/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-fun-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 06:37:59,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 06:37:59,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 06:38:00,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 06:38:00,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 06:38:00,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 06:38:00,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 06:38:00,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 06:38:00,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 06:38:00,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 06:38:00,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 06:38:00,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 06:38:00,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 06:38:00,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 06:38:00,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 06:38:00,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 06:38:00,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 06:38:00,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 06:38:00,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 06:38:00,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 06:38:00,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 06:38:00,075 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 06:38:00,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 06:38:00,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 06:38:00,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 06:38:00,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 06:38:00,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 06:38:00,076 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 06:38:00,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 06:38:00,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 06:38:00,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 06:38:00,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 06:38:00,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 06:38:00,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 06:38:00,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 06:38:00,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 06:38:00,077 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 06:38:00,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 06:38:00,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 06:38:00,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 06:38:00,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 06:38:00,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 06:38:00,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 06:38:00,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 06:38:00,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 06:38:00,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 06:38:00,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 06:38:00,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 06:38:00,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 06:38:00,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 06:38:00,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 06:38:00,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 06:38:00,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 06:38:00,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 06:38:00,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 06:38:00,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 06:38:00,381 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 06:38:00,382 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 06:38:00,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-fun-alt.wvr.bpl [2021-06-05 06:38:00,383 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-fun-alt.wvr.bpl' [2021-06-05 06:38:00,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 06:38:00,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 06:38:00,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 06:38:00,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 06:38:00,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 06:38:00,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 06:38:00,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 06:38:00,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 06:38:00,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 06:38:00,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 06:38:00,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 06:38:00,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 06:38:00,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 06:38:00,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 06:38:00,764 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 06:38:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 06:38:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 06:38:00,764 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 06:38:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 06:38:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 06:38:00,765 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 06:38:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 06:38:00,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 06:38:00,765 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 06:38:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 06:38:00,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 06:38:00,766 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 06:38:00,912 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 06:38:00,912 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 06:38:00,914 INFO L202 PluginConnector]: Adding new model max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:38:00 BoogieIcfgContainer [2021-06-05 06:38:00,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 06:38:00,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 06:38:00,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 06:38:00,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 06:38:00,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/2) ... [2021-06-05 06:38:00,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117917ac and model type max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 06:38:00, skipping insertion in model container [2021-06-05 06:38:00,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:38:00" (2/2) ... [2021-06-05 06:38:00,919 INFO L111 eAbstractionObserver]: Analyzing ICFG max-fun-alt.wvr.bpl [2021-06-05 06:38:00,922 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 06:38:00,923 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 06:38:00,923 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 06:38:00,923 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 06:38:00,966 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 06:38:00,980 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 06:38:00,998 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 06:38:00,999 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 06:38:00,999 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 06:38:00,999 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 06:38:00,999 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 06:38:00,999 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 06:38:00,999 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 06:38:00,999 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 06:38:01,005 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-06-05 06:38:01,020 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 06:38:01,028 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:01,028 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:01,028 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:01,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1272469491, now seen corresponding path program 1 times [2021-06-05 06:38:01,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:01,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451925580] [2021-06-05 06:38:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:01,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:01,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451925580] [2021-06-05 06:38:01,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451925580] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:38:01,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:38:01,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 06:38:01,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422813161] [2021-06-05 06:38:01,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 06:38:01,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:01,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 06:38:01,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 06:38:01,211 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:01,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:01,253 INFO L93 Difference]: Finished difference Result 217 states and 617 transitions. [2021-06-05 06:38:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 06:38:01,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 06:38:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:01,266 INFO L225 Difference]: With dead ends: 217 [2021-06-05 06:38:01,266 INFO L226 Difference]: Without dead ends: 202 [2021-06-05 06:38:01,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 06:38:01,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-06-05 06:38:01,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2021-06-05 06:38:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.831081081081081) internal successors, (419), 148 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions. [2021-06-05 06:38:01,316 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18 [2021-06-05 06:38:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:01,317 INFO L482 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions. [2021-06-05 06:38:01,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions. [2021-06-05 06:38:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 06:38:01,321 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:01,321 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:01,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 06:38:01,324 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:01,325 INFO L82 PathProgramCache]: Analyzing trace with hash -411683507, now seen corresponding path program 1 times [2021-06-05 06:38:01,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:01,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850215761] [2021-06-05 06:38:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:38:01,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:01,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850215761] [2021-06-05 06:38:01,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850215761] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:38:01,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:38:01,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 06:38:01,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815324481] [2021-06-05 06:38:01,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 06:38:01,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:01,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 06:38:01,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 06:38:01,368 INFO L87 Difference]: Start difference. First operand 149 states and 419 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:01,397 INFO L93 Difference]: Finished difference Result 158 states and 445 transitions. [2021-06-05 06:38:01,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 06:38:01,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 06:38:01,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:01,398 INFO L225 Difference]: With dead ends: 158 [2021-06-05 06:38:01,398 INFO L226 Difference]: Without dead ends: 158 [2021-06-05 06:38:01,399 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 06:38:01,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-06-05 06:38:01,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2021-06-05 06:38:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.8333333333333335) internal successors, (374), 132 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions. [2021-06-05 06:38:01,407 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20 [2021-06-05 06:38:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:01,408 INFO L482 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions. [2021-06-05 06:38:01,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions. [2021-06-05 06:38:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 06:38:01,409 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:01,409 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:01,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 06:38:01,409 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:01,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:01,410 INFO L82 PathProgramCache]: Analyzing trace with hash 296923691, now seen corresponding path program 1 times [2021-06-05 06:38:01,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:01,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681740876] [2021-06-05 06:38:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:38:01,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:01,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681740876] [2021-06-05 06:38:01,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681740876] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:38:01,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:38:01,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 06:38:01,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255038072] [2021-06-05 06:38:01,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 06:38:01,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:01,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 06:38:01,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 06:38:01,445 INFO L87 Difference]: Start difference. First operand 133 states and 374 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:01,487 INFO L93 Difference]: Finished difference Result 183 states and 522 transitions. [2021-06-05 06:38:01,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 06:38:01,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 06:38:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:01,489 INFO L225 Difference]: With dead ends: 183 [2021-06-05 06:38:01,489 INFO L226 Difference]: Without dead ends: 183 [2021-06-05 06:38:01,489 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 06:38:01,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-06-05 06:38:01,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158. [2021-06-05 06:38:01,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.8535031847133756) internal successors, (448), 157 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions. [2021-06-05 06:38:01,498 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20 [2021-06-05 06:38:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:01,498 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions. [2021-06-05 06:38:01,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions. [2021-06-05 06:38:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:38:01,500 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:01,500 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:01,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 06:38:01,500 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:01,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:01,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1416433813, now seen corresponding path program 1 times [2021-06-05 06:38:01,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:01,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296014912] [2021-06-05 06:38:01,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:01,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:01,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296014912] [2021-06-05 06:38:01,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296014912] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:01,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346242168] [2021-06-05 06:38:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:01,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 06:38:01,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:02,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:38:02,042 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:02,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:38:02,045 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:02,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:02,049 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:02,059 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:02,061 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:38:02,061 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:91, output treesize:15 [2021-06-05 06:38:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:02,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346242168] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:02,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:02,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:02,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390697064] [2021-06-05 06:38:02,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:02,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:02,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:02,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:02,094 INFO L87 Difference]: Start difference. First operand 158 states and 448 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:02,312 INFO L93 Difference]: Finished difference Result 330 states and 935 transitions. [2021-06-05 06:38:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 06:38:02,312 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 06:38:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:02,314 INFO L225 Difference]: With dead ends: 330 [2021-06-05 06:38:02,314 INFO L226 Difference]: Without dead ends: 315 [2021-06-05 06:38:02,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 317.5ms TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:38:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-06-05 06:38:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224. [2021-06-05 06:38:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.8699551569506725) internal successors, (640), 223 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions. [2021-06-05 06:38:02,324 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22 [2021-06-05 06:38:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:02,325 INFO L482 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions. [2021-06-05 06:38:02,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:02,325 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions. [2021-06-05 06:38:02,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:38:02,326 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:02,326 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:02,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:02,541 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:02,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:02,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1584242905, now seen corresponding path program 2 times [2021-06-05 06:38:02,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:02,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319145711] [2021-06-05 06:38:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:02,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:02,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319145711] [2021-06-05 06:38:02,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319145711] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:02,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523088114] [2021-06-05 06:38:02,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:02,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:02,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:02,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 06:38:02,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:03,041 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:03,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-06-05 06:38:03,047 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:03,057 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:03,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 06:38:03,059 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:03,069 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:03,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 06:38:03,071 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:03,078 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:03,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:38:03,080 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:03,119 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:03,150 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:38:03,150 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:124, output treesize:114 [2021-06-05 06:38:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:03,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523088114] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:03,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:03,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-06-05 06:38:03,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125364874] [2021-06-05 06:38:03,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:38:03,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:03,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:38:03,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:38:03,289 INFO L87 Difference]: Start difference. First operand 224 states and 640 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:03,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:03,865 INFO L93 Difference]: Finished difference Result 406 states and 1173 transitions. [2021-06-05 06:38:03,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 06:38:03,866 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 06:38:03,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:03,868 INFO L225 Difference]: With dead ends: 406 [2021-06-05 06:38:03,868 INFO L226 Difference]: Without dead ends: 391 [2021-06-05 06:38:03,868 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 679.6ms TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:38:03,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-06-05 06:38:03,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 229. [2021-06-05 06:38:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.912280701754386) internal successors, (664), 228 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:03,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions. [2021-06-05 06:38:03,878 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22 [2021-06-05 06:38:03,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:03,878 INFO L482 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions. [2021-06-05 06:38:03,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:03,878 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions. [2021-06-05 06:38:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:38:03,880 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:03,880 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:04,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:04,091 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:04,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:04,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1285469457, now seen corresponding path program 3 times [2021-06-05 06:38:04,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:04,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938578501] [2021-06-05 06:38:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:04,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:04,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938578501] [2021-06-05 06:38:04,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938578501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:04,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072440710] [2021-06-05 06:38:04,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:04,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 06:38:04,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:04,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 06:38:04,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:04,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:38:04,365 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:04,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:04,368 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:04,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:38:04,370 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:04,376 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:04,377 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:38:04,377 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:67, output treesize:15 [2021-06-05 06:38:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:04,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072440710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:04,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:04,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-05 06:38:04,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752018456] [2021-06-05 06:38:04,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:04,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:04,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:04,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:04,407 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:04,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:04,555 INFO L93 Difference]: Finished difference Result 363 states and 1038 transitions. [2021-06-05 06:38:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 06:38:04,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 06:38:04,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:04,557 INFO L225 Difference]: With dead ends: 363 [2021-06-05 06:38:04,557 INFO L226 Difference]: Without dead ends: 348 [2021-06-05 06:38:04,559 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 200.7ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:38:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-06-05 06:38:04,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 241. [2021-06-05 06:38:04,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.8916666666666666) internal successors, (694), 240 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:04,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions. [2021-06-05 06:38:04,568 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22 [2021-06-05 06:38:04,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:04,568 INFO L482 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions. [2021-06-05 06:38:04,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:04,569 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions. [2021-06-05 06:38:04,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:38:04,573 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:04,573 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:04,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:04,789 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:04,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:04,789 INFO L82 PathProgramCache]: Analyzing trace with hash 285356143, now seen corresponding path program 4 times [2021-06-05 06:38:04,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:04,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927519878] [2021-06-05 06:38:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:04,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:04,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927519878] [2021-06-05 06:38:04,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927519878] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:04,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422929283] [2021-06-05 06:38:04,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:04,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:04,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:04,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 06:38:04,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:05,106 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:05,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 06:38:05,109 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,118 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:05,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:38:05,120 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,159 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:05,167 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:05,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 06:38:05,170 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,176 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:05,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-06-05 06:38:05,182 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,217 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:05,222 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:38:05,222 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:121, output treesize:71 [2021-06-05 06:38:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:05,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422929283] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:05,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:05,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:05,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629339551] [2021-06-05 06:38:05,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:05,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:05,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:05,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:05,304 INFO L87 Difference]: Start difference. First operand 241 states and 694 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:05,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:05,596 INFO L93 Difference]: Finished difference Result 425 states and 1233 transitions. [2021-06-05 06:38:05,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 06:38:05,597 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 06:38:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:05,599 INFO L225 Difference]: With dead ends: 425 [2021-06-05 06:38:05,599 INFO L226 Difference]: Without dead ends: 410 [2021-06-05 06:38:05,599 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 330.9ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:38:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-06-05 06:38:05,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 247. [2021-06-05 06:38:05,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9186991869918697) internal successors, (718), 246 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:05,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions. [2021-06-05 06:38:05,610 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22 [2021-06-05 06:38:05,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:05,611 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions. [2021-06-05 06:38:05,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:05,612 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions. [2021-06-05 06:38:05,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:05,612 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:05,612 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:05,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:05,831 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:05,832 INFO L82 PathProgramCache]: Analyzing trace with hash -703639479, now seen corresponding path program 5 times [2021-06-05 06:38:05,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:05,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555452907] [2021-06-05 06:38:05,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:05,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:05,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555452907] [2021-06-05 06:38:05,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555452907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:05,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783033860] [2021-06-05 06:38:05,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:05,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:05,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:05,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:05,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:05,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783033860] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:05,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:05,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:05,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467194696] [2021-06-05 06:38:05,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:05,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:05,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:05,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:05,986 INFO L87 Difference]: Start difference. First operand 247 states and 718 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:06,348 INFO L93 Difference]: Finished difference Result 619 states and 1783 transitions. [2021-06-05 06:38:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:38:06,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:06,350 INFO L225 Difference]: With dead ends: 619 [2021-06-05 06:38:06,350 INFO L226 Difference]: Without dead ends: 619 [2021-06-05 06:38:06,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 224.7ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:38:06,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-06-05 06:38:06,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 297. [2021-06-05 06:38:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 3.050675675675676) internal successors, (903), 296 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 903 transitions. [2021-06-05 06:38:06,358 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 903 transitions. Word has length 24 [2021-06-05 06:38:06,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:06,358 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 903 transitions. [2021-06-05 06:38:06,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:06,358 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 903 transitions. [2021-06-05 06:38:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:06,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:06,359 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:06,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:06,564 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:06,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:06,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1679958323, now seen corresponding path program 6 times [2021-06-05 06:38:06,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:06,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218858825] [2021-06-05 06:38:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:06,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:06,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218858825] [2021-06-05 06:38:06,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218858825] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:06,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735429382] [2021-06-05 06:38:06,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:06,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:06,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:06,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:06,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:06,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735429382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:06,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:06,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:06,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124571729] [2021-06-05 06:38:06,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:06,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:06,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:06,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:06,723 INFO L87 Difference]: Start difference. First operand 297 states and 903 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:07,393 INFO L93 Difference]: Finished difference Result 1078 states and 2992 transitions. [2021-06-05 06:38:07,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:38:07,394 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:07,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:07,397 INFO L225 Difference]: With dead ends: 1078 [2021-06-05 06:38:07,397 INFO L226 Difference]: Without dead ends: 1078 [2021-06-05 06:38:07,398 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 429.5ms TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:38:07,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-06-05 06:38:07,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 302. [2021-06-05 06:38:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.083056478405316) internal successors, (928), 301 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 928 transitions. [2021-06-05 06:38:07,408 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 928 transitions. Word has length 24 [2021-06-05 06:38:07,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:07,408 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 928 transitions. [2021-06-05 06:38:07,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:07,408 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 928 transitions. [2021-06-05 06:38:07,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:07,409 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:07,409 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:07,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:07,625 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1113006243, now seen corresponding path program 7 times [2021-06-05 06:38:07,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:07,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932397071] [2021-06-05 06:38:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:07,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:07,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932397071] [2021-06-05 06:38:07,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932397071] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:07,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135306411] [2021-06-05 06:38:07,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:07,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:07,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:07,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135306411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:07,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:07,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:07,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977566969] [2021-06-05 06:38:07,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:07,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:07,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:07,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:07,785 INFO L87 Difference]: Start difference. First operand 302 states and 928 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:08,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:08,360 INFO L93 Difference]: Finished difference Result 951 states and 2692 transitions. [2021-06-05 06:38:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:38:08,361 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:08,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:08,364 INFO L225 Difference]: With dead ends: 951 [2021-06-05 06:38:08,364 INFO L226 Difference]: Without dead ends: 951 [2021-06-05 06:38:08,365 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 367.5ms TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:38:08,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-06-05 06:38:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 293. [2021-06-05 06:38:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 3.0616438356164384) internal successors, (894), 292 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 894 transitions. [2021-06-05 06:38:08,373 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 894 transitions. Word has length 24 [2021-06-05 06:38:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:08,373 INFO L482 AbstractCegarLoop]: Abstraction has 293 states and 894 transitions. [2021-06-05 06:38:08,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 894 transitions. [2021-06-05 06:38:08,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:08,374 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:08,374 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:08,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:08,587 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:08,587 INFO L82 PathProgramCache]: Analyzing trace with hash -176867571, now seen corresponding path program 1 times [2021-06-05 06:38:08,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:08,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785374047] [2021-06-05 06:38:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:38:08,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:08,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785374047] [2021-06-05 06:38:08,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785374047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:08,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511674181] [2021-06-05 06:38:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:08,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:38:08,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:08,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:38:08,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511674181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:08,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:08,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:38:08,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960293369] [2021-06-05 06:38:08,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:38:08,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:08,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:38:08,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:38:08,699 INFO L87 Difference]: Start difference. First operand 293 states and 894 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:08,787 INFO L93 Difference]: Finished difference Result 669 states and 1943 transitions. [2021-06-05 06:38:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 06:38:08,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:08,792 INFO L225 Difference]: With dead ends: 669 [2021-06-05 06:38:08,792 INFO L226 Difference]: Without dead ends: 663 [2021-06-05 06:38:08,793 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-06-05 06:38:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 413. [2021-06-05 06:38:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 3.1699029126213594) internal successors, (1306), 412 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1306 transitions. [2021-06-05 06:38:08,801 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1306 transitions. Word has length 24 [2021-06-05 06:38:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:08,802 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1306 transitions. [2021-06-05 06:38:08,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1306 transitions. [2021-06-05 06:38:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:08,803 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:08,803 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:09,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-06-05 06:38:09,009 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:09,009 INFO L82 PathProgramCache]: Analyzing trace with hash -613836279, now seen corresponding path program 8 times [2021-06-05 06:38:09,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:09,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491955076] [2021-06-05 06:38:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:09,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:09,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491955076] [2021-06-05 06:38:09,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491955076] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:09,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942139887] [2021-06-05 06:38:09,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:09,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:09,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:09,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:09,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:09,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942139887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:09,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:09,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:38:09,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371448040] [2021-06-05 06:38:09,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:09,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:09,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:09,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:09,179 INFO L87 Difference]: Start difference. First operand 413 states and 1306 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:09,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:09,307 INFO L93 Difference]: Finished difference Result 710 states and 2124 transitions. [2021-06-05 06:38:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:38:09,308 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:09,310 INFO L225 Difference]: With dead ends: 710 [2021-06-05 06:38:09,310 INFO L226 Difference]: Without dead ends: 672 [2021-06-05 06:38:09,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 137.3ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:38:09,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-06-05 06:38:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515. [2021-06-05 06:38:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 3.17704280155642) internal successors, (1633), 514 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1633 transitions. [2021-06-05 06:38:09,319 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1633 transitions. Word has length 24 [2021-06-05 06:38:09,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:09,319 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1633 transitions. [2021-06-05 06:38:09,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:09,320 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1633 transitions. [2021-06-05 06:38:09,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:09,320 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:09,321 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:09,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:09,541 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:09,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:09,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1319793611, now seen corresponding path program 2 times [2021-06-05 06:38:09,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:09,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216016788] [2021-06-05 06:38:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:38:09,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:09,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216016788] [2021-06-05 06:38:09,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216016788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:09,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523410143] [2021-06-05 06:38:09,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:09,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:09,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:09,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:38:09,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:38:09,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523410143] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:09,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:09,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:38:09,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823065115] [2021-06-05 06:38:09,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:38:09,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:09,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:38:09,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:38:09,628 INFO L87 Difference]: Start difference. First operand 515 states and 1633 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:09,726 INFO L93 Difference]: Finished difference Result 830 states and 2453 transitions. [2021-06-05 06:38:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 06:38:09,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:09,731 INFO L225 Difference]: With dead ends: 830 [2021-06-05 06:38:09,731 INFO L226 Difference]: Without dead ends: 830 [2021-06-05 06:38:09,731 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 53.1ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:09,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-06-05 06:38:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 530. [2021-06-05 06:38:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.153119092627599) internal successors, (1668), 529 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1668 transitions. [2021-06-05 06:38:09,741 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1668 transitions. Word has length 24 [2021-06-05 06:38:09,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:09,741 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1668 transitions. [2021-06-05 06:38:09,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:09,741 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1668 transitions. [2021-06-05 06:38:09,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:09,742 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:09,742 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:09,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:09,958 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:09,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:09,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1628492119, now seen corresponding path program 9 times [2021-06-05 06:38:09,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:09,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373816636] [2021-06-05 06:38:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:09,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:09,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373816636] [2021-06-05 06:38:09,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373816636] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:09,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008109536] [2021-06-05 06:38:09,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:10,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:10,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:10,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:10,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:10,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008109536] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:10,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:10,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:10,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133720165] [2021-06-05 06:38:10,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:10,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:10,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:10,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:10,075 INFO L87 Difference]: Start difference. First operand 530 states and 1668 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:10,312 INFO L93 Difference]: Finished difference Result 1196 states and 3492 transitions. [2021-06-05 06:38:10,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:38:10,313 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:10,318 INFO L225 Difference]: With dead ends: 1196 [2021-06-05 06:38:10,318 INFO L226 Difference]: Without dead ends: 1196 [2021-06-05 06:38:10,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 147.6ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:38:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-06-05 06:38:10,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 542. [2021-06-05 06:38:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.1497227356746764) internal successors, (1704), 541 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1704 transitions. [2021-06-05 06:38:10,339 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1704 transitions. Word has length 24 [2021-06-05 06:38:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:10,339 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1704 transitions. [2021-06-05 06:38:10,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1704 transitions. [2021-06-05 06:38:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:10,340 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:10,340 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:10,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-06-05 06:38:10,558 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:10,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:10,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1881561083, now seen corresponding path program 10 times [2021-06-05 06:38:10,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:10,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029978990] [2021-06-05 06:38:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:10,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:10,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029978990] [2021-06-05 06:38:10,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029978990] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:10,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389826540] [2021-06-05 06:38:10,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:10,614 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:10,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:10,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:10,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:10,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389826540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:10,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:10,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:10,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980829572] [2021-06-05 06:38:10,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:10,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:10,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:10,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:10,685 INFO L87 Difference]: Start difference. First operand 542 states and 1704 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:11,056 INFO L93 Difference]: Finished difference Result 1492 states and 4245 transitions. [2021-06-05 06:38:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:38:11,057 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:11,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:11,062 INFO L225 Difference]: With dead ends: 1492 [2021-06-05 06:38:11,062 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 06:38:11,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 220.9ms TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:38:11,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 06:38:11,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 586. [2021-06-05 06:38:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.1555555555555554) internal successors, (1846), 585 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1846 transitions. [2021-06-05 06:38:11,076 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1846 transitions. Word has length 24 [2021-06-05 06:38:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:11,077 INFO L482 AbstractCegarLoop]: Abstraction has 586 states and 1846 transitions. [2021-06-05 06:38:11,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1846 transitions. [2021-06-05 06:38:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:11,078 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:11,078 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:11,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-06-05 06:38:11,293 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:11,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:11,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1330383557, now seen corresponding path program 11 times [2021-06-05 06:38:11,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:11,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400397203] [2021-06-05 06:38:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:11,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:11,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400397203] [2021-06-05 06:38:11,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400397203] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:11,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103804443] [2021-06-05 06:38:11,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:11,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:11,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:11,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:11,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:11,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103804443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:11,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:11,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:38:11,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22860427] [2021-06-05 06:38:11,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:11,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:11,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:11,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:11,425 INFO L87 Difference]: Start difference. First operand 586 states and 1846 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:11,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:11,662 INFO L93 Difference]: Finished difference Result 1258 states and 3765 transitions. [2021-06-05 06:38:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:38:11,662 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:11,666 INFO L225 Difference]: With dead ends: 1258 [2021-06-05 06:38:11,667 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 06:38:11,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 153.0ms TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:38:11,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 06:38:11,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 758. [2021-06-05 06:38:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 3.224570673712021) internal successors, (2441), 757 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2441 transitions. [2021-06-05 06:38:11,681 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2441 transitions. Word has length 24 [2021-06-05 06:38:11,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:11,681 INFO L482 AbstractCegarLoop]: Abstraction has 758 states and 2441 transitions. [2021-06-05 06:38:11,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:11,681 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2441 transitions. [2021-06-05 06:38:11,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:11,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:11,682 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:11,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-05 06:38:11,897 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:11,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:11,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1493505621, now seen corresponding path program 12 times [2021-06-05 06:38:11,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:11,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080191006] [2021-06-05 06:38:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:11,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:11,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080191006] [2021-06-05 06:38:11,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080191006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:11,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115654821] [2021-06-05 06:38:11,929 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:11,955 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:11,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:11,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:11,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:12,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115654821] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:12,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:12,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:38:12,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158785789] [2021-06-05 06:38:12,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:12,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:12,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:12,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:12,017 INFO L87 Difference]: Start difference. First operand 758 states and 2441 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:12,259 INFO L93 Difference]: Finished difference Result 1329 states and 4025 transitions. [2021-06-05 06:38:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:38:12,259 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:12,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:12,263 INFO L225 Difference]: With dead ends: 1329 [2021-06-05 06:38:12,263 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 06:38:12,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:38:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 06:38:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 764. [2021-06-05 06:38:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 3.220183486238532) internal successors, (2457), 763 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2457 transitions. [2021-06-05 06:38:12,277 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2457 transitions. Word has length 24 [2021-06-05 06:38:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:12,277 INFO L482 AbstractCegarLoop]: Abstraction has 764 states and 2457 transitions. [2021-06-05 06:38:12,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2457 transitions. [2021-06-05 06:38:12,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:12,279 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:12,279 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:12,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:12,502 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:12,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1926382225, now seen corresponding path program 13 times [2021-06-05 06:38:12,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:12,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104045018] [2021-06-05 06:38:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:12,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:12,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104045018] [2021-06-05 06:38:12,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104045018] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:12,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273723147] [2021-06-05 06:38:12,541 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 06:38:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:12,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:12,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:12,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273723147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:12,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:12,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:12,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645578846] [2021-06-05 06:38:12,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:12,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:12,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:12,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:12,631 INFO L87 Difference]: Start difference. First operand 764 states and 2457 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:12,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:12,945 INFO L93 Difference]: Finished difference Result 1548 states and 4638 transitions. [2021-06-05 06:38:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:38:12,946 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:12,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:12,950 INFO L225 Difference]: With dead ends: 1548 [2021-06-05 06:38:12,950 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 06:38:12,951 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 201.2ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:38:12,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 06:38:12,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 772. [2021-06-05 06:38:12,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 3.204928664072633) internal successors, (2471), 771 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2471 transitions. [2021-06-05 06:38:12,966 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2471 transitions. Word has length 24 [2021-06-05 06:38:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:12,966 INFO L482 AbstractCegarLoop]: Abstraction has 772 states and 2471 transitions. [2021-06-05 06:38:12,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2471 transitions. [2021-06-05 06:38:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:12,968 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:12,968 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:13,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:13,181 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:13,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:13,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2096575881, now seen corresponding path program 14 times [2021-06-05 06:38:13,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:13,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710996622] [2021-06-05 06:38:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:13,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:13,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710996622] [2021-06-05 06:38:13,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710996622] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:13,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534787758] [2021-06-05 06:38:13,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:13,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:13,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:13,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:13,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:13,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534787758] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:13,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:13,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:13,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110692149] [2021-06-05 06:38:13,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:13,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:13,320 INFO L87 Difference]: Start difference. First operand 772 states and 2471 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:14,026 INFO L93 Difference]: Finished difference Result 2734 states and 8136 transitions. [2021-06-05 06:38:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:38:14,026 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:14,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:14,035 INFO L225 Difference]: With dead ends: 2734 [2021-06-05 06:38:14,035 INFO L226 Difference]: Without dead ends: 2734 [2021-06-05 06:38:14,035 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 402.3ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:38:14,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-06-05 06:38:14,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 841. [2021-06-05 06:38:14,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 3.3107142857142855) internal successors, (2781), 840 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2781 transitions. [2021-06-05 06:38:14,059 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2781 transitions. Word has length 24 [2021-06-05 06:38:14,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:14,059 INFO L482 AbstractCegarLoop]: Abstraction has 841 states and 2781 transitions. [2021-06-05 06:38:14,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2781 transitions. [2021-06-05 06:38:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:14,061 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:14,061 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:14,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:14,273 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:14,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:14,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1631439335, now seen corresponding path program 15 times [2021-06-05 06:38:14,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:14,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343463438] [2021-06-05 06:38:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:14,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:14,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343463438] [2021-06-05 06:38:14,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343463438] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:14,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683873837] [2021-06-05 06:38:14,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:14,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:14,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:14,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:14,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:14,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683873837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:14,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:14,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:14,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673809848] [2021-06-05 06:38:14,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:14,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:14,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:14,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:14,422 INFO L87 Difference]: Start difference. First operand 841 states and 2781 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:15,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:15,034 INFO L93 Difference]: Finished difference Result 2693 states and 8043 transitions. [2021-06-05 06:38:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:38:15,034 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:15,043 INFO L225 Difference]: With dead ends: 2693 [2021-06-05 06:38:15,043 INFO L226 Difference]: Without dead ends: 2693 [2021-06-05 06:38:15,044 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 389.8ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:38:15,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-05 06:38:15,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 831. [2021-06-05 06:38:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 3.289156626506024) internal successors, (2730), 830 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:15,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2730 transitions. [2021-06-05 06:38:15,066 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2730 transitions. Word has length 24 [2021-06-05 06:38:15,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:15,066 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2730 transitions. [2021-06-05 06:38:15,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:15,066 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2730 transitions. [2021-06-05 06:38:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:15,068 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:15,068 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:15,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:15,281 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:15,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:15,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1491182103, now seen corresponding path program 16 times [2021-06-05 06:38:15,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:15,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106693256] [2021-06-05 06:38:15,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:15,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:15,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106693256] [2021-06-05 06:38:15,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106693256] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:15,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633223453] [2021-06-05 06:38:15,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:15,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:15,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:15,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:15,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:15,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633223453] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:15,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:15,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:15,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280953059] [2021-06-05 06:38:15,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:15,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:15,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:15,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:15,439 INFO L87 Difference]: Start difference. First operand 831 states and 2730 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:16,013 INFO L93 Difference]: Finished difference Result 2677 states and 7780 transitions. [2021-06-05 06:38:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:38:16,013 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:16,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:16,018 INFO L225 Difference]: With dead ends: 2677 [2021-06-05 06:38:16,018 INFO L226 Difference]: Without dead ends: 2677 [2021-06-05 06:38:16,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 351.4ms TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:38:16,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-06-05 06:38:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 845. [2021-06-05 06:38:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2997630331753554) internal successors, (2785), 844 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2785 transitions. [2021-06-05 06:38:16,041 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2785 transitions. Word has length 24 [2021-06-05 06:38:16,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:16,042 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2785 transitions. [2021-06-05 06:38:16,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2785 transitions. [2021-06-05 06:38:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:16,043 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:16,043 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:16,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-06-05 06:38:16,257 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:16,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1572558191, now seen corresponding path program 17 times [2021-06-05 06:38:16,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:16,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736593277] [2021-06-05 06:38:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:16,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:16,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736593277] [2021-06-05 06:38:16,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736593277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:16,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232941768] [2021-06-05 06:38:16,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:16,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:38:16,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:16,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:16,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:16,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232941768] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:16,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:16,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:16,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50718427] [2021-06-05 06:38:16,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:16,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:16,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:16,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:16,378 INFO L87 Difference]: Start difference. First operand 845 states and 2785 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:16,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:16,899 INFO L93 Difference]: Finished difference Result 2474 states and 7308 transitions. [2021-06-05 06:38:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:38:16,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:16,909 INFO L225 Difference]: With dead ends: 2474 [2021-06-05 06:38:16,909 INFO L226 Difference]: Without dead ends: 2470 [2021-06-05 06:38:16,910 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 301.9ms TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:38:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-05 06:38:16,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 845. [2021-06-05 06:38:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2973933649289098) internal successors, (2783), 844 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2783 transitions. [2021-06-05 06:38:16,930 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2783 transitions. Word has length 24 [2021-06-05 06:38:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:16,930 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2783 transitions. [2021-06-05 06:38:16,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2783 transitions. [2021-06-05 06:38:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:16,931 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:16,931 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:17,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:17,145 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:17,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1791751889, now seen corresponding path program 18 times [2021-06-05 06:38:17,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:17,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662636726] [2021-06-05 06:38:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:17,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:17,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662636726] [2021-06-05 06:38:17,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662636726] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:17,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719646271] [2021-06-05 06:38:17,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:17,210 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:38:17,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:17,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:17,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:17,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719646271] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:17,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:17,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:17,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041627200] [2021-06-05 06:38:17,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:17,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:17,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:17,278 INFO L87 Difference]: Start difference. First operand 845 states and 2783 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:17,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:17,819 INFO L93 Difference]: Finished difference Result 2514 states and 7408 transitions. [2021-06-05 06:38:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:38:17,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:17,824 INFO L225 Difference]: With dead ends: 2514 [2021-06-05 06:38:17,824 INFO L226 Difference]: Without dead ends: 2514 [2021-06-05 06:38:17,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 324.5ms TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:38:17,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-06-05 06:38:17,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 853. [2021-06-05 06:38:17,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.3039906103286385) internal successors, (2815), 852 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2815 transitions. [2021-06-05 06:38:17,848 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2815 transitions. Word has length 24 [2021-06-05 06:38:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:17,848 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2815 transitions. [2021-06-05 06:38:17,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2815 transitions. [2021-06-05 06:38:17,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:17,849 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:17,850 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:18,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-06-05 06:38:18,065 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:18,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:18,065 INFO L82 PathProgramCache]: Analyzing trace with hash -148712735, now seen corresponding path program 19 times [2021-06-05 06:38:18,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:18,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601854439] [2021-06-05 06:38:18,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:18,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:18,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601854439] [2021-06-05 06:38:18,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601854439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:18,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029302262] [2021-06-05 06:38:18,096 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:18,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:18,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:18,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029302262] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:18,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:18,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:18,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593495737] [2021-06-05 06:38:18,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:18,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:18,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:18,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:18,178 INFO L87 Difference]: Start difference. First operand 853 states and 2815 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:18,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:18,708 INFO L93 Difference]: Finished difference Result 2332 states and 6984 transitions. [2021-06-05 06:38:18,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:38:18,708 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:18,712 INFO L225 Difference]: With dead ends: 2332 [2021-06-05 06:38:18,712 INFO L226 Difference]: Without dead ends: 2328 [2021-06-05 06:38:18,712 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 322.2ms TimeCoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:38:18,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-06-05 06:38:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 853. [2021-06-05 06:38:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.301643192488263) internal successors, (2813), 852 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2813 transitions. [2021-06-05 06:38:18,731 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2813 transitions. Word has length 24 [2021-06-05 06:38:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:18,732 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2813 transitions. [2021-06-05 06:38:18,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2813 transitions. [2021-06-05 06:38:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:18,733 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:18,733 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:18,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-06-05 06:38:18,949 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:18,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:18,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1060998287, now seen corresponding path program 3 times [2021-06-05 06:38:18,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:18,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433945864] [2021-06-05 06:38:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:38:18,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:18,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433945864] [2021-06-05 06:38:18,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433945864] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:18,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121922899] [2021-06-05 06:38:18,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:19,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 06:38:19,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:19,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:38:19,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:19,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:38:19,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121922899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:19,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:19,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:38:19,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660042191] [2021-06-05 06:38:19,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:38:19,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:19,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:38:19,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:38:19,046 INFO L87 Difference]: Start difference. First operand 853 states and 2813 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:19,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:19,119 INFO L93 Difference]: Finished difference Result 929 states and 3034 transitions. [2021-06-05 06:38:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 06:38:19,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:19,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:19,121 INFO L225 Difference]: With dead ends: 929 [2021-06-05 06:38:19,121 INFO L226 Difference]: Without dead ends: 929 [2021-06-05 06:38:19,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:19,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-06-05 06:38:19,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 780. [2021-06-05 06:38:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 3.3029525032092426) internal successors, (2573), 779 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2573 transitions. [2021-06-05 06:38:19,138 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2573 transitions. Word has length 24 [2021-06-05 06:38:19,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:19,138 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 2573 transitions. [2021-06-05 06:38:19,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:19,138 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2573 transitions. [2021-06-05 06:38:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:19,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:19,140 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:19,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:19,345 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:19,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:19,345 INFO L82 PathProgramCache]: Analyzing trace with hash -130798543, now seen corresponding path program 20 times [2021-06-05 06:38:19,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:19,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385158816] [2021-06-05 06:38:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:19,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:19,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385158816] [2021-06-05 06:38:19,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385158816] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:19,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279377667] [2021-06-05 06:38:19,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:19,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:19,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:19,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:19,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:19,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279377667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:19,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:19,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:38:19,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761941714] [2021-06-05 06:38:19,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:38:19,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:19,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:38:19,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:38:19,450 INFO L87 Difference]: Start difference. First operand 780 states and 2573 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:19,692 INFO L93 Difference]: Finished difference Result 1555 states and 4761 transitions. [2021-06-05 06:38:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:38:19,693 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:19,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:19,695 INFO L225 Difference]: With dead ends: 1555 [2021-06-05 06:38:19,695 INFO L226 Difference]: Without dead ends: 1555 [2021-06-05 06:38:19,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 144.0ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:38:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-06-05 06:38:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 842. [2021-06-05 06:38:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.296076099881094) internal successors, (2772), 841 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2772 transitions. [2021-06-05 06:38:19,709 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2772 transitions. Word has length 24 [2021-06-05 06:38:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:19,709 INFO L482 AbstractCegarLoop]: Abstraction has 842 states and 2772 transitions. [2021-06-05 06:38:19,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2772 transitions. [2021-06-05 06:38:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:19,710 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:19,710 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:19,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-06-05 06:38:19,925 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:19,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1771880909, now seen corresponding path program 21 times [2021-06-05 06:38:19,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:19,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376384266] [2021-06-05 06:38:19,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:19,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:19,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376384266] [2021-06-05 06:38:19,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376384266] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:19,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748388438] [2021-06-05 06:38:19,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:19,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:19,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:19,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:19,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:20,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748388438] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:20,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:20,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 06:38:20,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490259736] [2021-06-05 06:38:20,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 06:38:20,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:20,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 06:38:20,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 06:38:20,019 INFO L87 Difference]: Start difference. First operand 842 states and 2772 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:20,218 INFO L93 Difference]: Finished difference Result 1605 states and 4891 transitions. [2021-06-05 06:38:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:38:20,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:20,221 INFO L225 Difference]: With dead ends: 1605 [2021-06-05 06:38:20,221 INFO L226 Difference]: Without dead ends: 1605 [2021-06-05 06:38:20,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 117.5ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:38:20,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2021-06-05 06:38:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 896. [2021-06-05 06:38:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.2905027932960893) internal successors, (2945), 895 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2945 transitions. [2021-06-05 06:38:20,254 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2945 transitions. Word has length 24 [2021-06-05 06:38:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:20,255 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2945 transitions. [2021-06-05 06:38:20,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2945 transitions. [2021-06-05 06:38:20,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:20,256 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:20,256 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:20,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:20,472 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:20,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1727059767, now seen corresponding path program 22 times [2021-06-05 06:38:20,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:20,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183536317] [2021-06-05 06:38:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:38:20,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:20,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183536317] [2021-06-05 06:38:20,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183536317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:20,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882059276] [2021-06-05 06:38:20,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:20,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:20,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:20,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:20,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:38:20,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882059276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:20,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:20,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 06:38:20,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960228401] [2021-06-05 06:38:20,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 06:38:20,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:20,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 06:38:20,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 06:38:20,559 INFO L87 Difference]: Start difference. First operand 896 states and 2945 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:20,752 INFO L93 Difference]: Finished difference Result 1524 states and 4690 transitions. [2021-06-05 06:38:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:38:20,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:20,754 INFO L225 Difference]: With dead ends: 1524 [2021-06-05 06:38:20,754 INFO L226 Difference]: Without dead ends: 1520 [2021-06-05 06:38:20,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:38:20,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-05 06:38:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 896. [2021-06-05 06:38:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.288268156424581) internal successors, (2943), 895 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2943 transitions. [2021-06-05 06:38:20,767 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2943 transitions. Word has length 24 [2021-06-05 06:38:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:20,767 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2943 transitions. [2021-06-05 06:38:20,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2943 transitions. [2021-06-05 06:38:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:20,768 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:20,768 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:20,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-06-05 06:38:20,986 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:20,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:20,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1970570871, now seen corresponding path program 23 times [2021-06-05 06:38:20,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:20,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946281606] [2021-06-05 06:38:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:21,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:21,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946281606] [2021-06-05 06:38:21,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946281606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:21,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275293119] [2021-06-05 06:38:21,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:21,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:21,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:21,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:21,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:21,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275293119] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:21,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:21,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:38:21,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882906187] [2021-06-05 06:38:21,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:38:21,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:21,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:38:21,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:38:21,083 INFO L87 Difference]: Start difference. First operand 896 states and 2943 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:21,280 INFO L93 Difference]: Finished difference Result 1508 states and 4652 transitions. [2021-06-05 06:38:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:38:21,280 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:21,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:21,282 INFO L225 Difference]: With dead ends: 1508 [2021-06-05 06:38:21,282 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 06:38:21,282 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 111.8ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:38:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 06:38:21,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 904. [2021-06-05 06:38:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 3.276854928017719) internal successors, (2959), 903 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2959 transitions. [2021-06-05 06:38:21,295 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2959 transitions. Word has length 24 [2021-06-05 06:38:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:21,295 INFO L482 AbstractCegarLoop]: Abstraction has 904 states and 2959 transitions. [2021-06-05 06:38:21,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2959 transitions. [2021-06-05 06:38:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:21,297 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:21,297 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:21,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:21,512 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:21,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:21,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1797976141, now seen corresponding path program 24 times [2021-06-05 06:38:21,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:21,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86022950] [2021-06-05 06:38:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:21,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:21,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86022950] [2021-06-05 06:38:21,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86022950] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:21,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425634893] [2021-06-05 06:38:21,541 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:21,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:21,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:21,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:21,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:21,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425634893] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:21,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:21,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:21,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110002770] [2021-06-05 06:38:21,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:21,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:21,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:21,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:21,632 INFO L87 Difference]: Start difference. First operand 904 states and 2959 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:22,087 INFO L93 Difference]: Finished difference Result 2412 states and 7565 transitions. [2021-06-05 06:38:22,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:38:22,087 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:22,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:22,090 INFO L225 Difference]: With dead ends: 2412 [2021-06-05 06:38:22,090 INFO L226 Difference]: Without dead ends: 2412 [2021-06-05 06:38:22,090 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 303.5ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:38:22,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-06-05 06:38:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 960. [2021-06-05 06:38:22,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.367049009384776) internal successors, (3229), 959 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:22,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3229 transitions. [2021-06-05 06:38:22,107 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3229 transitions. Word has length 24 [2021-06-05 06:38:22,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:22,107 INFO L482 AbstractCegarLoop]: Abstraction has 960 states and 3229 transitions. [2021-06-05 06:38:22,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:22,107 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3229 transitions. [2021-06-05 06:38:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:22,110 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:22,110 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:22,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-06-05 06:38:22,325 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:22,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:22,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1930039075, now seen corresponding path program 25 times [2021-06-05 06:38:22,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:22,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391820822] [2021-06-05 06:38:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:22,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:22,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391820822] [2021-06-05 06:38:22,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391820822] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:22,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806929577] [2021-06-05 06:38:22,355 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:22,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:22,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:22,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806929577] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:22,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:22,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:22,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388224831] [2021-06-05 06:38:22,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:22,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:22,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:22,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:22,467 INFO L87 Difference]: Start difference. First operand 960 states and 3229 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:22,883 INFO L93 Difference]: Finished difference Result 2335 states and 7372 transitions. [2021-06-05 06:38:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:38:22,884 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:22,886 INFO L225 Difference]: With dead ends: 2335 [2021-06-05 06:38:22,886 INFO L226 Difference]: Without dead ends: 2335 [2021-06-05 06:38:22,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 274.4ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:38:22,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-06-05 06:38:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 957. [2021-06-05 06:38:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:38:22,903 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:38:22,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:22,903 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:38:22,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:22,903 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:38:22,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:22,904 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:22,904 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:23,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:23,110 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:23,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:23,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1192582363, now seen corresponding path program 26 times [2021-06-05 06:38:23,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:23,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977326852] [2021-06-05 06:38:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:23,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:23,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977326852] [2021-06-05 06:38:23,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977326852] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:23,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687778698] [2021-06-05 06:38:23,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:23,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:23,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:23,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:23,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:23,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687778698] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:23,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:23,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:23,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077309594] [2021-06-05 06:38:23,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:23,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:23,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:23,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:23,230 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:23,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:23,581 INFO L93 Difference]: Finished difference Result 2285 states and 7121 transitions. [2021-06-05 06:38:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:38:23,582 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:23,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:23,585 INFO L225 Difference]: With dead ends: 2285 [2021-06-05 06:38:23,585 INFO L226 Difference]: Without dead ends: 2285 [2021-06-05 06:38:23,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 218.6ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:38:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-06-05 06:38:23,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 963. [2021-06-05 06:38:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:23,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 06:38:23,613 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 06:38:23,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:23,613 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 06:38:23,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 06:38:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:23,614 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:23,614 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:23,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-06-05 06:38:23,815 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:23,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1273958451, now seen corresponding path program 27 times [2021-06-05 06:38:23,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:23,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505872482] [2021-06-05 06:38:23,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:23,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:23,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505872482] [2021-06-05 06:38:23,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505872482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:23,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180068965] [2021-06-05 06:38:23,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:23,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:23,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:23,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:23,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:23,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180068965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:23,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:23,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:23,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388335398] [2021-06-05 06:38:23,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:23,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:23,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:23,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:23,930 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:24,265 INFO L93 Difference]: Finished difference Result 2176 states and 6849 transitions. [2021-06-05 06:38:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:38:24,265 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:24,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:24,267 INFO L225 Difference]: With dead ends: 2176 [2021-06-05 06:38:24,267 INFO L226 Difference]: Without dead ends: 2172 [2021-06-05 06:38:24,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 209.7ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:38:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-06-05 06:38:24,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 957. [2021-06-05 06:38:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:38:24,285 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:38:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:24,285 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:38:24,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:38:24,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:24,286 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:24,286 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:24,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:24,502 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:24,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:24,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2090351629, now seen corresponding path program 28 times [2021-06-05 06:38:24,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:24,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503742562] [2021-06-05 06:38:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:24,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:24,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503742562] [2021-06-05 06:38:24,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503742562] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:24,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486131051] [2021-06-05 06:38:24,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:24,561 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:24,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:24,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:24,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:24,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486131051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:24,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:24,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:24,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025875561] [2021-06-05 06:38:24,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:24,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:24,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:24,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:24,622 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:24,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:24,926 INFO L93 Difference]: Finished difference Result 2199 states and 6893 transitions. [2021-06-05 06:38:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:38:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:24,929 INFO L225 Difference]: With dead ends: 2199 [2021-06-05 06:38:24,929 INFO L226 Difference]: Without dead ends: 2199 [2021-06-05 06:38:24,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 206.5ms TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:38:24,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-06-05 06:38:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 963. [2021-06-05 06:38:24,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:24,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 06:38:24,945 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 06:38:24,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:24,945 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 06:38:24,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:24,945 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 06:38:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:24,946 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:24,946 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:25,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-06-05 06:38:25,147 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:25,147 INFO L82 PathProgramCache]: Analyzing trace with hash -447312475, now seen corresponding path program 29 times [2021-06-05 06:38:25,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:25,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99564418] [2021-06-05 06:38:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:25,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:25,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99564418] [2021-06-05 06:38:25,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99564418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:25,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045588224] [2021-06-05 06:38:25,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:25,202 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:25,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:25,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:25,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:25,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045588224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:25,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:25,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:25,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770407221] [2021-06-05 06:38:25,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:25,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:25,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:25,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:25,261 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:25,591 INFO L93 Difference]: Finished difference Result 2156 states and 6791 transitions. [2021-06-05 06:38:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:38:25,592 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:25,594 INFO L225 Difference]: With dead ends: 2156 [2021-06-05 06:38:25,594 INFO L226 Difference]: Without dead ends: 2152 [2021-06-05 06:38:25,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 209.6ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:38:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-06-05 06:38:25,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 957. [2021-06-05 06:38:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:38:25,613 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:38:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:25,613 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:38:25,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:38:25,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:25,614 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:25,614 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:25,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-06-05 06:38:25,829 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:25,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:25,829 INFO L82 PathProgramCache]: Analyzing trace with hash 556115509, now seen corresponding path program 30 times [2021-06-05 06:38:25,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:25,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622370579] [2021-06-05 06:38:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:25,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:25,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622370579] [2021-06-05 06:38:25,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622370579] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:25,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244624411] [2021-06-05 06:38:25,857 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:25,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:25,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:25,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:25,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:25,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244624411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:25,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:25,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:25,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793255651] [2021-06-05 06:38:25,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:25,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:25,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:25,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:25,929 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:26,231 INFO L93 Difference]: Finished difference Result 2097 states and 6377 transitions. [2021-06-05 06:38:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:38:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:26,234 INFO L225 Difference]: With dead ends: 2097 [2021-06-05 06:38:26,234 INFO L226 Difference]: Without dead ends: 2097 [2021-06-05 06:38:26,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 178.5ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:38:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-06-05 06:38:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1047. [2021-06-05 06:38:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.378585086042065) internal successors, (3534), 1046 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3534 transitions. [2021-06-05 06:38:26,251 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3534 transitions. Word has length 24 [2021-06-05 06:38:26,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:26,251 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3534 transitions. [2021-06-05 06:38:26,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3534 transitions. [2021-06-05 06:38:26,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:26,252 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:26,252 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:26,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-06-05 06:38:26,453 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:26,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:26,453 INFO L82 PathProgramCache]: Analyzing trace with hash 637491597, now seen corresponding path program 31 times [2021-06-05 06:38:26,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:26,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442872256] [2021-06-05 06:38:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:26,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:26,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442872256] [2021-06-05 06:38:26,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442872256] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:26,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277826806] [2021-06-05 06:38:26,480 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:26,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:26,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:26,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277826806] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:26,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:26,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:26,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609784964] [2021-06-05 06:38:26,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:26,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:26,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:26,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:26,555 INFO L87 Difference]: Start difference. First operand 1047 states and 3534 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:26,798 INFO L93 Difference]: Finished difference Result 1963 states and 6051 transitions. [2021-06-05 06:38:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:38:26,799 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:26,801 INFO L225 Difference]: With dead ends: 1963 [2021-06-05 06:38:26,801 INFO L226 Difference]: Without dead ends: 1959 [2021-06-05 06:38:26,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 149.1ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:38:26,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-06-05 06:38:26,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1047. [2021-06-05 06:38:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.376673040152964) internal successors, (3532), 1046 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3532 transitions. [2021-06-05 06:38:26,817 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3532 transitions. Word has length 24 [2021-06-05 06:38:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:26,818 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3532 transitions. [2021-06-05 06:38:26,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3532 transitions. [2021-06-05 06:38:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:26,819 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:26,819 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:27,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-06-05 06:38:27,033 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:27,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:27,034 INFO L82 PathProgramCache]: Analyzing trace with hash -877600375, now seen corresponding path program 32 times [2021-06-05 06:38:27,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:27,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992316816] [2021-06-05 06:38:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:27,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:27,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992316816] [2021-06-05 06:38:27,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992316816] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:27,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126165638] [2021-06-05 06:38:27,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:27,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:27,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:27,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:27,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:27,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126165638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:27,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:27,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:27,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814681198] [2021-06-05 06:38:27,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:27,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:27,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:27,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:27,147 INFO L87 Difference]: Start difference. First operand 1047 states and 3532 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:27,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:27,326 INFO L93 Difference]: Finished difference Result 1728 states and 5494 transitions. [2021-06-05 06:38:27,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:38:27,327 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:27,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:27,328 INFO L225 Difference]: With dead ends: 1728 [2021-06-05 06:38:27,328 INFO L226 Difference]: Without dead ends: 1716 [2021-06-05 06:38:27,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:38:27,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-06-05 06:38:27,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1047. [2021-06-05 06:38:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.372848948374761) internal successors, (3528), 1046 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3528 transitions. [2021-06-05 06:38:27,342 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3528 transitions. Word has length 24 [2021-06-05 06:38:27,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:27,342 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3528 transitions. [2021-06-05 06:38:27,342 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:27,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3528 transitions. [2021-06-05 06:38:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:27,344 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:27,344 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:27,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:27,557 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:27,557 INFO L82 PathProgramCache]: Analyzing trace with hash 719526341, now seen corresponding path program 33 times [2021-06-05 06:38:27,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:27,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042098955] [2021-06-05 06:38:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:27,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:27,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042098955] [2021-06-05 06:38:27,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042098955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:27,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995843302] [2021-06-05 06:38:27,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:27,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:27,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:27,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:27,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:27,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995843302] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:27,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:27,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:27,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170898285] [2021-06-05 06:38:27,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:27,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:27,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:27,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:27,698 INFO L87 Difference]: Start difference. First operand 1047 states and 3528 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:27,988 INFO L93 Difference]: Finished difference Result 1821 states and 5719 transitions. [2021-06-05 06:38:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:38:27,989 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:27,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:27,991 INFO L225 Difference]: With dead ends: 1821 [2021-06-05 06:38:27,991 INFO L226 Difference]: Without dead ends: 1821 [2021-06-05 06:38:27,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 198.0ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:38:27,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-06-05 06:38:28,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1119. [2021-06-05 06:38:28,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.370304114490161) internal successors, (3768), 1118 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3768 transitions. [2021-06-05 06:38:28,006 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3768 transitions. Word has length 24 [2021-06-05 06:38:28,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:28,006 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3768 transitions. [2021-06-05 06:38:28,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:28,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3768 transitions. [2021-06-05 06:38:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:28,008 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:28,008 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:28,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:28,213 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:28,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:28,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1932401801, now seen corresponding path program 34 times [2021-06-05 06:38:28,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:28,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621942006] [2021-06-05 06:38:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:28,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:28,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621942006] [2021-06-05 06:38:28,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621942006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:28,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876904102] [2021-06-05 06:38:28,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:28,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:28,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:28,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:28,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:28,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876904102] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:28,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:28,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:28,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135092737] [2021-06-05 06:38:28,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:28,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:28,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:28,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:28,330 INFO L87 Difference]: Start difference. First operand 1119 states and 3768 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:28,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:28,564 INFO L93 Difference]: Finished difference Result 1790 states and 5648 transitions. [2021-06-05 06:38:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:38:28,565 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:28,567 INFO L225 Difference]: With dead ends: 1790 [2021-06-05 06:38:28,567 INFO L226 Difference]: Without dead ends: 1786 [2021-06-05 06:38:28,567 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 157.1ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-06-05 06:38:28,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-06-05 06:38:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1119. [2021-06-05 06:38:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.368515205724508) internal successors, (3766), 1118 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3766 transitions. [2021-06-05 06:38:28,582 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3766 transitions. Word has length 24 [2021-06-05 06:38:28,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:28,582 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3766 transitions. [2021-06-05 06:38:28,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3766 transitions. [2021-06-05 06:38:28,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:28,593 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:28,593 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:28,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-06-05 06:38:28,809 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:28,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1095108317, now seen corresponding path program 35 times [2021-06-05 06:38:28,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:28,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790727282] [2021-06-05 06:38:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:28,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:28,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790727282] [2021-06-05 06:38:28,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790727282] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:28,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828267138] [2021-06-05 06:38:28,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:28,874 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:28,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:28,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:28,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:28,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828267138] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:28,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:28,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:28,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404210394] [2021-06-05 06:38:28,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:28,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:28,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:28,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:28,923 INFO L87 Difference]: Start difference. First operand 1119 states and 3766 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:29,060 INFO L93 Difference]: Finished difference Result 1649 states and 5332 transitions. [2021-06-05 06:38:29,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:38:29,060 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:38:29,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:29,062 INFO L225 Difference]: With dead ends: 1649 [2021-06-05 06:38:29,062 INFO L226 Difference]: Without dead ends: 1637 [2021-06-05 06:38:29,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:29,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-06-05 06:38:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1119. [2021-06-05 06:38:29,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.3649373881932023) internal successors, (3762), 1118 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3762 transitions. [2021-06-05 06:38:29,076 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3762 transitions. Word has length 24 [2021-06-05 06:38:29,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:29,076 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3762 transitions. [2021-06-05 06:38:29,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3762 transitions. [2021-06-05 06:38:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:29,077 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:29,077 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:29,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:29,278 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:29,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:29,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1918687339, now seen corresponding path program 4 times [2021-06-05 06:38:29,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:29,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825927026] [2021-06-05 06:38:29,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:29,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:29,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825927026] [2021-06-05 06:38:29,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825927026] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:29,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142100511] [2021-06-05 06:38:29,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:29,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:29,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:29,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:38:29,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:30,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:30,033 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:30,039 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:38:30,046 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:30,053 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:30,059 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:30,064 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:30,070 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:30,078 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:30,084 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:38:30,089 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:30,095 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:38:30,100 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:38:30,106 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:30,112 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:30,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:30,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:38:30,116 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:30,132 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:38:30,133 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:38:30,134 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:38:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:30,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142100511] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:30,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:30,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:38:30,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418920797] [2021-06-05 06:38:30,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:38:30,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:30,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:38:30,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:38:30,155 INFO L87 Difference]: Start difference. First operand 1119 states and 3762 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:30,823 INFO L93 Difference]: Finished difference Result 1517 states and 4955 transitions. [2021-06-05 06:38:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:38:30,823 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:38:30,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:30,825 INFO L225 Difference]: With dead ends: 1517 [2021-06-05 06:38:30,825 INFO L226 Difference]: Without dead ends: 1502 [2021-06-05 06:38:30,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 827.8ms TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:38:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-06-05 06:38:30,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1141. [2021-06-05 06:38:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 3.362280701754386) internal successors, (3833), 1140 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3833 transitions. [2021-06-05 06:38:30,841 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3833 transitions. Word has length 26 [2021-06-05 06:38:30,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:30,841 INFO L482 AbstractCegarLoop]: Abstraction has 1141 states and 3833 transitions. [2021-06-05 06:38:30,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:30,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3833 transitions. [2021-06-05 06:38:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:30,843 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:30,843 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:31,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:31,059 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:31,059 INFO L82 PathProgramCache]: Analyzing trace with hash -109710677, now seen corresponding path program 5 times [2021-06-05 06:38:31,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:31,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666047640] [2021-06-05 06:38:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:31,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:31,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666047640] [2021-06-05 06:38:31,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666047640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:31,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468434775] [2021-06-05 06:38:31,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:31,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:31,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:31,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:38:31,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:31,951 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-06-05 06:38:31,991 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_3], 2=[A, v_prenex_5]} [2021-06-05 06:38:31,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:31,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:31,996 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,114 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-06-05 06:38:32,115 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-05 06:38:32,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:38:32,120 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,141 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:38:32,146 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,164 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:32,166 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:38:32,166 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:15 [2021-06-05 06:38:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:32,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468434775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:32,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:32,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:38:32,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772344418] [2021-06-05 06:38:32,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:38:32,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:32,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:38:32,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:38:32,194 INFO L87 Difference]: Start difference. First operand 1141 states and 3833 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:33,146 INFO L93 Difference]: Finished difference Result 1714 states and 5519 transitions. [2021-06-05 06:38:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:38:33,146 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:38:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:33,148 INFO L225 Difference]: With dead ends: 1714 [2021-06-05 06:38:33,149 INFO L226 Difference]: Without dead ends: 1684 [2021-06-05 06:38:33,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1210.0ms TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:38:33,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2021-06-05 06:38:33,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1168. [2021-06-05 06:38:33,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 3.348757497857755) internal successors, (3908), 1167 states have internal predecessors, (3908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3908 transitions. [2021-06-05 06:38:33,163 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3908 transitions. Word has length 26 [2021-06-05 06:38:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:33,163 INFO L482 AbstractCegarLoop]: Abstraction has 1168 states and 3908 transitions. [2021-06-05 06:38:33,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3908 transitions. [2021-06-05 06:38:33,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:33,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:33,165 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:33,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:33,366 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:33,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:33,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1481718631, now seen corresponding path program 36 times [2021-06-05 06:38:33,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:33,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183243270] [2021-06-05 06:38:33,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:33,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:33,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183243270] [2021-06-05 06:38:33,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183243270] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:33,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381968203] [2021-06-05 06:38:33,733 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:33,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:33,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:33,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:38:33,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:34,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:38:34,306 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:38:34,314 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:38:34,322 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:38:34,330 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:38:34,340 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:38:34,350 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:38:34,358 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:38:34,366 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:38:34,374 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:38:34,382 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:38:34,390 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:38:34,398 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:38:34,406 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:38:34,414 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:38:34,419 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,436 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:38:34,437 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:38:34,437 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:38:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:34,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381968203] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:34,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:34,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:38:34,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379098366] [2021-06-05 06:38:34,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:34,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:34,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:34,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:34,461 INFO L87 Difference]: Start difference. First operand 1168 states and 3908 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:35,805 INFO L93 Difference]: Finished difference Result 1625 states and 5243 transitions. [2021-06-05 06:38:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:38:35,805 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:38:35,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:35,807 INFO L225 Difference]: With dead ends: 1625 [2021-06-05 06:38:35,807 INFO L226 Difference]: Without dead ends: 1610 [2021-06-05 06:38:35,808 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1454.8ms TimeCoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:38:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-06-05 06:38:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1198. [2021-06-05 06:38:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1197 states have (on average 3.3333333333333335) internal successors, (3990), 1197 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 3990 transitions. [2021-06-05 06:38:35,821 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 3990 transitions. Word has length 26 [2021-06-05 06:38:35,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:35,821 INFO L482 AbstractCegarLoop]: Abstraction has 1198 states and 3990 transitions. [2021-06-05 06:38:35,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 3990 transitions. [2021-06-05 06:38:35,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:35,823 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:35,823 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:36,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-06-05 06:38:36,024 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:36,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:36,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2008201489, now seen corresponding path program 6 times [2021-06-05 06:38:36,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:36,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900415623] [2021-06-05 06:38:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:36,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:36,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900415623] [2021-06-05 06:38:36,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900415623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:36,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164390351] [2021-06-05 06:38:36,316 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:36,341 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:36,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:36,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:38:36,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:36,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,610 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:36,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:38:36,611 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,619 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:36,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:38:36,623 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,630 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:36,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:36,631 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,640 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:36,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 06:38:36,646 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,656 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:36,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:38:36,661 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,672 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:36,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-06-05 06:38:36,674 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,683 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:36,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:36,685 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,697 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:36,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:38:36,698 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,709 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:36,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 06:38:36,710 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,721 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:36,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:38:36,722 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,733 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:36,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-06-05 06:38:36,734 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,743 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:36,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:38:36,744 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,754 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:36,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:38:36,754 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,762 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:36,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:36,764 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,771 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:36,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:36,771 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:36,779 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:36,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:38:36,780 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:36,858 INFO L628 ElimStorePlain]: treesize reduction 16, result has 85.6 percent of original size [2021-06-05 06:38:36,859 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:38:36,859 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:589, output treesize:95 [2021-06-05 06:38:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:36,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164390351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:36,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:36,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:38:36,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150024579] [2021-06-05 06:38:36,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:36,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:36,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:36,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:36,958 INFO L87 Difference]: Start difference. First operand 1198 states and 3990 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:37,511 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2021-06-05 06:38:38,479 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-06-05 06:38:39,100 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2021-06-05 06:38:39,540 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-05 06:38:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:39,824 INFO L93 Difference]: Finished difference Result 2145 states and 6707 transitions. [2021-06-05 06:38:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 06:38:39,825 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:38:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:39,827 INFO L225 Difference]: With dead ends: 2145 [2021-06-05 06:38:39,827 INFO L226 Difference]: Without dead ends: 2100 [2021-06-05 06:38:39,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 2597.9ms TimeCoverageRelationStatistics Valid=366, Invalid=2084, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:38:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-06-05 06:38:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1216. [2021-06-05 06:38:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 1215 states have (on average 3.3390946502057615) internal successors, (4057), 1215 states have internal predecessors, (4057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 4057 transitions. [2021-06-05 06:38:39,845 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 4057 transitions. Word has length 26 [2021-06-05 06:38:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:39,845 INFO L482 AbstractCegarLoop]: Abstraction has 1216 states and 4057 transitions. [2021-06-05 06:38:39,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 4057 transitions. [2021-06-05 06:38:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:39,847 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:39,847 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:40,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:40,058 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash -457819925, now seen corresponding path program 37 times [2021-06-05 06:38:40,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:40,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490218712] [2021-06-05 06:38:40,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:40,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:40,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490218712] [2021-06-05 06:38:40,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490218712] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:40,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974878739] [2021-06-05 06:38:40,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:40,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:38:40,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:40,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:38:40,970 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:38:40,977 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:38:40,984 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:38:40,992 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:40,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:38:41,000 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:38:41,008 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:38:41,015 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:38:41,022 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:38:41,031 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:38:41,038 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:38:41,046 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:38:41,053 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:38:41,059 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:38:41,065 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:41,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:41,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:38:41,071 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:41,086 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:38:41,087 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:38:41,087 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:38:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:41,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974878739] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:41,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:41,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:38:41,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449260324] [2021-06-05 06:38:41,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:41,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:41,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:41,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:41,109 INFO L87 Difference]: Start difference. First operand 1216 states and 4057 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:43,808 INFO L93 Difference]: Finished difference Result 1915 states and 6096 transitions. [2021-06-05 06:38:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:38:43,808 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:38:43,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:43,810 INFO L225 Difference]: With dead ends: 1915 [2021-06-05 06:38:43,811 INFO L226 Difference]: Without dead ends: 1900 [2021-06-05 06:38:43,811 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 2693.2ms TimeCoverageRelationStatistics Valid=500, Invalid=2362, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:38:43,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2021-06-05 06:38:43,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1227. [2021-06-05 06:38:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 3.3450244698205545) internal successors, (4101), 1226 states have internal predecessors, (4101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 4101 transitions. [2021-06-05 06:38:43,826 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 4101 transitions. Word has length 26 [2021-06-05 06:38:43,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:43,826 INFO L482 AbstractCegarLoop]: Abstraction has 1227 states and 4101 transitions. [2021-06-05 06:38:43,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:43,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 4101 transitions. [2021-06-05 06:38:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:43,828 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:43,828 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:44,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:44,029 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:44,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:44,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1434138769, now seen corresponding path program 38 times [2021-06-05 06:38:44,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:44,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329856469] [2021-06-05 06:38:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:44,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:44,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329856469] [2021-06-05 06:38:44,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329856469] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:44,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513355731] [2021-06-05 06:38:44,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:44,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:44,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:44,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:38:44,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:45,021 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:38:45,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 06:38:45,031 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,082 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:38:45,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 47 [2021-06-05 06:38:45,091 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,111 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:38:45,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:38:45,112 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,156 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:38:45,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 47 [2021-06-05 06:38:45,167 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,198 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-06-05 06:38:45,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 06:38:45,202 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,221 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:38:45,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:38:45,222 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,263 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:38:45,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 47 [2021-06-05 06:38:45,277 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,322 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:38:45,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 06:38:45,333 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,364 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-06-05 06:38:45,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 06:38:45,366 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,406 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:38:45,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 45 [2021-06-05 06:38:45,429 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,465 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:38:45,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-05 06:38:45,484 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,502 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:38:45,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:38:45,503 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,521 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:38:45,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 1 [2021-06-05 06:38:45,522 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,557 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:38:45,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 40 [2021-06-05 06:38:45,562 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,596 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:38:45,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-05 06:38:45,603 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,631 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:38:45,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 40 [2021-06-05 06:38:45,636 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:45,884 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2021-06-05 06:38:45,885 INFO L628 ElimStorePlain]: treesize reduction 279, result has 51.0 percent of original size [2021-06-05 06:38:45,895 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:38:45,895 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:833, output treesize:341 [2021-06-05 06:38:46,119 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-06-05 06:38:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:46,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513355731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:46,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:46,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-05 06:38:46,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070355336] [2021-06-05 06:38:46,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 06:38:46,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:46,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 06:38:46,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:38:46,277 INFO L87 Difference]: Start difference. First operand 1227 states and 4101 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:47,856 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2021-06-05 06:38:48,260 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2021-06-05 06:38:48,616 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2021-06-05 06:38:49,036 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-06-05 06:38:49,306 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2021-06-05 06:38:49,812 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2021-06-05 06:38:50,158 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2021-06-05 06:38:50,327 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 37 [2021-06-05 06:38:50,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:50,826 INFO L93 Difference]: Finished difference Result 2515 states and 7728 transitions. [2021-06-05 06:38:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:38:50,827 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:38:50,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:50,830 INFO L225 Difference]: With dead ends: 2515 [2021-06-05 06:38:50,830 INFO L226 Difference]: Without dead ends: 2470 [2021-06-05 06:38:50,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 4726.4ms TimeCoverageRelationStatistics Valid=695, Invalid=3727, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:38:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-05 06:38:50,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 1399. [2021-06-05 06:38:50,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 3.3125894134477827) internal successors, (4631), 1398 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 4631 transitions. [2021-06-05 06:38:50,849 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 4631 transitions. Word has length 26 [2021-06-05 06:38:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:50,849 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 4631 transitions. [2021-06-05 06:38:50,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 4631 transitions. [2021-06-05 06:38:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:50,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:50,851 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:51,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable364 [2021-06-05 06:38:51,051 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:51,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:51,052 INFO L82 PathProgramCache]: Analyzing trace with hash 775761299, now seen corresponding path program 7 times [2021-06-05 06:38:51,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:51,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51885146] [2021-06-05 06:38:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:51,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:51,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51885146] [2021-06-05 06:38:51,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51885146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:51,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079386806] [2021-06-05 06:38:51,377 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:51,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:38:51,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:51,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:38:51,791 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:51,797 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:38:51,804 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:51,810 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:38:51,816 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:51,822 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:51,828 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:38:51,834 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:38:51,839 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:51,845 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:51,851 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:51,857 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:51,866 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:38:51,871 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:51,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:51,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:51,874 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:51,905 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:38:51,906 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:38:51,906 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:38:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:51,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079386806] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:51,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:51,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:38:51,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178945086] [2021-06-05 06:38:51,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:38:51,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:51,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:38:51,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:38:51,929 INFO L87 Difference]: Start difference. First operand 1399 states and 4631 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:52,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:52,715 INFO L93 Difference]: Finished difference Result 1804 states and 5851 transitions. [2021-06-05 06:38:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:38:52,715 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:38:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:52,718 INFO L225 Difference]: With dead ends: 1804 [2021-06-05 06:38:52,718 INFO L226 Difference]: Without dead ends: 1789 [2021-06-05 06:38:52,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 966.1ms TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:38:52,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2021-06-05 06:38:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1410. [2021-06-05 06:38:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 3.3101490418736694) internal successors, (4664), 1409 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 4664 transitions. [2021-06-05 06:38:52,734 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 4664 transitions. Word has length 26 [2021-06-05 06:38:52,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:52,734 INFO L482 AbstractCegarLoop]: Abstraction has 1410 states and 4664 transitions. [2021-06-05 06:38:52,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:52,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 4664 transitions. [2021-06-05 06:38:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:52,736 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:52,736 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:52,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:52,937 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:52,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:52,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1252636717, now seen corresponding path program 8 times [2021-06-05 06:38:52,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:52,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395797294] [2021-06-05 06:38:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:53,259 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2021-06-05 06:38:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:53,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:53,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395797294] [2021-06-05 06:38:53,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395797294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:53,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486262537] [2021-06-05 06:38:53,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:53,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:53,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:53,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:38:53,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:53,744 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-05 06:38:53,855 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:53,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 06:38:53,858 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:53,869 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:38:53,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:38:53,870 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,177 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 125 [2021-06-05 06:38:54,178 INFO L628 ElimStorePlain]: treesize reduction 146, result has 72.2 percent of original size [2021-06-05 06:38:54,200 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:54,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:38:54,201 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,218 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:54,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:38:54,220 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,480 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2021-06-05 06:38:54,480 INFO L628 ElimStorePlain]: treesize reduction 31, result has 91.5 percent of original size [2021-06-05 06:38:54,495 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:54,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:38:54,499 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,615 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 06:38:54,615 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:54,632 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:54,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:38:54,633 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,747 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-05 06:38:54,748 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:54,767 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:54,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:38:54,770 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:54,878 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:38:54,878 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:54,898 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:54,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:38:54,902 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,006 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:38:55,006 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:55,025 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:55,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:38:55,026 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,128 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:38:55,128 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:55,144 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:55,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:38:55,145 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,243 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:55,257 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:38:55,257 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:331 [2021-06-05 06:38:55,407 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2021-06-05 06:38:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:55,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486262537] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:55,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:55,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:38:55,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168082567] [2021-06-05 06:38:55,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:55,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:55,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:55,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:55,457 INFO L87 Difference]: Start difference. First operand 1410 states and 4664 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:56,813 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 06:38:57,017 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-06-05 06:38:57,376 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-06-05 06:38:57,665 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2021-06-05 06:38:58,054 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2021-06-05 06:38:58,497 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2021-06-05 06:38:58,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:58,631 INFO L93 Difference]: Finished difference Result 2138 states and 6778 transitions. [2021-06-05 06:38:58,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:38:58,631 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:38:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:58,634 INFO L225 Difference]: With dead ends: 2138 [2021-06-05 06:38:58,634 INFO L226 Difference]: Without dead ends: 2108 [2021-06-05 06:38:58,635 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 3456.6ms TimeCoverageRelationStatistics Valid=295, Invalid=1685, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:38:58,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2021-06-05 06:38:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1416. [2021-06-05 06:38:58,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.3123674911660776) internal successors, (4687), 1415 states have internal predecessors, (4687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:58,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4687 transitions. [2021-06-05 06:38:58,652 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4687 transitions. Word has length 26 [2021-06-05 06:38:58,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:58,652 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 4687 transitions. [2021-06-05 06:38:58,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:58,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4687 transitions. [2021-06-05 06:38:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:58,654 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:58,654 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:38:58,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable552 [2021-06-05 06:38:58,855 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:58,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:58,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1104920871, now seen corresponding path program 9 times [2021-06-05 06:38:58,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:58,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293394736] [2021-06-05 06:38:58,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:59,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:59,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293394736] [2021-06-05 06:38:59,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293394736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:59,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699638700] [2021-06-05 06:38:59,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:59,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:59,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:59,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:38:59,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:59,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:59,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:59,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:59,649 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:59,742 INFO L628 ElimStorePlain]: treesize reduction 130, result has 44.0 percent of original size [2021-06-05 06:38:59,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:59,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:38:59,747 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:59,783 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:59,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:59,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:59,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:38:59,788 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:59,813 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:59,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:59,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:59,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:59,818 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:59,839 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:59,840 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:38:59,841 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:265, output treesize:29 [2021-06-05 06:38:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:38:59,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699638700] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:59,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:59,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:38:59,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677496316] [2021-06-05 06:38:59,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:38:59,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:59,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:38:59,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:38:59,871 INFO L87 Difference]: Start difference. First operand 1416 states and 4687 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:00,435 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2021-06-05 06:39:00,661 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-06-05 06:39:00,824 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-06-05 06:39:01,173 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2021-06-05 06:39:01,333 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2021-06-05 06:39:01,604 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2021-06-05 06:39:01,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:01,706 INFO L93 Difference]: Finished difference Result 2242 states and 7149 transitions. [2021-06-05 06:39:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:39:01,706 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:01,709 INFO L225 Difference]: With dead ends: 2242 [2021-06-05 06:39:01,709 INFO L226 Difference]: Without dead ends: 2212 [2021-06-05 06:39:01,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1948.3ms TimeCoverageRelationStatistics Valid=286, Invalid=1046, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:39:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2021-06-05 06:39:01,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1446. [2021-06-05 06:39:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 3.322491349480969) internal successors, (4801), 1445 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4801 transitions. [2021-06-05 06:39:01,727 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4801 transitions. Word has length 26 [2021-06-05 06:39:01,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:01,727 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4801 transitions. [2021-06-05 06:39:01,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:01,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4801 transitions. [2021-06-05 06:39:01,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:01,729 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:01,730 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:01,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable585,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:01,930 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:01,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:01,930 INFO L82 PathProgramCache]: Analyzing trace with hash 937111779, now seen corresponding path program 10 times [2021-06-05 06:39:01,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:01,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296177203] [2021-06-05 06:39:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:02,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:02,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296177203] [2021-06-05 06:39:02,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296177203] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:02,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336506635] [2021-06-05 06:39:02,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:02,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:39:02,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:02,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:02,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:02,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:02,536 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:39:02,549 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:02,555 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:02,561 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:02,566 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:39:02,572 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:02,577 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:39:02,583 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:02,588 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:02,593 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:02,598 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:39:02,603 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:02,608 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:02,621 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:02,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:02,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:39:02,625 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:02,642 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:39:02,643 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:39:02,643 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:39:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:02,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336506635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:02,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:02,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:39:02,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622549820] [2021-06-05 06:39:02,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:39:02,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:02,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:39:02,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:39:02,670 INFO L87 Difference]: Start difference. First operand 1446 states and 4801 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:03,212 INFO L93 Difference]: Finished difference Result 1753 states and 5743 transitions. [2021-06-05 06:39:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:39:03,213 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:03,216 INFO L225 Difference]: With dead ends: 1753 [2021-06-05 06:39:03,216 INFO L226 Difference]: Without dead ends: 1738 [2021-06-05 06:39:03,216 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 631.4ms TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:39:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-06-05 06:39:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1455. [2021-06-05 06:39:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 3.3266850068775793) internal successors, (4837), 1454 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 4837 transitions. [2021-06-05 06:39:03,233 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 4837 transitions. Word has length 26 [2021-06-05 06:39:03,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:03,233 INFO L482 AbstractCegarLoop]: Abstraction has 1455 states and 4837 transitions. [2021-06-05 06:39:03,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 4837 transitions. [2021-06-05 06:39:03,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:03,235 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:03,235 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:03,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable606,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:03,436 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:03,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:03,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1130404249, now seen corresponding path program 11 times [2021-06-05 06:39:03,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:03,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469864039] [2021-06-05 06:39:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:03,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:03,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469864039] [2021-06-05 06:39:03,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469864039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:03,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308319658] [2021-06-05 06:39:03,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 06:39:03,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:39:03,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:03,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:39:03,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:04,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,028 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:04,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:39:04,029 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,051 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:04,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:04,053 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,062 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:04,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:39:04,069 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,080 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:04,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:04,081 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,090 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:04,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:04,091 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,099 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:04,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:04,099 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,108 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:04,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:04,109 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,120 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:04,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:39:04,121 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,132 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:04,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:04,135 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,143 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:04,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:04,144 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,152 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:04,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:04,152 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,161 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:04,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2021-06-05 06:39:04,162 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,170 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:04,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:04,170 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,178 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:04,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:04,178 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,186 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:04,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:04,186 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:04,193 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:04,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:04,195 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:04,284 INFO L628 ElimStorePlain]: treesize reduction 24, result has 82.5 percent of original size [2021-06-05 06:39:04,285 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:39:04,286 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:617, output treesize:91 [2021-06-05 06:39:04,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:04,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308319658] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:04,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:04,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:39:04,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320234295] [2021-06-05 06:39:04,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:04,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:04,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:04,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:04,371 INFO L87 Difference]: Start difference. First operand 1455 states and 4837 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:05,231 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-06-05 06:39:05,625 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2021-06-05 06:39:05,805 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-06-05 06:39:06,009 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2021-06-05 06:39:06,576 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-06-05 06:39:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:06,753 INFO L93 Difference]: Finished difference Result 2493 states and 7968 transitions. [2021-06-05 06:39:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:39:06,753 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:06,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:06,756 INFO L225 Difference]: With dead ends: 2493 [2021-06-05 06:39:06,756 INFO L226 Difference]: Without dead ends: 2463 [2021-06-05 06:39:06,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2193.9ms TimeCoverageRelationStatistics Valid=369, Invalid=1611, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:39:06,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2021-06-05 06:39:06,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 1468. [2021-06-05 06:39:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.3340149965916837) internal successors, (4891), 1467 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 4891 transitions. [2021-06-05 06:39:06,777 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 4891 transitions. Word has length 26 [2021-06-05 06:39:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:06,777 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 4891 transitions. [2021-06-05 06:39:06,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 4891 transitions. [2021-06-05 06:39:06,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:06,779 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:06,779 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:06,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable648,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:06,982 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:06,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:06,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1627125609, now seen corresponding path program 12 times [2021-06-05 06:39:06,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:06,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056302446] [2021-06-05 06:39:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:07,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:07,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056302446] [2021-06-05 06:39:07,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056302446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:07,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695858587] [2021-06-05 06:39:07,257 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:07,281 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:39:07,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:07,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:07,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,511 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:07,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 06:39:07,512 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,525 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:39:07,526 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,545 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:07,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-06-05 06:39:07,549 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,561 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:39:07,563 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,574 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:39:07,574 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,585 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:07,586 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,598 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:39:07,598 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,614 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:07,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:39:07,615 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,625 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:07,626 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,650 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:39:07,651 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,662 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:39:07,663 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,674 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 16 [2021-06-05 06:39:07,676 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,686 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:07,687 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,696 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:39:07,698 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,709 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:07,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17 [2021-06-05 06:39:07,711 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:07,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:07,718 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:07,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:39:07,719 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:07,784 INFO L628 ElimStorePlain]: treesize reduction 19, result has 82.2 percent of original size [2021-06-05 06:39:07,785 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:39:07,785 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:689, output treesize:88 [2021-06-05 06:39:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:07,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695858587] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:07,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:07,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:39:07,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320939408] [2021-06-05 06:39:07,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:07,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:07,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:07,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:07,884 INFO L87 Difference]: Start difference. First operand 1468 states and 4891 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:09,799 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2021-06-05 06:39:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:10,161 INFO L93 Difference]: Finished difference Result 2313 states and 7429 transitions. [2021-06-05 06:39:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:39:10,161 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:10,164 INFO L225 Difference]: With dead ends: 2313 [2021-06-05 06:39:10,164 INFO L226 Difference]: Without dead ends: 2283 [2021-06-05 06:39:10,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 2187.3ms TimeCoverageRelationStatistics Valid=388, Invalid=1868, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:39:10,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-06-05 06:39:10,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 1477. [2021-06-05 06:39:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 3.3401084010840107) internal successors, (4930), 1476 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4930 transitions. [2021-06-05 06:39:10,184 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4930 transitions. Word has length 26 [2021-06-05 06:39:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:10,184 INFO L482 AbstractCegarLoop]: Abstraction has 1477 states and 4930 transitions. [2021-06-05 06:39:10,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4930 transitions. [2021-06-05 06:39:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:10,186 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:10,186 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:10,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable695 [2021-06-05 06:39:10,386 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:10,386 INFO L82 PathProgramCache]: Analyzing trace with hash -158392533, now seen corresponding path program 39 times [2021-06-05 06:39:10,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:10,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664129970] [2021-06-05 06:39:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:10,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:10,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664129970] [2021-06-05 06:39:10,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664129970] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:10,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526495710] [2021-06-05 06:39:10,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:10,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:39:10,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:10,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:10,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:11,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:39:11,149 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:39:11,157 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:39:11,164 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:11,171 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:39:11,178 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:39:11,190 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:39:11,199 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:39:11,207 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:11,215 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:39:11,222 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:39:11,230 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:39:11,237 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:39:11,245 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:39:11,253 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:39:11,258 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,276 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:39:11,277 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:39:11,277 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:39:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:11,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526495710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:11,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:11,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:39:11,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752198288] [2021-06-05 06:39:11,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:11,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:11,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:11,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:11,307 INFO L87 Difference]: Start difference. First operand 1477 states and 4930 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:12,027 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-06-05 06:39:12,490 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-06-05 06:39:13,087 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 06:39:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:14,317 INFO L93 Difference]: Finished difference Result 3323 states and 10316 transitions. [2021-06-05 06:39:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:39:14,317 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:14,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:14,329 INFO L225 Difference]: With dead ends: 3323 [2021-06-05 06:39:14,329 INFO L226 Difference]: Without dead ends: 3278 [2021-06-05 06:39:14,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 2677.8ms TimeCoverageRelationStatistics Valid=670, Invalid=3362, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:39:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3278 states. [2021-06-05 06:39:14,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3278 to 1496. [2021-06-05 06:39:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.3578595317725752) internal successors, (5020), 1495 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:14,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5020 transitions. [2021-06-05 06:39:14,354 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5020 transitions. Word has length 26 [2021-06-05 06:39:14,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:14,354 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5020 transitions. [2021-06-05 06:39:14,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:14,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5020 transitions. [2021-06-05 06:39:14,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:14,356 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:14,356 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:14,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable716 [2021-06-05 06:39:14,557 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:14,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:14,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1043919835, now seen corresponding path program 40 times [2021-06-05 06:39:14,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:14,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151881988] [2021-06-05 06:39:14,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:14,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:14,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151881988] [2021-06-05 06:39:14,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151881988] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:14,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986423892] [2021-06-05 06:39:14,865 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:14,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:39:14,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:14,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:14,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:15,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:39:15,377 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:39:15,385 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:39:15,394 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:39:15,401 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:15,409 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:39:15,416 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:39:15,424 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:15,432 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:39:15,439 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:39:15,447 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:39:15,454 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:39:15,466 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:39:15,477 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:39:15,484 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:39:15,489 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,508 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:39:15,509 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:39:15,509 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:39:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:15,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986423892] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:15,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:15,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:39:15,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352474066] [2021-06-05 06:39:15,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:15,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:15,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:15,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:15,537 INFO L87 Difference]: Start difference. First operand 1496 states and 5020 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:16,344 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2021-06-05 06:39:16,860 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2021-06-05 06:39:17,412 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2021-06-05 06:39:18,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:18,309 INFO L93 Difference]: Finished difference Result 3094 states and 9789 transitions. [2021-06-05 06:39:18,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:39:18,309 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:18,313 INFO L225 Difference]: With dead ends: 3094 [2021-06-05 06:39:18,313 INFO L226 Difference]: Without dead ends: 3049 [2021-06-05 06:39:18,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 2607.7ms TimeCoverageRelationStatistics Valid=602, Invalid=2704, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:39:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-06-05 06:39:18,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 1496. [2021-06-05 06:39:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.3585284280936456) internal successors, (5021), 1495 states have internal predecessors, (5021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5021 transitions. [2021-06-05 06:39:18,336 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5021 transitions. Word has length 26 [2021-06-05 06:39:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:18,336 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5021 transitions. [2021-06-05 06:39:18,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5021 transitions. [2021-06-05 06:39:18,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:18,338 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:18,339 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:18,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable806,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:18,539 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:18,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:18,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1417398809, now seen corresponding path program 41 times [2021-06-05 06:39:18,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:18,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300874962] [2021-06-05 06:39:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:18,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:18,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300874962] [2021-06-05 06:39:18,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300874962] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:18,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382989022] [2021-06-05 06:39:18,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:18,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:39:18,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:18,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:18,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:19,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,285 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:39:19,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 06:39:19,290 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,305 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:19,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:39:19,306 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,332 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:39:19,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-05 06:39:19,337 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,375 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:19,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:39:19,376 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,391 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:19,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:39:19,392 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,406 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:19,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:39:19,407 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,429 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:39:19,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 25 [2021-06-05 06:39:19,430 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,452 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:19,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-05 06:39:19,459 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,481 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:39:19,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-05 06:39:19,483 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,497 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:19,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:39:19,498 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,519 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 06:39:19,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-05 06:39:19,520 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,545 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:19,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:39:19,546 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,560 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:19,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:39:19,561 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,575 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:19,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:39:19,575 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,588 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:19,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:39:19,589 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,597 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:19,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:39:19,597 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,673 INFO L628 ElimStorePlain]: treesize reduction 24, result has 79.5 percent of original size [2021-06-05 06:39:19,675 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:39:19,675 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:75 [2021-06-05 06:39:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:19,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382989022] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:19,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:19,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:39:19,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74252064] [2021-06-05 06:39:19,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:19,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:19,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:19,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:19,750 INFO L87 Difference]: Start difference. First operand 1496 states and 5021 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:20,527 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-06-05 06:39:21,035 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 06:39:21,593 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-06-05 06:39:22,251 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2021-06-05 06:39:22,629 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2021-06-05 06:39:23,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:23,153 INFO L93 Difference]: Finished difference Result 3560 states and 11117 transitions. [2021-06-05 06:39:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:39:23,153 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:23,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:23,158 INFO L225 Difference]: With dead ends: 3560 [2021-06-05 06:39:23,158 INFO L226 Difference]: Without dead ends: 3500 [2021-06-05 06:39:23,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 3030.1ms TimeCoverageRelationStatistics Valid=813, Invalid=3347, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:39:23,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2021-06-05 06:39:23,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 1512. [2021-06-05 06:39:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.370615486432826) internal successors, (5093), 1511 states have internal predecessors, (5093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5093 transitions. [2021-06-05 06:39:23,183 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5093 transitions. Word has length 26 [2021-06-05 06:39:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:23,183 INFO L482 AbstractCegarLoop]: Abstraction has 1512 states and 5093 transitions. [2021-06-05 06:39:23,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5093 transitions. [2021-06-05 06:39:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:23,185 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:23,185 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:23,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable902 [2021-06-05 06:39:23,386 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:23,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:23,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1034556623, now seen corresponding path program 13 times [2021-06-05 06:39:23,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:23,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615022526] [2021-06-05 06:39:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:23,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:23,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615022526] [2021-06-05 06:39:23,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615022526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:23,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188010538] [2021-06-05 06:39:23,660 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:23,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:23,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:24,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:24,024 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:24,029 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:24,034 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:24,048 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:39:24,053 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:24,058 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:39:24,065 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:39:24,070 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:39:24,076 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:24,081 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:24,086 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:24,091 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:39:24,097 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:24,101 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:24,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:24,104 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,122 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:39:24,123 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:39:24,123 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:39:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:24,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188010538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:24,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:24,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:24,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307746543] [2021-06-05 06:39:24,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:24,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:24,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:24,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:24,146 INFO L87 Difference]: Start difference. First operand 1512 states and 5093 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:24,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:24,739 INFO L93 Difference]: Finished difference Result 1895 states and 6252 transitions. [2021-06-05 06:39:24,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:39:24,739 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:24,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:24,742 INFO L225 Difference]: With dead ends: 1895 [2021-06-05 06:39:24,742 INFO L226 Difference]: Without dead ends: 1880 [2021-06-05 06:39:24,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 783.0ms TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:39:24,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-06-05 06:39:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1520. [2021-06-05 06:39:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 3.366688610928242) internal successors, (5114), 1519 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 5114 transitions. [2021-06-05 06:39:24,760 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 5114 transitions. Word has length 26 [2021-06-05 06:39:24,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:24,760 INFO L482 AbstractCegarLoop]: Abstraction has 1520 states and 5114 transitions. [2021-06-05 06:39:24,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 5114 transitions. [2021-06-05 06:39:24,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:24,762 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:24,762 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:24,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1025 [2021-06-05 06:39:24,977 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:24,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:24,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1195907103, now seen corresponding path program 14 times [2021-06-05 06:39:24,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:24,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085467887] [2021-06-05 06:39:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:25,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:25,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085467887] [2021-06-05 06:39:25,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085467887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:25,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094026754] [2021-06-05 06:39:25,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:25,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:39:25,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:25,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:25,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:25,665 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:39:25,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:39:25,667 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,675 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:25,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:25,675 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,684 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:25,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:25,684 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,693 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:25,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:25,698 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,706 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:25,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:25,707 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,715 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:25,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:25,716 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,733 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:25,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:39:25,736 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,753 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:25,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:39:25,757 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,775 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:25,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:39:25,794 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,803 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:25,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:25,804 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,823 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:25,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:39:25,825 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,837 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-06-05 06:39:25,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 19 [2021-06-05 06:39:25,838 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,846 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:25,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:25,847 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,856 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:25,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:39:25,856 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,864 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:25,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:39:25,865 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,870 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:25,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:25,870 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:25,980 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-06-05 06:39:25,981 INFO L628 ElimStorePlain]: treesize reduction 4, result has 97.4 percent of original size [2021-06-05 06:39:25,984 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:39:25,984 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:697, output treesize:177 [2021-06-05 06:39:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:26,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094026754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:26,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:26,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-05 06:39:26,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861170534] [2021-06-05 06:39:26,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:26,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:26,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:26,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:26,201 INFO L87 Difference]: Start difference. First operand 1520 states and 5114 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:26,989 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2021-06-05 06:39:27,383 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2021-06-05 06:39:27,667 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-05 06:39:27,877 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-06-05 06:39:28,066 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2021-06-05 06:39:28,499 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2021-06-05 06:39:28,879 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-06-05 06:39:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:29,089 INFO L93 Difference]: Finished difference Result 2084 states and 6791 transitions. [2021-06-05 06:39:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:39:29,089 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:29,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:29,092 INFO L225 Difference]: With dead ends: 2084 [2021-06-05 06:39:29,092 INFO L226 Difference]: Without dead ends: 2069 [2021-06-05 06:39:29,092 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 2925.5ms TimeCoverageRelationStatistics Valid=323, Invalid=1839, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:39:29,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-06-05 06:39:29,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1516. [2021-06-05 06:39:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.3755775577557756) internal successors, (5114), 1515 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5114 transitions. [2021-06-05 06:39:29,109 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5114 transitions. Word has length 26 [2021-06-05 06:39:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:29,110 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 5114 transitions. [2021-06-05 06:39:29,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5114 transitions. [2021-06-05 06:39:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:29,112 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:29,112 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:29,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1067 [2021-06-05 06:39:29,313 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:29,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:29,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1175939077, now seen corresponding path program 15 times [2021-06-05 06:39:29,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:29,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998608354] [2021-06-05 06:39:29,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:29,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:29,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998608354] [2021-06-05 06:39:29,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998608354] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:29,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399340399] [2021-06-05 06:39:29,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:29,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:39:29,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:29,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:29,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:29,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,867 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:29,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:29,868 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,876 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:29,876 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,887 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:29,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:39:29,889 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,900 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:29,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:39:29,901 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,909 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:29,910 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,917 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:29,918 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,926 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:29,927 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,935 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:39:29,936 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,945 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:29,946 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,956 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:29,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:39:29,959 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,966 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:29,967 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,976 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:29,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:29,978 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,985 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:29,986 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:29,993 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:29,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:29,993 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:29,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:30,002 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:30,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:30,003 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:30,008 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:30,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:30,009 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,079 INFO L628 ElimStorePlain]: treesize reduction 60, result has 57.4 percent of original size [2021-06-05 06:39:30,082 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:39:30,082 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:617, output treesize:71 [2021-06-05 06:39:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:30,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399340399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:30,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:30,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:39:30,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651494579] [2021-06-05 06:39:30,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:30,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:30,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:30,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:30,167 INFO L87 Difference]: Start difference. First operand 1516 states and 5114 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:31,183 INFO L93 Difference]: Finished difference Result 2050 states and 6744 transitions. [2021-06-05 06:39:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:39:31,184 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:31,186 INFO L225 Difference]: With dead ends: 2050 [2021-06-05 06:39:31,186 INFO L226 Difference]: Without dead ends: 2035 [2021-06-05 06:39:31,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1085.1ms TimeCoverageRelationStatistics Valid=185, Invalid=807, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:39:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-06-05 06:39:31,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1516. [2021-06-05 06:39:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.3755775577557756) internal successors, (5114), 1515 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:31,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5114 transitions. [2021-06-05 06:39:31,204 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5114 transitions. Word has length 26 [2021-06-05 06:39:31,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:31,205 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 5114 transitions. [2021-06-05 06:39:31,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:31,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5114 transitions. [2021-06-05 06:39:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:31,207 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:31,207 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:31,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1121 [2021-06-05 06:39:31,407 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:31,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:31,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1368330285, now seen corresponding path program 16 times [2021-06-05 06:39:31,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:31,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017357722] [2021-06-05 06:39:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:31,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:31,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017357722] [2021-06-05 06:39:31,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017357722] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:31,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842834833] [2021-06-05 06:39:31,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:31,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:39:31,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:31,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:31,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:32,175 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2021-06-05 06:39:32,234 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_38], 2=[A, v_prenex_37]} [2021-06-05 06:39:32,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:32,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:39:32,239 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:32,337 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-05 06:39:32,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:32,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:32,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:39:32,342 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:32,363 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:32,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:32,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:32,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:39:32,367 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:32,384 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:32,386 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 06:39:32,386 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:22 [2021-06-05 06:39:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:32,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842834833] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:32,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:32,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:32,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134772208] [2021-06-05 06:39:32,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:32,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:32,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:32,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:32,419 INFO L87 Difference]: Start difference. First operand 1516 states and 5114 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:33,308 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 06:39:33,629 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2021-06-05 06:39:33,782 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2021-06-05 06:39:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:34,004 INFO L93 Difference]: Finished difference Result 2399 states and 7708 transitions. [2021-06-05 06:39:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:39:34,004 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:34,007 INFO L225 Difference]: With dead ends: 2399 [2021-06-05 06:39:34,007 INFO L226 Difference]: Without dead ends: 2354 [2021-06-05 06:39:34,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1797.5ms TimeCoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:39:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-06-05 06:39:34,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1531. [2021-06-05 06:39:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 3.3816993464052287) internal successors, (5174), 1530 states have internal predecessors, (5174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 5174 transitions. [2021-06-05 06:39:34,028 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 5174 transitions. Word has length 26 [2021-06-05 06:39:34,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:34,028 INFO L482 AbstractCegarLoop]: Abstraction has 1531 states and 5174 transitions. [2021-06-05 06:39:34,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:34,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 5174 transitions. [2021-06-05 06:39:34,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:34,030 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:34,030 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:34,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1168,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:34,230 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:34,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1309104231, now seen corresponding path program 17 times [2021-06-05 06:39:34,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:34,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838253633] [2021-06-05 06:39:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:34,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:34,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838253633] [2021-06-05 06:39:34,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838253633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:34,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794343783] [2021-06-05 06:39:34,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:34,487 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:39:34,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:34,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:39:34,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:34,781 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-06-05 06:39:34,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,875 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:34,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:39:34,878 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:35,186 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2021-06-05 06:39:35,186 INFO L628 ElimStorePlain]: treesize reduction 116, result has 75.0 percent of original size [2021-06-05 06:39:35,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:35,201 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:35,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:39:35,202 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:35,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:35,214 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:35,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:35,215 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:35,440 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2021-06-05 06:39:35,440 INFO L628 ElimStorePlain]: treesize reduction 20, result has 93.6 percent of original size [2021-06-05 06:39:35,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:35,452 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:35,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:39:35,456 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:35,568 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 06:39:35,569 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:35,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:35,582 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:35,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:35,586 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:35,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:35,597 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:35,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:35,599 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:35,772 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2021-06-05 06:39:35,773 INFO L628 ElimStorePlain]: treesize reduction 16, result has 93.2 percent of original size [2021-06-05 06:39:35,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:35,783 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:35,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:35,785 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:35,861 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:35,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:35,872 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:35,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:39:35,873 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:35,948 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:35,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:35,957 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:35,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:39:35,959 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:36,028 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:36,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:36,037 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:36,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:36,038 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:36,104 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:36,109 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:39:36,110 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:479, output treesize:150 [2021-06-05 06:39:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:36,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794343783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:36,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:36,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:39:36,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388808093] [2021-06-05 06:39:36,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:36,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:36,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:36,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:36,228 INFO L87 Difference]: Start difference. First operand 1531 states and 5174 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:37,414 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 06:39:37,591 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-06-05 06:39:37,888 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2021-06-05 06:39:38,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:38,375 INFO L93 Difference]: Finished difference Result 2633 states and 8507 transitions. [2021-06-05 06:39:38,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:39:38,375 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:38,378 INFO L225 Difference]: With dead ends: 2633 [2021-06-05 06:39:38,378 INFO L226 Difference]: Without dead ends: 2603 [2021-06-05 06:39:38,379 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 2108.0ms TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:39:38,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-06-05 06:39:38,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1532. [2021-06-05 06:39:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 3.3860222077073807) internal successors, (5184), 1531 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 5184 transitions. [2021-06-05 06:39:38,401 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 5184 transitions. Word has length 26 [2021-06-05 06:39:38,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:38,402 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 5184 transitions. [2021-06-05 06:39:38,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 5184 transitions. [2021-06-05 06:39:38,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:38,404 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:38,404 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:38,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1180 [2021-06-05 06:39:38,619 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:38,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:38,620 INFO L82 PathProgramCache]: Analyzing trace with hash 826223339, now seen corresponding path program 18 times [2021-06-05 06:39:38,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:38,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154298195] [2021-06-05 06:39:38,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:38,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:38,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154298195] [2021-06-05 06:39:38,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154298195] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:38,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016620272] [2021-06-05 06:39:38,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:38,877 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:39:38,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:38,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:38,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:39,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:39:39,213 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:39,218 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:39:39,224 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:39,230 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:39:39,236 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:39,242 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:39,249 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:39,256 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:39,262 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:39,269 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:39:39,274 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:39,280 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:39,286 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:39,292 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:39,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:39:39,295 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,319 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:39:39,320 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:39:39,320 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:39:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:39,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016620272] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:39,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:39,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:39:39,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389439271] [2021-06-05 06:39:39,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:39,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:39,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:39,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:39,348 INFO L87 Difference]: Start difference. First operand 1532 states and 5184 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:40,265 INFO L93 Difference]: Finished difference Result 2023 states and 6645 transitions. [2021-06-05 06:39:40,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:39:40,265 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:40,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:40,268 INFO L225 Difference]: With dead ends: 2023 [2021-06-05 06:39:40,268 INFO L226 Difference]: Without dead ends: 1998 [2021-06-05 06:39:40,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 960.4ms TimeCoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:39:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-06-05 06:39:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1567. [2021-06-05 06:39:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1566 states have (on average 3.3812260536398466) internal successors, (5295), 1566 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 5295 transitions. [2021-06-05 06:39:40,285 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 5295 transitions. Word has length 26 [2021-06-05 06:39:40,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:40,285 INFO L482 AbstractCegarLoop]: Abstraction has 1567 states and 5295 transitions. [2021-06-05 06:39:40,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 5295 transitions. [2021-06-05 06:39:40,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:40,288 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:40,288 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:40,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1208,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:40,488 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:40,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:40,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1409101781, now seen corresponding path program 19 times [2021-06-05 06:39:40,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:40,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229318364] [2021-06-05 06:39:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:40,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:40,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229318364] [2021-06-05 06:39:40,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229318364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:40,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718402667] [2021-06-05 06:39:40,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:40,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:40,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:40,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,990 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:40,991 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:40,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,000 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:41,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:41,000 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,011 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:41,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:41,012 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,023 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:41,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:39:41,024 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,034 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:41,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:41,034 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,043 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:41,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:41,044 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,052 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:41,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:41,053 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,064 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:41,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:39:41,065 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,074 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:41,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:41,075 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,085 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:41,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:41,088 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,096 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:41,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:41,097 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,104 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:41,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:41,105 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,115 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:41,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:41,116 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,125 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:41,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2021-06-05 06:39:41,125 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,134 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:41,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:39:41,137 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:41,141 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:41,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:39:41,142 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:41,230 INFO L628 ElimStorePlain]: treesize reduction 26, result has 82.8 percent of original size [2021-06-05 06:39:41,231 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:39:41,232 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:649, output treesize:91 [2021-06-05 06:39:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:41,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718402667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:41,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:41,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:41,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888267624] [2021-06-05 06:39:41,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:41,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:41,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:41,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:41,317 INFO L87 Difference]: Start difference. First operand 1567 states and 5295 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:42,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:42,129 INFO L93 Difference]: Finished difference Result 2240 states and 7336 transitions. [2021-06-05 06:39:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:39:42,129 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:42,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:42,132 INFO L225 Difference]: With dead ends: 2240 [2021-06-05 06:39:42,132 INFO L226 Difference]: Without dead ends: 2215 [2021-06-05 06:39:42,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 903.7ms TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:39:42,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2021-06-05 06:39:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1570. [2021-06-05 06:39:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1569 states have (on average 3.3817718291905674) internal successors, (5306), 1569 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 5306 transitions. [2021-06-05 06:39:42,151 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 5306 transitions. Word has length 26 [2021-06-05 06:39:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:42,151 INFO L482 AbstractCegarLoop]: Abstraction has 1570 states and 5306 transitions. [2021-06-05 06:39:42,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:42,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 5306 transitions. [2021-06-05 06:39:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:42,154 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:42,154 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:42,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1250,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:42,354 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:42,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:42,355 INFO L82 PathProgramCache]: Analyzing trace with hash 957187695, now seen corresponding path program 20 times [2021-06-05 06:39:42,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:42,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617752667] [2021-06-05 06:39:42,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:42,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:42,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617752667] [2021-06-05 06:39:42,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617752667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:42,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432798294] [2021-06-05 06:39:42,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:42,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:39:42,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:42,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:42,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:43,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,031 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:39:43,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:39:43,033 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,047 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:43,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:39:43,051 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,167 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:39:43,167 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:43,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,189 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:43,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:39:43,190 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,208 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:43,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:39:43,211 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,325 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 06:39:43,325 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:43,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,346 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:43,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:39:43,347 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,364 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:43,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:39:43,367 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,477 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 06:39:43,477 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:43,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,492 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:43,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:39:43,497 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,511 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:39:43,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:43,512 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,601 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:43,615 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:39:43,615 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:329, output treesize:220 [2021-06-05 06:39:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:43,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432798294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:43,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:43,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:39:43,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059460629] [2021-06-05 06:39:43,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:43,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:43,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:43,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:43,764 INFO L87 Difference]: Start difference. First operand 1570 states and 5306 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:44,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:44,673 INFO L93 Difference]: Finished difference Result 1853 states and 6135 transitions. [2021-06-05 06:39:44,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:39:44,673 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:44,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:44,675 INFO L225 Difference]: With dead ends: 1853 [2021-06-05 06:39:44,675 INFO L226 Difference]: Without dead ends: 1828 [2021-06-05 06:39:44,676 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1038.3ms TimeCoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:39:44,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-06-05 06:39:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1583. [2021-06-05 06:39:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.3874841972187104) internal successors, (5359), 1582 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:44,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 5359 transitions. [2021-06-05 06:39:44,693 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 5359 transitions. Word has length 26 [2021-06-05 06:39:44,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:44,693 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 5359 transitions. [2021-06-05 06:39:44,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 5359 transitions. [2021-06-05 06:39:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:44,696 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:44,696 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:44,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1301,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:44,897 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:44,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:44,897 INFO L82 PathProgramCache]: Analyzing trace with hash 423152783, now seen corresponding path program 21 times [2021-06-05 06:39:44,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:44,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252603012] [2021-06-05 06:39:44,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:45,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:45,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252603012] [2021-06-05 06:39:45,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252603012] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:45,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672876155] [2021-06-05 06:39:45,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:45,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:39:45,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:45,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:45,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:45,540 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 06:39:45,786 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_67, v_prenex_66], 3=[v_prenex_68]} [2021-06-05 06:39:45,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:39:45,791 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,916 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2021-06-05 06:39:45,916 INFO L628 ElimStorePlain]: treesize reduction 123, result has 44.1 percent of original size [2021-06-05 06:39:45,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:45,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:39:45,920 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,947 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:45,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:45,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:39:45,951 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,973 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:45,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 06:39:45,977 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,997 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:45,998 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:39:45,998 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:234, output treesize:20 [2021-06-05 06:39:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:46,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672876155] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:46,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:46,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:46,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830083113] [2021-06-05 06:39:46,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:46,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:46,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:46,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:46,025 INFO L87 Difference]: Start difference. First operand 1583 states and 5359 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:46,742 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 06:39:46,959 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-06-05 06:39:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:47,175 INFO L93 Difference]: Finished difference Result 2166 states and 7091 transitions. [2021-06-05 06:39:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:39:47,175 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:47,178 INFO L225 Difference]: With dead ends: 2166 [2021-06-05 06:39:47,178 INFO L226 Difference]: Without dead ends: 2121 [2021-06-05 06:39:47,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1330.8ms TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:39:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2021-06-05 06:39:47,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1613. [2021-06-05 06:39:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 3.3957816377171217) internal successors, (5474), 1612 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 5474 transitions. [2021-06-05 06:39:47,198 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 5474 transitions. Word has length 26 [2021-06-05 06:39:47,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:47,198 INFO L482 AbstractCegarLoop]: Abstraction has 1613 states and 5474 transitions. [2021-06-05 06:39:47,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:47,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 5474 transitions. [2021-06-05 06:39:47,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:47,200 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:47,200 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:47,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1361,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:47,401 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:47,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:47,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1194379997, now seen corresponding path program 22 times [2021-06-05 06:39:47,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:47,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052783318] [2021-06-05 06:39:47,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:47,700 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2021-06-05 06:39:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:47,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:47,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052783318] [2021-06-05 06:39:47,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052783318] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:47,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429152920] [2021-06-05 06:39:47,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:47,778 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:39:47,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:47,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:47,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:48,074 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 06:39:48,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,170 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:48,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:39:48,171 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:48,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:39:48,184 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,523 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2021-06-05 06:39:48,523 INFO L628 ElimStorePlain]: treesize reduction 69, result has 84.4 percent of original size [2021-06-05 06:39:48,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,536 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:48,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:48,546 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,678 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:39:48,678 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:48,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,693 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:48,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:48,697 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,709 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:48,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:48,711 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,929 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2021-06-05 06:39:48,929 INFO L628 ElimStorePlain]: treesize reduction 18, result has 94.4 percent of original size [2021-06-05 06:39:48,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,941 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:48,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:39:48,942 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:49,050 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 06:39:49,050 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:49,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:49,065 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:49,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:39:49,069 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:49,165 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:49,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:49,176 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:49,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:49,178 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:49,271 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:49,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:49,281 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:49,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:39:49,284 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:49,371 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:49,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:49,384 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:49,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:49,385 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:49,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:49,393 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:49,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:39:49,394 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:49,460 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:49,466 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:39:49,467 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:503, output treesize:150 [2021-06-05 06:39:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:49,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429152920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:49,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:49,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:49,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420151156] [2021-06-05 06:39:49,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:49,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:49,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:49,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:49,588 INFO L87 Difference]: Start difference. First operand 1613 states and 5474 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:50,390 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:39:50,538 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 06:39:50,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:50,715 INFO L93 Difference]: Finished difference Result 2386 states and 7813 transitions. [2021-06-05 06:39:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:39:50,716 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:50,719 INFO L225 Difference]: With dead ends: 2386 [2021-06-05 06:39:50,719 INFO L226 Difference]: Without dead ends: 2352 [2021-06-05 06:39:50,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1445.2ms TimeCoverageRelationStatistics Valid=239, Invalid=883, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:39:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-06-05 06:39:50,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 1599. [2021-06-05 06:39:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.392991239048811) internal successors, (5422), 1598 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 5422 transitions. [2021-06-05 06:39:50,739 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 5422 transitions. Word has length 26 [2021-06-05 06:39:50,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:50,739 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 5422 transitions. [2021-06-05 06:39:50,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:50,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 5422 transitions. [2021-06-05 06:39:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:50,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:50,741 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:50,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1375 [2021-06-05 06:39:50,942 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:50,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:50,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1410644395, now seen corresponding path program 23 times [2021-06-05 06:39:50,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:50,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858467580] [2021-06-05 06:39:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:51,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:51,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858467580] [2021-06-05 06:39:51,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858467580] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:51,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967161258] [2021-06-05 06:39:51,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 06:39:51,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:39:51,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:51,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:51,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:51,689 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-05 06:39:51,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:51,835 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:51,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:39:51,836 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:51,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:51,848 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:51,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:39:51,849 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,153 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-05 06:39:52,154 INFO L628 ElimStorePlain]: treesize reduction 10, result has 97.2 percent of original size [2021-06-05 06:39:52,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,167 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:52,170 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,181 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:52,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:39:52,182 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,313 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 06:39:52,313 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,325 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:52,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:39:52,326 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,335 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:39:52,338 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,461 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 06:39:52,461 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,473 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:39:52,477 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,487 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:52,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:39:52,488 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,596 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 06:39:52,596 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,607 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:39:52,611 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:52,619 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:52,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:39:52,621 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:52,711 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:52,716 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:39:52,716 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:391, output treesize:170 [2021-06-05 06:39:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:52,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967161258] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:52,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:52,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:39:52,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456589035] [2021-06-05 06:39:52,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:52,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:52,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:52,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:52,856 INFO L87 Difference]: Start difference. First operand 1599 states and 5422 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:53,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:53,766 INFO L93 Difference]: Finished difference Result 2115 states and 7008 transitions. [2021-06-05 06:39:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:39:53,766 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:53,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:53,769 INFO L225 Difference]: With dead ends: 2115 [2021-06-05 06:39:53,769 INFO L226 Difference]: Without dead ends: 2090 [2021-06-05 06:39:53,769 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1261.2ms TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:39:53,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-06-05 06:39:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1599. [2021-06-05 06:39:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.392991239048811) internal successors, (5422), 1598 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 5422 transitions. [2021-06-05 06:39:53,787 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 5422 transitions. Word has length 26 [2021-06-05 06:39:53,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:53,788 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 5422 transitions. [2021-06-05 06:39:53,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:53,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 5422 transitions. [2021-06-05 06:39:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:53,789 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:53,790 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:53,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1404,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:53,990 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:53,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1510554133, now seen corresponding path program 42 times [2021-06-05 06:39:53,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:53,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960024965] [2021-06-05 06:39:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:54,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:54,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960024965] [2021-06-05 06:39:54,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960024965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:54,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72872579] [2021-06-05 06:39:54,188 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:54,212 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:39:54,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:54,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:54,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:54,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:39:54,647 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:39:54,654 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:39:54,661 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:39:54,668 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:39:54,675 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:39:54,682 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:39:54,689 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:54,695 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:39:54,702 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:39:54,709 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:39:54,717 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:39:54,725 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:39:54,731 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:39:54,741 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:54,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:39:54,744 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,763 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:39:54,764 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:39:54,764 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:39:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:54,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72872579] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:54,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:54,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:39:54,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693701011] [2021-06-05 06:39:54,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:54,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:54,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:54,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:54,785 INFO L87 Difference]: Start difference. First operand 1599 states and 5422 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:55,975 INFO L93 Difference]: Finished difference Result 2060 states and 6796 transitions. [2021-06-05 06:39:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:39:55,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:55,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:55,978 INFO L225 Difference]: With dead ends: 2060 [2021-06-05 06:39:55,978 INFO L226 Difference]: Without dead ends: 2034 [2021-06-05 06:39:55,978 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1228.5ms TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:39:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2021-06-05 06:39:55,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1603. [2021-06-05 06:39:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 3.3907615480649187) internal successors, (5432), 1602 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:55,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 5432 transitions. [2021-06-05 06:39:55,996 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 5432 transitions. Word has length 26 [2021-06-05 06:39:55,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:55,996 INFO L482 AbstractCegarLoop]: Abstraction has 1603 states and 5432 transitions. [2021-06-05 06:39:55,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:55,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 5432 transitions. [2021-06-05 06:39:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:55,998 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:55,998 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:56,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1441 [2021-06-05 06:39:56,202 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:56,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:56,202 INFO L82 PathProgramCache]: Analyzing trace with hash -442679569, now seen corresponding path program 43 times [2021-06-05 06:39:56,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:56,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255924206] [2021-06-05 06:39:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:56,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:56,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255924206] [2021-06-05 06:39:56,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255924206] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:56,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091169221] [2021-06-05 06:39:56,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:56,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:56,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:56,790 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_92, v_prenex_96], 5=[v_prenex_94, A]} [2021-06-05 06:39:56,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:56,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:56,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-05 06:39:56,797 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:56,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2021-06-05 06:39:56,802 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,896 INFO L628 ElimStorePlain]: treesize reduction 133, result has 45.9 percent of original size [2021-06-05 06:39:56,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:56,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:39:56,902 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,928 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:56,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:56,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-05 06:39:56,933 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:56,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:56,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:56,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 06:39:56,959 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:56,979 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:56,982 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:39:56,982 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:303, output treesize:29 [2021-06-05 06:39:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:57,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091169221] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:57,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:57,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:39:57,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071392593] [2021-06-05 06:39:57,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:57,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:57,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:57,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:57,019 INFO L87 Difference]: Start difference. First operand 1603 states and 5432 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:58,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:58,334 INFO L93 Difference]: Finished difference Result 2261 states and 7446 transitions. [2021-06-05 06:39:58,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:39:58,335 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:39:58,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:58,338 INFO L225 Difference]: With dead ends: 2261 [2021-06-05 06:39:58,338 INFO L226 Difference]: Without dead ends: 2246 [2021-06-05 06:39:58,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 1361.1ms TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:39:58,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-06-05 06:39:58,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 1603. [2021-06-05 06:39:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 3.3907615480649187) internal successors, (5432), 1602 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 5432 transitions. [2021-06-05 06:39:58,357 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 5432 transitions. Word has length 26 [2021-06-05 06:39:58,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:58,357 INFO L482 AbstractCegarLoop]: Abstraction has 1603 states and 5432 transitions. [2021-06-05 06:39:58,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:58,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 5432 transitions. [2021-06-05 06:39:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:58,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:58,359 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:39:58,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1531 [2021-06-05 06:39:58,560 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:58,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:58,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1031054993, now seen corresponding path program 24 times [2021-06-05 06:39:58,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:58,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648411100] [2021-06-05 06:39:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:58,800 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-06-05 06:39:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:39:58,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:58,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648411100] [2021-06-05 06:39:58,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648411100] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:58,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297972164] [2021-06-05 06:39:58,901 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:58,939 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:39:58,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:58,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:58,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:59,245 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 06:39:59,747 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:59,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:39:59,751 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,086 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2021-06-05 06:40:00,086 INFO L628 ElimStorePlain]: treesize reduction 126, result has 75.9 percent of original size [2021-06-05 06:40:00,107 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:00,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:40:00,111 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,260 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:40:00,260 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:00,278 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:00,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:40:00,280 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,421 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 06:40:00,421 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:00,439 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:00,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:40:00,441 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,579 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:40:00,579 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:00,593 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:00,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:40:00,598 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,728 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 06:40:00,728 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:00,746 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:00,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:40:00,748 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,757 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:00,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:40:00,758 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,985 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2021-06-05 06:40:00,985 INFO L628 ElimStorePlain]: treesize reduction 21, result has 93.4 percent of original size [2021-06-05 06:40:01,002 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:01,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:40:01,005 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:01,014 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:01,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:40:01,014 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:01,112 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:01,130 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:01,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:40:01,132 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:01,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:01,240 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:40:01,240 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:539, output treesize:402 [2021-06-05 06:40:01,437 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-06-05 06:40:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:01,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297972164] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:01,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:01,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:40:01,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530399109] [2021-06-05 06:40:01,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:40:01,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:01,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:40:01,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:40:01,539 INFO L87 Difference]: Start difference. First operand 1603 states and 5432 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:02,235 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2021-06-05 06:40:02,832 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-06-05 06:40:02,991 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 35 [2021-06-05 06:40:03,220 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-06-05 06:40:03,493 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-05 06:40:03,666 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-06-05 06:40:04,025 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2021-06-05 06:40:04,377 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-06-05 06:40:04,775 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2021-06-05 06:40:05,192 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2021-06-05 06:40:05,810 WARN L205 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2021-06-05 06:40:06,042 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2021-06-05 06:40:06,739 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2021-06-05 06:40:07,145 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 28 [2021-06-05 06:40:07,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:07,375 INFO L93 Difference]: Finished difference Result 2594 states and 8222 transitions. [2021-06-05 06:40:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:40:07,375 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:40:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:07,379 INFO L225 Difference]: With dead ends: 2594 [2021-06-05 06:40:07,379 INFO L226 Difference]: Without dead ends: 2530 [2021-06-05 06:40:07,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 5875.0ms TimeCoverageRelationStatistics Valid=469, Invalid=2183, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:40:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-06-05 06:40:07,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 1635. [2021-06-05 06:40:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 3.401468788249694) internal successors, (5558), 1634 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 5558 transitions. [2021-06-05 06:40:07,420 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 5558 transitions. Word has length 26 [2021-06-05 06:40:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:07,421 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 5558 transitions. [2021-06-05 06:40:07,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 5558 transitions. [2021-06-05 06:40:07,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:07,423 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:07,423 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:07,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1545,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:07,623 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:07,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:07,624 INFO L82 PathProgramCache]: Analyzing trace with hash 519326571, now seen corresponding path program 44 times [2021-06-05 06:40:07,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:07,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481659150] [2021-06-05 06:40:07,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:08,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:08,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481659150] [2021-06-05 06:40:08,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481659150] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:08,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106393253] [2021-06-05 06:40:08,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:08,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:40:08,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:08,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:40:08,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:08,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,726 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:08,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 45 [2021-06-05 06:40:08,731 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,756 INFO L354 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2021-06-05 06:40:08,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2021-06-05 06:40:08,761 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,778 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:08,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:40:08,779 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,796 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:08,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:40:08,797 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,821 INFO L354 Elim1Store]: treesize reduction 19, result has 29.6 percent of original size [2021-06-05 06:40:08,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 26 [2021-06-05 06:40:08,823 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,844 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:08,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-06-05 06:40:08,850 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,878 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 06:40:08,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:40:08,880 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,899 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:08,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:40:08,900 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,924 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:40:08,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:40:08,929 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,943 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:08,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:40:08,944 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,958 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:08,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:40:08,959 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,975 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:08,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:40:08,976 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,989 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:08,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 06:40:08,990 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:08,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:08,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:09,004 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:09,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:40:09,010 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:09,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:09,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:09,025 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:09,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:40:09,025 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:09,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:09,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:09,034 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:09,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:40:09,034 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:09,113 INFO L628 ElimStorePlain]: treesize reduction 56, result has 61.4 percent of original size [2021-06-05 06:40:09,116 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:40:09,116 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:745, output treesize:71 [2021-06-05 06:40:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:09,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106393253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:09,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:09,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-06-05 06:40:09,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126237021] [2021-06-05 06:40:09,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 06:40:09,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:09,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 06:40:09,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:40:09,192 INFO L87 Difference]: Start difference. First operand 1635 states and 5558 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:11,563 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2021-06-05 06:40:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:12,339 INFO L93 Difference]: Finished difference Result 2662 states and 8486 transitions. [2021-06-05 06:40:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:40:12,340 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:40:12,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:12,343 INFO L225 Difference]: With dead ends: 2662 [2021-06-05 06:40:12,343 INFO L226 Difference]: Without dead ends: 2618 [2021-06-05 06:40:12,344 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 2995.2ms TimeCoverageRelationStatistics Valid=692, Invalid=3598, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 06:40:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2021-06-05 06:40:12,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 1642. [2021-06-05 06:40:12,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1641 states have (on average 3.4021937842778796) internal successors, (5583), 1641 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 5583 transitions. [2021-06-05 06:40:12,367 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 5583 transitions. Word has length 26 [2021-06-05 06:40:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:12,367 INFO L482 AbstractCegarLoop]: Abstraction has 1642 states and 5583 transitions. [2021-06-05 06:40:12,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 5583 transitions. [2021-06-05 06:40:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:12,369 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:12,369 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:12,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1623 [2021-06-05 06:40:12,570 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:12,570 INFO L82 PathProgramCache]: Analyzing trace with hash -456992273, now seen corresponding path program 45 times [2021-06-05 06:40:12,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:12,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104503106] [2021-06-05 06:40:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:12,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:12,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104503106] [2021-06-05 06:40:12,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104503106] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:12,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715535526] [2021-06-05 06:40:12,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:12,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:40:12,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:12,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:40:12,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:13,695 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:40:13,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 06:40:13,704 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,736 INFO L354 Elim1Store]: treesize reduction 25, result has 39.0 percent of original size [2021-06-05 06:40:13,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 34 [2021-06-05 06:40:13,738 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,768 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-05 06:40:13,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 30 [2021-06-05 06:40:13,769 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,799 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-05 06:40:13,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 30 [2021-06-05 06:40:13,800 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,830 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-05 06:40:13,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 30 [2021-06-05 06:40:13,831 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,848 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:40:13,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:40:13,849 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,903 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:40:13,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 40 [2021-06-05 06:40:13,908 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,945 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:40:13,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-05 06:40:13,951 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,003 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:40:14,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 45 [2021-06-05 06:40:14,015 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,034 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:40:14,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 06:40:14,034 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,052 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:40:14,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:40:14,053 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,069 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:40:14,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 06:40:14,070 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,116 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:40:14,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 40 [2021-06-05 06:40:14,121 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,154 INFO L354 Elim1Store]: treesize reduction 26, result has 36.6 percent of original size [2021-06-05 06:40:14,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 33 [2021-06-05 06:40:14,156 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,178 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:40:14,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:40:14,179 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,221 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:40:14,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-05 06:40:14,229 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,511 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-06-05 06:40:14,512 INFO L628 ElimStorePlain]: treesize reduction 92, result has 77.5 percent of original size [2021-06-05 06:40:14,518 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 06:40:14,518 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:833, output treesize:358 [2021-06-05 06:40:14,751 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-05 06:40:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:14,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715535526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:14,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:14,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-05 06:40:14,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451015052] [2021-06-05 06:40:14,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 06:40:14,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:14,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 06:40:14,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:40:14,856 INFO L87 Difference]: Start difference. First operand 1642 states and 5583 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:16,527 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2021-06-05 06:40:17,339 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-06-05 06:40:17,475 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-06-05 06:40:17,753 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2021-06-05 06:40:17,915 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-06-05 06:40:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:18,100 INFO L93 Difference]: Finished difference Result 3238 states and 10236 transitions. [2021-06-05 06:40:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:40:18,100 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:40:18,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:18,105 INFO L225 Difference]: With dead ends: 3238 [2021-06-05 06:40:18,105 INFO L226 Difference]: Without dead ends: 3208 [2021-06-05 06:40:18,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 3305.6ms TimeCoverageRelationStatistics Valid=689, Invalid=3733, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:40:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-06-05 06:40:18,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 1691. [2021-06-05 06:40:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1690 states have (on average 3.4005917159763315) internal successors, (5747), 1690 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 5747 transitions. [2021-06-05 06:40:18,130 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 5747 transitions. Word has length 26 [2021-06-05 06:40:18,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:18,130 INFO L482 AbstractCegarLoop]: Abstraction has 1691 states and 5747 transitions. [2021-06-05 06:40:18,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 5747 transitions. [2021-06-05 06:40:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:18,132 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:18,132 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:18,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1727,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:18,337 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:18,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:18,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1125767463, now seen corresponding path program 25 times [2021-06-05 06:40:18,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:18,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524318201] [2021-06-05 06:40:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:18,608 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-06-05 06:40:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:18,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:18,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524318201] [2021-06-05 06:40:18,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524318201] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:18,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95703833] [2021-06-05 06:40:18,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:18,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:40:18,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:18,988 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-06-05 06:40:19,190 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_134, v_prenex_135]} [2021-06-05 06:40:19,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:19,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:40:19,194 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:19,289 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-05 06:40:19,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:19,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:19,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:40:19,294 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:19,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:19,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:19,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:19,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:40:19,319 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:19,337 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:19,338 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 06:40:19,338 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:22 [2021-06-05 06:40:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:19,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95703833] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:19,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:19,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:40:19,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191782512] [2021-06-05 06:40:19,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:40:19,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:19,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:40:19,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:40:19,371 INFO L87 Difference]: Start difference. First operand 1691 states and 5747 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:20,251 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-05 06:40:20,370 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 06:40:20,553 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-05 06:40:20,731 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-06-05 06:40:20,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:20,954 INFO L93 Difference]: Finished difference Result 2561 states and 8224 transitions. [2021-06-05 06:40:20,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:40:20,954 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:40:20,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:20,958 INFO L225 Difference]: With dead ends: 2561 [2021-06-05 06:40:20,958 INFO L226 Difference]: Without dead ends: 2516 [2021-06-05 06:40:20,958 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1772.8ms TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:40:20,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2021-06-05 06:40:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1720. [2021-06-05 06:40:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1719 states have (on average 3.414194299011053) internal successors, (5869), 1719 states have internal predecessors, (5869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 5869 transitions. [2021-06-05 06:40:20,982 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 5869 transitions. Word has length 26 [2021-06-05 06:40:20,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:20,982 INFO L482 AbstractCegarLoop]: Abstraction has 1720 states and 5869 transitions. [2021-06-05 06:40:20,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:20,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 5869 transitions. [2021-06-05 06:40:20,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:20,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:20,984 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:21,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1860 [2021-06-05 06:40:21,200 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:21,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:21,200 INFO L82 PathProgramCache]: Analyzing trace with hash -491765317, now seen corresponding path program 26 times [2021-06-05 06:40:21,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:21,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234359362] [2021-06-05 06:40:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:21,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:21,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234359362] [2021-06-05 06:40:21,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234359362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:21,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46420302] [2021-06-05 06:40:21,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:21,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:40:21,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:21,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:40:21,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:21,809 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:40:21,947 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:21,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:40:21,953 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:22,282 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2021-06-05 06:40:22,282 INFO L628 ElimStorePlain]: treesize reduction 130, result has 76.3 percent of original size [2021-06-05 06:40:22,303 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:22,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:40:22,305 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:22,316 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:22,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:40:22,317 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:22,602 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2021-06-05 06:40:22,603 INFO L628 ElimStorePlain]: treesize reduction 23, result has 94.1 percent of original size [2021-06-05 06:40:22,622 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:22,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:40:22,625 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:22,635 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:22,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:40:22,636 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:22,749 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-06-05 06:40:22,750 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:22,771 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:22,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:40:22,775 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:22,895 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 06:40:22,895 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:22,912 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:22,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:40:22,914 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:23,028 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:40:23,029 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:23,049 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:23,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:40:23,051 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:23,164 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 06:40:23,164 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:23,197 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:23,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:40:23,199 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:23,301 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 06:40:23,301 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:23,318 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:23,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:40:23,321 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:23,420 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:23,433 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:40:23,433 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:350 [2021-06-05 06:40:23,561 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-06-05 06:40:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:23,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46420302] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:23,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:23,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:40:23,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432878909] [2021-06-05 06:40:23,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:40:23,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:23,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:40:23,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:40:23,711 INFO L87 Difference]: Start difference. First operand 1720 states and 5869 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:24,817 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-06-05 06:40:24,940 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2021-06-05 06:40:25,420 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-06-05 06:40:25,619 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-05 06:40:25,975 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-05 06:40:26,402 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2021-06-05 06:40:26,614 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 06:40:26,994 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2021-06-05 06:40:27,560 WARN L205 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2021-06-05 06:40:28,026 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2021-06-05 06:40:28,542 WARN L205 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2021-06-05 06:40:29,129 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2021-06-05 06:40:29,832 WARN L205 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 101 [2021-06-05 06:40:30,373 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2021-06-05 06:40:31,147 WARN L205 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2021-06-05 06:40:31,307 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2021-06-05 06:40:31,857 WARN L205 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 87 [2021-06-05 06:40:32,484 WARN L205 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 95 [2021-06-05 06:40:32,918 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2021-06-05 06:40:32,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:32,999 INFO L93 Difference]: Finished difference Result 3224 states and 10085 transitions. [2021-06-05 06:40:32,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:40:33,000 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:40:33,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:33,004 INFO L225 Difference]: With dead ends: 3224 [2021-06-05 06:40:33,004 INFO L226 Difference]: Without dead ends: 3167 [2021-06-05 06:40:33,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 9103.8ms TimeCoverageRelationStatistics Valid=578, Invalid=2614, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:40:33,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2021-06-05 06:40:33,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 1704. [2021-06-05 06:40:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 3.405754550792719) internal successors, (5800), 1703 states have internal predecessors, (5800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 5800 transitions. [2021-06-05 06:40:33,029 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 5800 transitions. Word has length 26 [2021-06-05 06:40:33,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:33,029 INFO L482 AbstractCegarLoop]: Abstraction has 1704 states and 5800 transitions. [2021-06-05 06:40:33,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:33,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 5800 transitions. [2021-06-05 06:40:33,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:33,031 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:33,031 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:33,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1872 [2021-06-05 06:40:33,233 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:33,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:33,233 INFO L82 PathProgramCache]: Analyzing trace with hash 745320095, now seen corresponding path program 46 times [2021-06-05 06:40:33,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:33,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511280581] [2021-06-05 06:40:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:33,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:33,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511280581] [2021-06-05 06:40:33,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511280581] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:33,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396858566] [2021-06-05 06:40:33,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:33,500 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:33,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:33,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:40:33,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:34,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:40:34,019 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:40:34,026 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:40:34,033 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:40:34,040 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:40:34,047 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:40:34,055 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:40:34,063 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:40:34,070 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:40:34,077 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:40:34,085 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:40:34,092 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:40:34,099 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:40:34,106 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:40:34,112 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:34,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:34,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:40:34,116 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:34,131 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:40:34,132 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:40:34,132 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:40:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:34,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396858566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:34,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:34,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:40:34,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214374937] [2021-06-05 06:40:34,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:40:34,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:34,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:40:34,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:40:34,157 INFO L87 Difference]: Start difference. First operand 1704 states and 5800 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:35,805 INFO L93 Difference]: Finished difference Result 3325 states and 10680 transitions. [2021-06-05 06:40:35,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 06:40:35,806 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:40:35,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:35,810 INFO L225 Difference]: With dead ends: 3325 [2021-06-05 06:40:35,810 INFO L226 Difference]: Without dead ends: 3289 [2021-06-05 06:40:35,811 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1587.2ms TimeCoverageRelationStatistics Valid=497, Invalid=2259, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:40:35,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-06-05 06:40:35,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 1811. [2021-06-05 06:40:35,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 3.422099447513812) internal successors, (6194), 1810 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 6194 transitions. [2021-06-05 06:40:35,857 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 6194 transitions. Word has length 26 [2021-06-05 06:40:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:35,857 INFO L482 AbstractCegarLoop]: Abstraction has 1811 states and 6194 transitions. [2021-06-05 06:40:35,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 6194 transitions. [2021-06-05 06:40:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:35,859 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:35,859 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:36,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1908 [2021-06-05 06:40:36,070 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:36,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:36,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1715998549, now seen corresponding path program 47 times [2021-06-05 06:40:36,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:36,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337508526] [2021-06-05 06:40:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:36,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:36,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337508526] [2021-06-05 06:40:36,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337508526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:36,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499543481] [2021-06-05 06:40:36,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:36,311 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:40:36,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:36,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:40:36,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:36,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,747 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:40:36,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 06:40:36,751 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,765 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:36,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:40:36,766 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,780 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:36,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:40:36,780 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,794 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:36,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:40:36,795 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,826 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:40:36,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 25 [2021-06-05 06:40:36,828 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,854 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:40:36,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:40:36,858 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,872 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:36,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:40:36,872 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,893 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:36,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-05 06:40:36,899 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,928 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:36,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:40:36,929 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,951 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:40:36,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-05 06:40:36,953 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,967 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:36,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 06:40:36,968 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,983 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:36,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:40:36,983 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:36,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:36,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:37,000 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:37,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:40:37,001 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:37,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:37,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:37,015 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:37,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:40:37,015 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:37,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:37,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:37,037 INFO L354 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2021-06-05 06:40:37,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 23 [2021-06-05 06:40:37,039 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:37,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:37,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:37,047 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:37,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:40:37,048 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:37,123 INFO L628 ElimStorePlain]: treesize reduction 24, result has 79.5 percent of original size [2021-06-05 06:40:37,125 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:40:37,125 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:75 [2021-06-05 06:40:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:37,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499543481] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:37,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:37,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:40:37,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951603452] [2021-06-05 06:40:37,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:40:37,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:37,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:40:37,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:40:37,200 INFO L87 Difference]: Start difference. First operand 1811 states and 6194 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:39,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:39,542 INFO L93 Difference]: Finished difference Result 3806 states and 12114 transitions. [2021-06-05 06:40:39,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:40:39,543 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:40:39,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:39,548 INFO L225 Difference]: With dead ends: 3806 [2021-06-05 06:40:39,548 INFO L226 Difference]: Without dead ends: 3749 [2021-06-05 06:40:39,548 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 2147.3ms TimeCoverageRelationStatistics Valid=649, Invalid=2657, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:40:39,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2021-06-05 06:40:39,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 1846. [2021-06-05 06:40:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 3.430894308943089) internal successors, (6330), 1845 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:39,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 6330 transitions. [2021-06-05 06:40:39,577 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 6330 transitions. Word has length 26 [2021-06-05 06:40:39,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:39,578 INFO L482 AbstractCegarLoop]: Abstraction has 1846 states and 6330 transitions. [2021-06-05 06:40:39,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:39,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 6330 transitions. [2021-06-05 06:40:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:39,580 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:39,580 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:39,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1998,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:39,789 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:39,789 INFO L82 PathProgramCache]: Analyzing trace with hash 701456227, now seen corresponding path program 27 times [2021-06-05 06:40:39,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:39,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083051655] [2021-06-05 06:40:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:40,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:40,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083051655] [2021-06-05 06:40:40,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083051655] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:40,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496616218] [2021-06-05 06:40:40,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:40,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:40:40,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:40,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:40:40,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:40,513 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:40:40,718 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 06:40:40,889 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:40,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 06:40:40,892 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:40,904 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:40,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:40:40,904 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,217 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 126 [2021-06-05 06:40:41,217 INFO L628 ElimStorePlain]: treesize reduction 120, result has 76.0 percent of original size [2021-06-05 06:40:41,244 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:41,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:40:41,245 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,388 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 06:40:41,388 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:41,413 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:41,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:40:41,417 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,554 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 06:40:41,555 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:41,573 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:41,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:40:41,574 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,705 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:40:41,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:41,724 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:41,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:40:41,726 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,735 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:41,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:40:41,736 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,959 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2021-06-05 06:40:41,959 INFO L628 ElimStorePlain]: treesize reduction 23, result has 92.7 percent of original size [2021-06-05 06:40:41,973 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:41,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:40:41,978 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:42,079 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:40:42,080 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:42,095 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:42,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:40:42,097 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:42,199 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:40:42,199 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:42,216 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:42,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:40:42,219 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:42,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:42,327 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:40:42,327 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:347 [2021-06-05 06:40:42,490 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2021-06-05 06:40:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:42,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496616218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:42,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:42,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:40:42,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743150683] [2021-06-05 06:40:42,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:40:42,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:42,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:40:42,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:40:42,536 INFO L87 Difference]: Start difference. First operand 1846 states and 6330 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:43,698 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-06-05 06:40:43,911 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:40:44,110 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 06:40:44,379 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 06:40:44,867 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 121 [2021-06-05 06:40:45,264 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2021-06-05 06:40:45,836 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 113 [2021-06-05 06:40:46,514 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 139 [2021-06-05 06:40:47,058 WARN L205 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 116 [2021-06-05 06:40:47,302 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 79 [2021-06-05 06:40:48,217 WARN L205 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 133 [2021-06-05 06:40:48,649 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 81 [2021-06-05 06:40:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:48,896 INFO L93 Difference]: Finished difference Result 2649 states and 8646 transitions. [2021-06-05 06:40:48,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 06:40:48,896 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:40:48,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:48,900 INFO L225 Difference]: With dead ends: 2649 [2021-06-05 06:40:48,900 INFO L226 Difference]: Without dead ends: 2604 [2021-06-05 06:40:48,900 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 6192.8ms TimeCoverageRelationStatistics Valid=351, Invalid=2001, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:40:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-06-05 06:40:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1868. [2021-06-05 06:40:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 3.430637386181039) internal successors, (6405), 1867 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 6405 transitions. [2021-06-05 06:40:48,923 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 6405 transitions. Word has length 26 [2021-06-05 06:40:48,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:48,923 INFO L482 AbstractCegarLoop]: Abstraction has 1868 states and 6405 transitions. [2021-06-05 06:40:48,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:48,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 6405 transitions. [2021-06-05 06:40:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:48,925 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:48,925 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:49,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2103 [2021-06-05 06:40:49,126 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:49,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:49,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1121995759, now seen corresponding path program 28 times [2021-06-05 06:40:49,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:49,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650535705] [2021-06-05 06:40:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:49,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:49,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650535705] [2021-06-05 06:40:49,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650535705] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:49,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019854591] [2021-06-05 06:40:49,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:49,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:49,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:49,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:40:49,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:49,734 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2021-06-05 06:40:49,838 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_174, v_prenex_175, v_prenex_176, v_prenex_177], 3=[A]} [2021-06-05 06:40:49,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:49,852 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:49,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:40:49,853 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:49,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:49,864 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:49,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:40:49,867 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:50,157 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2021-06-05 06:40:50,158 INFO L628 ElimStorePlain]: treesize reduction 24, result has 93.7 percent of original size [2021-06-05 06:40:50,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:50,171 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:50,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:40:50,172 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:50,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:50,183 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:50,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:40:50,184 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:50,317 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 06:40:50,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:50,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:50,330 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:50,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:40:50,332 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:50,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:50,341 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:50,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:40:50,345 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:50,471 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:40:50,471 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:50,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:50,483 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:50,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:40:50,486 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:50,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:50,495 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:50,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:40:50,496 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:50,601 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 06:40:50,602 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:50,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:50,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:50,612 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:50,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 06:40:50,616 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:50,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:50,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:50,624 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:40:50,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 06:40:50,626 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:50,723 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:50,729 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:40:50,729 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:421, output treesize:185 [2021-06-05 06:40:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:50,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019854591] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:50,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:50,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:40:50,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258065783] [2021-06-05 06:40:50,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:40:50,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:50,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:40:50,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:40:50,851 INFO L87 Difference]: Start difference. First operand 1868 states and 6405 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:51,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:51,976 INFO L93 Difference]: Finished difference Result 2435 states and 8167 transitions. [2021-06-05 06:40:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:40:51,977 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:40:51,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:51,980 INFO L225 Difference]: With dead ends: 2435 [2021-06-05 06:40:51,980 INFO L226 Difference]: Without dead ends: 2410 [2021-06-05 06:40:51,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1353.5ms TimeCoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:40:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-06-05 06:40:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 1870. [2021-06-05 06:40:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 3.42964151952916) internal successors, (6410), 1869 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 6410 transitions. [2021-06-05 06:40:52,002 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 6410 transitions. Word has length 26 [2021-06-05 06:40:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:52,002 INFO L482 AbstractCegarLoop]: Abstraction has 1870 states and 6410 transitions. [2021-06-05 06:40:52,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 6410 transitions. [2021-06-05 06:40:52,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:52,004 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:52,004 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:52,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2140,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:52,205 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:52,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:52,206 INFO L82 PathProgramCache]: Analyzing trace with hash 654380625, now seen corresponding path program 29 times [2021-06-05 06:40:52,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:52,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352627540] [2021-06-05 06:40:52,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:52,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:52,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352627540] [2021-06-05 06:40:52,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352627540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:52,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227739724] [2021-06-05 06:40:52,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:52,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:40:52,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:52,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:40:52,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:53,112 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 06:40:53,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:53,205 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:40:53,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:40:53,207 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:53,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:53,219 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:53,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:40:53,221 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:53,564 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 125 [2021-06-05 06:40:53,564 INFO L628 ElimStorePlain]: treesize reduction 72, result has 84.8 percent of original size [2021-06-05 06:40:53,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:53,579 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:53,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:40:53,582 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:53,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:53,592 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:40:53,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:40:53,592 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:53,855 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2021-06-05 06:40:53,855 INFO L628 ElimStorePlain]: treesize reduction 21, result has 94.2 percent of original size [2021-06-05 06:40:53,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:53,868 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:53,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:40:53,869 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:53,991 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:40:53,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:53,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,004 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:54,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:40:54,005 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,130 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:40:54,130 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,142 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:40:54,145 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,264 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 06:40:54,264 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,276 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:54,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:40:54,277 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,395 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 06:40:54,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,405 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:40:54,408 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,512 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 06:40:54,512 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,524 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:40:54,525 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,533 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:40:54,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:40:54,534 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,612 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,619 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:40:54,620 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:539, output treesize:156 [2021-06-05 06:40:54,758 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-06-05 06:40:54,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:54,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227739724] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:54,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:54,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:40:54,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341526268] [2021-06-05 06:40:54,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:40:54,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:54,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:40:54,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:40:54,795 INFO L87 Difference]: Start difference. First operand 1870 states and 6410 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:55,650 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-06-05 06:40:56,031 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 06:40:56,280 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 06:40:56,484 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-05 06:40:56,720 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 06:40:56,933 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:40:57,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:57,137 INFO L93 Difference]: Finished difference Result 2744 states and 8990 transitions. [2021-06-05 06:40:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:40:57,137 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:40:57,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:57,141 INFO L225 Difference]: With dead ends: 2744 [2021-06-05 06:40:57,141 INFO L226 Difference]: Without dead ends: 2710 [2021-06-05 06:40:57,141 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2720.2ms TimeCoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:40:57,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2021-06-05 06:40:57,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 1870. [2021-06-05 06:40:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 3.4307116104868913) internal successors, (6412), 1869 states have internal predecessors, (6412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 6412 transitions. [2021-06-05 06:40:57,167 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 6412 transitions. Word has length 26 [2021-06-05 06:40:57,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:57,167 INFO L482 AbstractCegarLoop]: Abstraction has 1870 states and 6412 transitions. [2021-06-05 06:40:57,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 6412 transitions. [2021-06-05 06:40:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:57,169 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:57,170 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:57,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2177 [2021-06-05 06:40:57,370 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:57,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:57,370 INFO L82 PathProgramCache]: Analyzing trace with hash -275202939, now seen corresponding path program 48 times [2021-06-05 06:40:57,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:57,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558186527] [2021-06-05 06:40:57,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:57,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:57,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558186527] [2021-06-05 06:40:57,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558186527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:57,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326083334] [2021-06-05 06:40:57,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:57,693 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:40:57,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:57,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:40:57,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:58,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:40:58,121 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:40:58,128 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:40:58,134 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:40:58,141 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:40:58,148 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:40:58,157 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:40:58,165 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:40:58,174 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:40:58,181 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:40:58,189 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:40:58,197 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:40:58,204 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:40:58,211 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:40:58,218 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:58,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:40:58,223 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,243 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:40:58,244 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:40:58,245 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:40:58,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:40:58,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326083334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:58,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:58,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:40:58,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053996023] [2021-06-05 06:40:58,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:40:58,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:58,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:40:58,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:40:58,267 INFO L87 Difference]: Start difference. First operand 1870 states and 6412 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:59,767 INFO L93 Difference]: Finished difference Result 2342 states and 7805 transitions. [2021-06-05 06:40:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:40:59,768 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:40:59,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:59,771 INFO L225 Difference]: With dead ends: 2342 [2021-06-05 06:40:59,771 INFO L226 Difference]: Without dead ends: 2320 [2021-06-05 06:40:59,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1544.5ms TimeCoverageRelationStatistics Valid=359, Invalid=1533, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:40:59,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-06-05 06:40:59,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1866. [2021-06-05 06:40:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 3.429490616621984) internal successors, (6396), 1865 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6396 transitions. [2021-06-05 06:40:59,792 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6396 transitions. Word has length 26 [2021-06-05 06:40:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:59,792 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 6396 transitions. [2021-06-05 06:40:59,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6396 transitions. [2021-06-05 06:40:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:59,794 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:59,794 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:40:59,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2204 [2021-06-05 06:40:59,994 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:59,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:59,995 INFO L82 PathProgramCache]: Analyzing trace with hash 650290927, now seen corresponding path program 49 times [2021-06-05 06:40:59,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:59,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124668085] [2021-06-05 06:40:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:00,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:00,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124668085] [2021-06-05 06:41:00,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124668085] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:00,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495260777] [2021-06-05 06:41:00,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:00,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:00,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:00,501 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_196], 5=[v_prenex_198, v_prenex_200]} [2021-06-05 06:41:00,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:00,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:00,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:00,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:00,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:41:00,509 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:00,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:00,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:00,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:00,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:41:00,529 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:00,595 INFO L628 ElimStorePlain]: treesize reduction 130, result has 40.1 percent of original size [2021-06-05 06:41:00,596 INFO L518 ElimStorePlain]: Eliminatee v_prenex_196 vanished before elimination [2021-06-05 06:41:00,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:00,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:00,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:00,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 06:41:00,610 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:00,632 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:00,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:00,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:00,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:00,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:00,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 06:41:00,637 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:00,654 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:00,656 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:41:00,656 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:29 [2021-06-05 06:41:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:00,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495260777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:00,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:00,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:41:00,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006704783] [2021-06-05 06:41:00,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:41:00,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:00,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:41:00,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:41:00,691 INFO L87 Difference]: Start difference. First operand 1866 states and 6396 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:01,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:01,996 INFO L93 Difference]: Finished difference Result 2566 states and 8529 transitions. [2021-06-05 06:41:01,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:41:01,996 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:01,999 INFO L225 Difference]: With dead ends: 2566 [2021-06-05 06:41:01,999 INFO L226 Difference]: Without dead ends: 2551 [2021-06-05 06:41:01,999 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1266.5ms TimeCoverageRelationStatistics Valid=321, Invalid=1319, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:41:02,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2021-06-05 06:41:02,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 1866. [2021-06-05 06:41:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 3.429490616621984) internal successors, (6396), 1865 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:02,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6396 transitions. [2021-06-05 06:41:02,021 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6396 transitions. Word has length 26 [2021-06-05 06:41:02,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:02,021 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 6396 transitions. [2021-06-05 06:41:02,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6396 transitions. [2021-06-05 06:41:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:02,023 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:02,023 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:02,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2300 [2021-06-05 06:41:02,224 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:02,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:02,224 INFO L82 PathProgramCache]: Analyzing trace with hash -527613613, now seen corresponding path program 50 times [2021-06-05 06:41:02,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:02,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181671343] [2021-06-05 06:41:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:02,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:02,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181671343] [2021-06-05 06:41:02,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181671343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:02,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132937277] [2021-06-05 06:41:02,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:02,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:41:02,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:02,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:02,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,711 INFO L354 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size [2021-06-05 06:41:02,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 26 [2021-06-05 06:41:02,712 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,735 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 06:41:02,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2021-06-05 06:41:02,745 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,770 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 06:41:02,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2021-06-05 06:41:02,774 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,788 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:02,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:41:02,788 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,815 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 06:41:02,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-05 06:41:02,818 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,841 INFO L354 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size [2021-06-05 06:41:02,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 29 [2021-06-05 06:41:02,843 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,859 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:02,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:41:02,860 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,881 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 06:41:02,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2021-06-05 06:41:02,883 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,901 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:02,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:41:02,901 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,925 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 06:41:02,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 26 [2021-06-05 06:41:02,927 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,950 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 06:41:02,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 26 [2021-06-05 06:41:02,951 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,966 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:02,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:41:02,966 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,981 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:02,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:41:02,982 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:03,009 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 06:41:03,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-05 06:41:03,010 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:03,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:03,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:03,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:03,033 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:03,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 43 [2021-06-05 06:41:03,043 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:03,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:03,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:03,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:03,052 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:03,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:41:03,053 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:03,127 INFO L628 ElimStorePlain]: treesize reduction 109, result has 41.7 percent of original size [2021-06-05 06:41:03,128 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:41:03,128 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:705, output treesize:78 [2021-06-05 06:41:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:03,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132937277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:03,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:03,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2021-06-05 06:41:03,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927113907] [2021-06-05 06:41:03,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:41:03,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:03,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:41:03,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:41:03,216 INFO L87 Difference]: Start difference. First operand 1866 states and 6396 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:04,756 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-06-05 06:41:05,035 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2021-06-05 06:41:05,677 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2021-06-05 06:41:07,206 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-05 06:41:07,857 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 06:41:08,108 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-06-05 06:41:08,494 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 06:41:08,910 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 06:41:09,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:09,387 INFO L93 Difference]: Finished difference Result 3357 states and 10803 transitions. [2021-06-05 06:41:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-05 06:41:09,387 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:09,391 INFO L225 Difference]: With dead ends: 3357 [2021-06-05 06:41:09,391 INFO L226 Difference]: Without dead ends: 3310 [2021-06-05 06:41:09,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2979 ImplicationChecksByTransitivity, 5320.6ms TimeCoverageRelationStatistics Valid=1266, Invalid=7106, Unknown=0, NotChecked=0, Total=8372 [2021-06-05 06:41:09,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2021-06-05 06:41:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 1970. [2021-06-05 06:41:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1969 states have (on average 3.420518029456577) internal successors, (6735), 1969 states have internal predecessors, (6735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 6735 transitions. [2021-06-05 06:41:09,419 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 6735 transitions. Word has length 26 [2021-06-05 06:41:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:09,419 INFO L482 AbstractCegarLoop]: Abstraction has 1970 states and 6735 transitions. [2021-06-05 06:41:09,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 6735 transitions. [2021-06-05 06:41:09,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:09,422 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:09,422 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:09,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2314,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:09,637 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:09,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:09,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2073850769, now seen corresponding path program 51 times [2021-06-05 06:41:09,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:09,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828936140] [2021-06-05 06:41:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:09,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:09,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828936140] [2021-06-05 06:41:09,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828936140] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:09,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542582528] [2021-06-05 06:41:09,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:09,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:41:09,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:09,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:09,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:10,369 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-06-05 06:41:10,561 INFO L446 ElimStorePlain]: Different costs {5=[v_prenex_206, v_prenex_208, v_prenex_210, v_prenex_212, v_prenex_202, v_prenex_214], 6=[A, v_prenex_204]} [2021-06-05 06:41:10,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:10,603 INFO L354 Elim1Store]: treesize reduction 20, result has 45.9 percent of original size [2021-06-05 06:41:10,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 32 [2021-06-05 06:41:10,605 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:10,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:10,646 INFO L354 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2021-06-05 06:41:10,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 39 [2021-06-05 06:41:10,649 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:11,022 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2021-06-05 06:41:11,023 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:11,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:11,067 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-05 06:41:11,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 43 [2021-06-05 06:41:11,071 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:11,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:11,105 INFO L354 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2021-06-05 06:41:11,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 36 [2021-06-05 06:41:11,109 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:11,486 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-06-05 06:41:11,487 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:11,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:11,526 INFO L354 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2021-06-05 06:41:11,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 34 [2021-06-05 06:41:11,540 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:11,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:11,581 INFO L354 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2021-06-05 06:41:11,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 47 [2021-06-05 06:41:11,585 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:11,939 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-06-05 06:41:11,940 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:11,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:11,983 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-05 06:41:11,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 43 [2021-06-05 06:41:11,987 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:11,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:12,017 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:12,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 55 [2021-06-05 06:41:12,024 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:13,002 WARN L205 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 150 [2021-06-05 06:41:13,003 INFO L628 ElimStorePlain]: treesize reduction 72, result has 90.2 percent of original size [2021-06-05 06:41:13,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:13,038 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:13,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 55 [2021-06-05 06:41:13,044 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:13,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:13,078 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-05 06:41:13,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 43 [2021-06-05 06:41:13,081 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:13,693 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 147 [2021-06-05 06:41:13,694 INFO L628 ElimStorePlain]: treesize reduction 34, result has 94.9 percent of original size [2021-06-05 06:41:13,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:13,734 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-05 06:41:13,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 43 [2021-06-05 06:41:13,738 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:13,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:13,762 INFO L354 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2021-06-05 06:41:13,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 28 [2021-06-05 06:41:13,763 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:14,040 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-05 06:41:14,041 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:14,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,075 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-05 06:41:14,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 38 [2021-06-05 06:41:14,079 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:14,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,093 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:41:14,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:41:14,094 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:14,335 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-05 06:41:14,336 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:14,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,368 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-05 06:41:14,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 38 [2021-06-05 06:41:14,372 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:14,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,394 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:14,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 53 [2021-06-05 06:41:14,402 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:14,625 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 06:41:14,626 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:14,658 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 14 xjuncts. [2021-06-05 06:41:14,658 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:829, output treesize:777 [2021-06-05 06:41:15,005 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2021-06-05 06:41:15,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:15,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542582528] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:15,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:15,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-05 06:41:15,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343797950] [2021-06-05 06:41:15,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:41:15,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:15,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:41:15,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:41:15,150 INFO L87 Difference]: Start difference. First operand 1970 states and 6735 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:16,112 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-05 06:41:16,665 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2021-06-05 06:41:17,094 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-06-05 06:41:17,851 WARN L205 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-06-05 06:41:18,078 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-06-05 06:41:22,195 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-06-05 06:41:22,425 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-06-05 06:41:22,615 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-06-05 06:41:23,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:23,050 INFO L93 Difference]: Finished difference Result 3232 states and 10559 transitions. [2021-06-05 06:41:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:41:23,051 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:23,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:23,055 INFO L225 Difference]: With dead ends: 3232 [2021-06-05 06:41:23,055 INFO L226 Difference]: Without dead ends: 3187 [2021-06-05 06:41:23,056 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 8321.7ms TimeCoverageRelationStatistics Valid=609, Invalid=2931, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:41:23,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2021-06-05 06:41:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 2005. [2021-06-05 06:41:23,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 2004 states have (on average 3.4266467065868262) internal successors, (6867), 2004 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 6867 transitions. [2021-06-05 06:41:23,093 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 6867 transitions. Word has length 26 [2021-06-05 06:41:23,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:23,093 INFO L482 AbstractCegarLoop]: Abstraction has 2005 states and 6867 transitions. [2021-06-05 06:41:23,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:23,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 6867 transitions. [2021-06-05 06:41:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:23,095 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:23,095 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:23,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2343 [2021-06-05 06:41:23,296 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:23,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:23,296 INFO L82 PathProgramCache]: Analyzing trace with hash 436262311, now seen corresponding path program 52 times [2021-06-05 06:41:23,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:23,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062310870] [2021-06-05 06:41:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:23,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:23,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062310870] [2021-06-05 06:41:23,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062310870] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:23,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634277394] [2021-06-05 06:41:23,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:23,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:41:23,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:23,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:23,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:24,004 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_226], 5=[v_prenex_222, v_prenex_224]} [2021-06-05 06:41:24,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:24,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:24,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:24,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:41:24,010 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:24,091 INFO L628 ElimStorePlain]: treesize reduction 137, result has 41.9 percent of original size [2021-06-05 06:41:24,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:24,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:24,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:41:24,096 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:24,121 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:24,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:24,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:24,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:24,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:24,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 06:41:24,126 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:24,148 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:24,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:24,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:41:24,152 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:24,170 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:24,172 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 06:41:24,173 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:22 [2021-06-05 06:41:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:24,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634277394] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:24,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:24,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:41:24,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416698288] [2021-06-05 06:41:24,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:41:24,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:24,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:41:24,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:41:24,208 INFO L87 Difference]: Start difference. First operand 2005 states and 6867 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:26,289 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-06-05 06:41:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:26,886 INFO L93 Difference]: Finished difference Result 2655 states and 8819 transitions. [2021-06-05 06:41:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:41:26,886 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:26,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:26,890 INFO L225 Difference]: With dead ends: 2655 [2021-06-05 06:41:26,890 INFO L226 Difference]: Without dead ends: 2640 [2021-06-05 06:41:26,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2350.5ms TimeCoverageRelationStatistics Valid=482, Invalid=2170, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:41:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-06-05 06:41:26,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2003. [2021-06-05 06:41:26,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 3.4265734265734267) internal successors, (6860), 2002 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 6860 transitions. [2021-06-05 06:41:26,914 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 6860 transitions. Word has length 26 [2021-06-05 06:41:26,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:26,914 INFO L482 AbstractCegarLoop]: Abstraction has 2003 states and 6860 transitions. [2021-06-05 06:41:26,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 6860 transitions. [2021-06-05 06:41:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:26,916 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:26,916 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:27,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2428,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:27,131 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:27,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:27,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2135160291, now seen corresponding path program 53 times [2021-06-05 06:41:27,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:27,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919288776] [2021-06-05 06:41:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:27,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:27,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919288776] [2021-06-05 06:41:27,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919288776] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:27,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132703956] [2021-06-05 06:41:27,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:27,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:41:27,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:27,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:27,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:27,914 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 06:41:28,092 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 06:41:28,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:28,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:28,312 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:41:28,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-05 06:41:28,314 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:28,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:28,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:28,339 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:28,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-05 06:41:28,345 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:28,718 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-06-05 06:41:28,718 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:28,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:28,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:28,751 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:41:28,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-05 06:41:28,752 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:28,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:28,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:28,780 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:41:28,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 06:41:28,784 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:29,410 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2021-06-05 06:41:29,411 INFO L628 ElimStorePlain]: treesize reduction 29, result has 95.9 percent of original size [2021-06-05 06:41:29,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:29,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:29,447 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:41:29,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 33 [2021-06-05 06:41:29,450 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:29,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:29,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:29,473 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:41:29,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-05 06:41:29,474 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:29,752 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-05 06:41:29,752 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:29,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:29,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:29,784 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:41:29,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-05 06:41:29,788 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:29,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:29,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:29,821 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-05 06:41:29,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 06:41:29,825 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:30,099 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 06:41:30,100 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:30,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,132 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:41:30,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-05 06:41:30,134 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:30,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,155 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:41:30,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-05 06:41:30,157 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:30,400 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-05 06:41:30,401 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:30,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,434 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:41:30,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2021-06-05 06:41:30,437 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:30,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,458 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:41:30,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-06-05 06:41:30,459 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:30,693 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 06:41:30,693 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:30,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,720 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:41:30,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:41:30,721 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:30,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:30,744 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:41:30,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:41:30,748 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:31,155 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2021-06-05 06:41:31,155 INFO L628 ElimStorePlain]: treesize reduction 29, result has 93.8 percent of original size [2021-06-05 06:41:31,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:31,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:31,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:31,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-05 06:41:31,190 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:31,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:31,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:31,202 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:41:31,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:41:31,203 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:31,372 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:41:31,373 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:31,395 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-06-05 06:41:31,395 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:793, output treesize:352 [2021-06-05 06:41:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:31,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132703956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:31,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:31,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-05 06:41:31,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357532780] [2021-06-05 06:41:31,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:41:31,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:31,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:41:31,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:41:31,552 INFO L87 Difference]: Start difference. First operand 2003 states and 6860 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:33,450 WARN L205 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-05 06:41:36,379 WARN L205 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2021-06-05 06:41:39,459 WARN L205 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 173 DAG size of output: 115 [2021-06-05 06:41:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:39,999 INFO L93 Difference]: Finished difference Result 2890 states and 9570 transitions. [2021-06-05 06:41:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 06:41:40,000 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:40,003 INFO L225 Difference]: With dead ends: 2890 [2021-06-05 06:41:40,003 INFO L226 Difference]: Without dead ends: 2860 [2021-06-05 06:41:40,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 8763.0ms TimeCoverageRelationStatistics Valid=522, Invalid=2448, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 06:41:40,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-06-05 06:41:40,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2003. [2021-06-05 06:41:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 3.4265734265734267) internal successors, (6860), 2002 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:40,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 6860 transitions. [2021-06-05 06:41:40,037 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 6860 transitions. Word has length 26 [2021-06-05 06:41:40,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:40,037 INFO L482 AbstractCegarLoop]: Abstraction has 2003 states and 6860 transitions. [2021-06-05 06:41:40,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:40,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 6860 transitions. [2021-06-05 06:41:40,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:40,039 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:40,039 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:40,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2442 [2021-06-05 06:41:40,240 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:40,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1001444339, now seen corresponding path program 54 times [2021-06-05 06:41:40,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:40,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295220016] [2021-06-05 06:41:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:40,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:40,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:40,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295220016] [2021-06-05 06:41:40,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295220016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:40,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991629270] [2021-06-05 06:41:40,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:40,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:41:40,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:40,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:41:40,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:40,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,691 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:40,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-06-05 06:41:40,697 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,720 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:41:40,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2021-06-05 06:41:40,724 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,746 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size [2021-06-05 06:41:40,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2021-06-05 06:41:40,747 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,762 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:40,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:41:40,763 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,785 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 06:41:40,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:41:40,786 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,801 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:40,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:41:40,802 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,815 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:40,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:41:40,816 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,830 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:40,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:41:40,831 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,852 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 06:41:40,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:41:40,854 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,869 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:40,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:41:40,869 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,893 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:41:40,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:41:40,896 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,918 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 06:41:40,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-05 06:41:40,920 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,934 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:40,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:41:40,934 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,948 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:40,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:41:40,948 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,961 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:40,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 06:41:40,962 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,969 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:40,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:41:40,970 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:41,036 INFO L628 ElimStorePlain]: treesize reduction 42, result has 65.0 percent of original size [2021-06-05 06:41:41,037 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:41:41,037 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:657, output treesize:78 [2021-06-05 06:41:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:41,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991629270] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:41,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:41,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:41:41,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586133860] [2021-06-05 06:41:41,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:41:41,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:41,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:41:41,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:41:41,117 INFO L87 Difference]: Start difference. First operand 2003 states and 6860 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:43,416 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-06-05 06:41:43,646 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-06-05 06:41:43,888 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-06-05 06:41:44,205 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-06-05 06:41:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:44,853 INFO L93 Difference]: Finished difference Result 3566 states and 11484 transitions. [2021-06-05 06:41:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:41:44,853 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:44,858 INFO L225 Difference]: With dead ends: 3566 [2021-06-05 06:41:44,858 INFO L226 Difference]: Without dead ends: 3532 [2021-06-05 06:41:44,859 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 3385.0ms TimeCoverageRelationStatistics Valid=879, Invalid=3153, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:41:44,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2021-06-05 06:41:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 2009. [2021-06-05 06:41:44,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 3.431772908366534) internal successors, (6891), 2008 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 6891 transitions. [2021-06-05 06:41:44,888 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 6891 transitions. Word has length 26 [2021-06-05 06:41:44,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:44,889 INFO L482 AbstractCegarLoop]: Abstraction has 2009 states and 6891 transitions. [2021-06-05 06:41:44,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:44,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 6891 transitions. [2021-06-05 06:41:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:44,891 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:44,891 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:45,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2508,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:45,091 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:45,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:45,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1556883255, now seen corresponding path program 30 times [2021-06-05 06:41:45,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:45,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155200948] [2021-06-05 06:41:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:45,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:45,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155200948] [2021-06-05 06:41:45,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155200948] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:45,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410844069] [2021-06-05 06:41:45,223 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:45,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:41:45,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:45,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:41:45,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:45,582 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:41:45,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:41:45,584 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,593 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:45,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:45,594 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,602 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:45,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:45,603 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,622 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:41:45,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:41:45,624 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,639 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:45,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:41:45,643 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,660 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:41:45,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:41:45,662 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,671 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:45,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:45,671 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,686 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:45,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:41:45,690 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,699 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:45,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:45,700 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,709 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:45,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:45,709 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,726 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:41:45,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:41:45,727 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,737 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:45,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2021-06-05 06:41:45,738 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,755 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:41:45,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:41:45,759 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,767 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:45,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:45,767 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,775 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:45,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:45,776 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,781 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:45,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:45,782 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:45,902 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-06-05 06:41:45,903 INFO L628 ElimStorePlain]: treesize reduction 33, result has 82.1 percent of original size [2021-06-05 06:41:45,905 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:41:45,905 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:697, output treesize:177 [2021-06-05 06:41:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:46,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410844069] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:46,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:46,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-05 06:41:46,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71188809] [2021-06-05 06:41:46,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:41:46,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:46,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:41:46,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:41:46,077 INFO L87 Difference]: Start difference. First operand 2009 states and 6891 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:46,927 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2021-06-05 06:41:47,682 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-06-05 06:41:47,839 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-06-05 06:41:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:47,875 INFO L93 Difference]: Finished difference Result 2493 states and 8335 transitions. [2021-06-05 06:41:47,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:41:47,875 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:47,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:47,879 INFO L225 Difference]: With dead ends: 2493 [2021-06-05 06:41:47,879 INFO L226 Difference]: Without dead ends: 2478 [2021-06-05 06:41:47,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1684.9ms TimeCoverageRelationStatistics Valid=234, Invalid=1248, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:41:47,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-06-05 06:41:47,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2002. [2021-06-05 06:41:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 2001 states have (on average 3.4302848575712144) internal successors, (6864), 2001 states have internal predecessors, (6864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:47,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 6864 transitions. [2021-06-05 06:41:47,901 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 6864 transitions. Word has length 26 [2021-06-05 06:41:47,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:47,901 INFO L482 AbstractCegarLoop]: Abstraction has 2002 states and 6864 transitions. [2021-06-05 06:41:47,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:47,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 6864 transitions. [2021-06-05 06:41:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:47,904 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:47,904 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:48,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2535 [2021-06-05 06:41:48,119 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:48,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:48,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1386281111, now seen corresponding path program 31 times [2021-06-05 06:41:48,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:48,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744825847] [2021-06-05 06:41:48,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:48,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:48,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:48,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744825847] [2021-06-05 06:41:48,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744825847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:48,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549098165] [2021-06-05 06:41:48,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:48,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:48,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:48,643 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-06-05 06:41:48,845 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2021-06-05 06:41:48,902 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_249], 2=[A, v_prenex_250]} [2021-06-05 06:41:48,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:48,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:41:48,907 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:48,996 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-05 06:41:48,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:49,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:41:49,001 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:49,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:49,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:49,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:41:49,005 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:49,053 INFO L628 ElimStorePlain]: treesize reduction 13, result has 83.5 percent of original size [2021-06-05 06:41:49,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:49,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:49,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:41:49,057 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:49,077 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:49,079 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:41:49,079 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:32 [2021-06-05 06:41:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:49,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549098165] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:49,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:49,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:41:49,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50841937] [2021-06-05 06:41:49,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:41:49,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:49,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:41:49,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:41:49,116 INFO L87 Difference]: Start difference. First operand 2002 states and 6864 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:50,110 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:41:50,433 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-06-05 06:41:50,605 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2021-06-05 06:41:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:50,835 INFO L93 Difference]: Finished difference Result 2918 states and 9622 transitions. [2021-06-05 06:41:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:41:50,836 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:50,839 INFO L225 Difference]: With dead ends: 2918 [2021-06-05 06:41:50,839 INFO L226 Difference]: Without dead ends: 2873 [2021-06-05 06:41:50,840 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1801.9ms TimeCoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:41:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2021-06-05 06:41:50,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2019. [2021-06-05 06:41:50,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2018 states have (on average 3.4345887016848367) internal successors, (6931), 2018 states have internal predecessors, (6931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 6931 transitions. [2021-06-05 06:41:50,864 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 6931 transitions. Word has length 26 [2021-06-05 06:41:50,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:50,864 INFO L482 AbstractCegarLoop]: Abstraction has 2019 states and 6931 transitions. [2021-06-05 06:41:50,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:50,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 6931 transitions. [2021-06-05 06:41:50,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:50,866 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:50,866 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:51,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2592,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:51,069 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:51,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:51,069 INFO L82 PathProgramCache]: Analyzing trace with hash -231251669, now seen corresponding path program 32 times [2021-06-05 06:41:51,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:51,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368914557] [2021-06-05 06:41:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:51,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:51,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368914557] [2021-06-05 06:41:51,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368914557] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:51,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948411619] [2021-06-05 06:41:51,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:51,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:41:51,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:51,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:41:51,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:51,568 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-06-05 06:41:51,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:51,658 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:51,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 06:41:51,663 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:51,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:51,679 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:51,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 06:41:51,681 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:51,965 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 120 [2021-06-05 06:41:51,966 INFO L628 ElimStorePlain]: treesize reduction 131, result has 71.4 percent of original size [2021-06-05 06:41:51,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:51,978 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:41:51,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:41:51,980 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,097 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 06:41:52,097 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,109 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:41:52,113 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,235 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-05 06:41:52,236 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,247 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:41:52,251 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,354 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-05 06:41:52,355 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,366 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:41:52,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:41:52,368 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,465 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,476 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:41:52,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:41:52,477 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,572 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,582 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:41:52,583 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,675 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,687 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:41:52,689 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,697 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:41:52,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:41:52,697 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,766 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,771 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:41:52,771 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:503, output treesize:150 [2021-06-05 06:41:52,892 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2021-06-05 06:41:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:52,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948411619] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:52,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:52,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:41:52,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669415454] [2021-06-05 06:41:52,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:41:52,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:52,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:41:52,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:41:52,932 INFO L87 Difference]: Start difference. First operand 2019 states and 6931 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:53,828 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:41:53,988 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-06-05 06:41:54,322 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-06-05 06:41:54,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:54,766 INFO L93 Difference]: Finished difference Result 3134 states and 10334 transitions. [2021-06-05 06:41:54,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:41:54,767 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:54,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:54,771 INFO L225 Difference]: With dead ends: 3134 [2021-06-05 06:41:54,771 INFO L226 Difference]: Without dead ends: 3104 [2021-06-05 06:41:54,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1983.1ms TimeCoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:41:54,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-06-05 06:41:54,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2002. [2021-06-05 06:41:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 2001 states have (on average 3.4292853573213393) internal successors, (6862), 2001 states have internal predecessors, (6862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:54,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 6862 transitions. [2021-06-05 06:41:54,797 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 6862 transitions. Word has length 26 [2021-06-05 06:41:54,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:54,797 INFO L482 AbstractCegarLoop]: Abstraction has 2002 states and 6862 transitions. [2021-06-05 06:41:54,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:54,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 6862 transitions. [2021-06-05 06:41:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:54,800 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:54,800 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:55,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2604 [2021-06-05 06:41:55,004 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:55,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:55,004 INFO L82 PathProgramCache]: Analyzing trace with hash -714132561, now seen corresponding path program 33 times [2021-06-05 06:41:55,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:55,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060646809] [2021-06-05 06:41:55,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:55,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:55,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060646809] [2021-06-05 06:41:55,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060646809] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:55,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713318366] [2021-06-05 06:41:55,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:55,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:41:55,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:55,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:55,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:55,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:41:55,530 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:41:55,536 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:55,542 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:55,547 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:55,553 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:41:55,559 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:41:55,564 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:55,570 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:55,576 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:41:55,582 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:55,588 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:55,593 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:55,599 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:41:55,604 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:55,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:55,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:41:55,608 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:55,627 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:41:55,628 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:41:55,628 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:41:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:55,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713318366] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:55,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:55,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:41:55,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071877612] [2021-06-05 06:41:55,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:41:55,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:55,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:41:55,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:41:55,650 INFO L87 Difference]: Start difference. First operand 2002 states and 6862 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:56,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:56,144 INFO L93 Difference]: Finished difference Result 2504 states and 8391 transitions. [2021-06-05 06:41:56,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:41:56,145 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:56,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:56,148 INFO L225 Difference]: With dead ends: 2504 [2021-06-05 06:41:56,148 INFO L226 Difference]: Without dead ends: 2483 [2021-06-05 06:41:56,148 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 618.1ms TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:41:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2021-06-05 06:41:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2009. [2021-06-05 06:41:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 3.431772908366534) internal successors, (6891), 2008 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 6891 transitions. [2021-06-05 06:41:56,170 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 6891 transitions. Word has length 26 [2021-06-05 06:41:56,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:56,170 INFO L482 AbstractCegarLoop]: Abstraction has 2009 states and 6891 transitions. [2021-06-05 06:41:56,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:56,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 6891 transitions. [2021-06-05 06:41:56,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:56,172 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:56,172 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:56,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2632 [2021-06-05 06:41:56,373 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:56,373 INFO L82 PathProgramCache]: Analyzing trace with hash -881941653, now seen corresponding path program 34 times [2021-06-05 06:41:56,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:56,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511598512] [2021-06-05 06:41:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:56,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:56,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511598512] [2021-06-05 06:41:56,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511598512] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:56,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785452343] [2021-06-05 06:41:56,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:56,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:41:56,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:56,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:41:56,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:56,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:41:56,896 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:56,903 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:56,908 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:41:56,915 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:56,921 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:41:56,927 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:56,933 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:41:56,939 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:56,945 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:56,951 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:56,957 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:41:56,962 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:41:56,968 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:41:56,973 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:56,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:56,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:56,977 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:56,996 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:41:56,997 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:41:56,997 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:41:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:57,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785452343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:57,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:57,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:41:57,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195124896] [2021-06-05 06:41:57,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:41:57,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:57,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:41:57,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:41:57,023 INFO L87 Difference]: Start difference. First operand 2009 states and 6891 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:57,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:57,385 INFO L93 Difference]: Finished difference Result 2352 states and 7913 transitions. [2021-06-05 06:41:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:41:57,385 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:57,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:57,388 INFO L225 Difference]: With dead ends: 2352 [2021-06-05 06:41:57,388 INFO L226 Difference]: Without dead ends: 2333 [2021-06-05 06:41:57,388 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 470.4ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:41:57,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2021-06-05 06:41:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2003. [2021-06-05 06:41:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 3.4315684315684316) internal successors, (6870), 2002 states have internal predecessors, (6870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:57,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 6870 transitions. [2021-06-05 06:41:57,418 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 6870 transitions. Word has length 26 [2021-06-05 06:41:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:57,418 INFO L482 AbstractCegarLoop]: Abstraction has 2003 states and 6870 transitions. [2021-06-05 06:41:57,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 6870 transitions. [2021-06-05 06:41:57,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:57,421 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:57,421 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:57,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2674,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:57,636 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:57,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:57,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1345509615, now seen corresponding path program 35 times [2021-06-05 06:41:57,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:57,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975140334] [2021-06-05 06:41:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:57,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:57,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975140334] [2021-06-05 06:41:57,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975140334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:57,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547368614] [2021-06-05 06:41:57,798 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:57,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:41:57,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:57,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:41:57,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:58,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,121 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:41:58,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:58,122 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,130 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:41:58,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:58,131 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,142 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:41:58,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:41:58,143 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,152 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:41:58,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:58,153 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,164 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:58,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:41:58,165 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,174 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:41:58,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:58,174 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,186 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:41:58,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:41:58,187 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,196 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:41:58,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:58,197 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,205 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:41:58,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:58,206 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,214 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:41:58,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:58,215 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,226 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:58,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:41:58,229 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,239 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:58,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:41:58,243 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,253 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:41:58,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:41:58,255 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,263 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:41:58,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:58,264 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,275 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:41:58,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:41:58,276 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:58,282 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:41:58,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2021-06-05 06:41:58,282 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:58,376 INFO L628 ElimStorePlain]: treesize reduction 24, result has 82.5 percent of original size [2021-06-05 06:41:58,378 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:41:58,378 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:617, output treesize:91 [2021-06-05 06:41:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:41:58,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547368614] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:58,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:58,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:41:58,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238184244] [2021-06-05 06:41:58,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:41:58,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:58,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:41:58,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:41:58,470 INFO L87 Difference]: Start difference. First operand 2003 states and 6870 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:59,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:59,753 INFO L93 Difference]: Finished difference Result 2949 states and 9724 transitions. [2021-06-05 06:41:59,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:41:59,753 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:41:59,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:59,757 INFO L225 Difference]: With dead ends: 2949 [2021-06-05 06:41:59,757 INFO L226 Difference]: Without dead ends: 2899 [2021-06-05 06:41:59,758 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1227.5ms TimeCoverageRelationStatistics Valid=271, Invalid=1135, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:41:59,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2021-06-05 06:41:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1994. [2021-06-05 06:41:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 3.4290015052684395) internal successors, (6834), 1993 states have internal predecessors, (6834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 6834 transitions. [2021-06-05 06:41:59,785 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 6834 transitions. Word has length 26 [2021-06-05 06:41:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:59,785 INFO L482 AbstractCegarLoop]: Abstraction has 1994 states and 6834 transitions. [2021-06-05 06:41:59,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 6834 transitions. [2021-06-05 06:41:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:59,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:59,787 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:41:59,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2718,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:59,989 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:59,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:59,989 INFO L82 PathProgramCache]: Analyzing trace with hash -583168205, now seen corresponding path program 36 times [2021-06-05 06:41:59,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:59,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48803358] [2021-06-05 06:41:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:00,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:00,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48803358] [2021-06-05 06:42:00,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48803358] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:00,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577958263] [2021-06-05 06:42:00,152 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:00,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:42:00,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:00,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:42:00,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:00,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,484 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:00,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:00,485 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,496 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:00,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:42:00,497 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,607 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:42:00,607 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:00,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,620 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:00,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:42:00,621 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,630 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:00,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:42:00,633 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,735 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 06:42:00,735 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:00,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,747 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:00,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:42:00,749 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,758 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:00,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:42:00,759 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,854 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:00,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,866 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:00,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:42:00,867 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,875 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:00,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:00,879 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:00,960 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:42:00,960 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:293, output treesize:141 [2021-06-05 06:42:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:01,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577958263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:01,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:01,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:42:01,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456815391] [2021-06-05 06:42:01,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:01,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:01,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:01,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:01,077 INFO L87 Difference]: Start difference. First operand 1994 states and 6834 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:01,683 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-06-05 06:42:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:01,906 INFO L93 Difference]: Finished difference Result 2201 states and 7427 transitions. [2021-06-05 06:42:01,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:42:01,906 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:01,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:01,909 INFO L225 Difference]: With dead ends: 2201 [2021-06-05 06:42:01,909 INFO L226 Difference]: Without dead ends: 2176 [2021-06-05 06:42:01,910 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 911.5ms TimeCoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:42:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-06-05 06:42:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1990. [2021-06-05 06:42:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1989 states have (on average 3.431875314228255) internal successors, (6826), 1989 states have internal predecessors, (6826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 6826 transitions. [2021-06-05 06:42:01,930 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 6826 transitions. Word has length 26 [2021-06-05 06:42:01,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:01,931 INFO L482 AbstractCegarLoop]: Abstraction has 1990 states and 6826 transitions. [2021-06-05 06:42:01,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:01,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 6826 transitions. [2021-06-05 06:42:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:01,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:01,933 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:02,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2767,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:02,133 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash -129711505, now seen corresponding path program 37 times [2021-06-05 06:42:02,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:02,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673716203] [2021-06-05 06:42:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:02,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:02,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673716203] [2021-06-05 06:42:02,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673716203] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:02,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413104143] [2021-06-05 06:42:02,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:02,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:42:02,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:02,655 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-06-05 06:42:02,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:02,772 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:02,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:42:02,773 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:02,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:02,784 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:02,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:42:02,787 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,093 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2021-06-05 06:42:03,094 INFO L628 ElimStorePlain]: treesize reduction 24, result has 93.7 percent of original size [2021-06-05 06:42:03,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,107 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:42:03,109 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,120 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:03,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:42:03,122 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,268 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:42:03,269 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,282 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:03,286 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,297 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:03,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:42:03,298 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,424 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:42:03,424 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,437 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:03,438 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,449 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:03,451 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,706 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2021-06-05 06:42:03,706 INFO L628 ElimStorePlain]: treesize reduction 4, result has 98.5 percent of original size [2021-06-05 06:42:03,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,720 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:42:03,723 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,733 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:03,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:42:03,734 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,831 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,846 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:42:03,846 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:407, output treesize:170 [2021-06-05 06:42:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:03,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413104143] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:03,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:03,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:42:03,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115573932] [2021-06-05 06:42:03,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:03,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:03,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:03,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:03,967 INFO L87 Difference]: Start difference. First operand 1990 states and 6826 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:04,651 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2021-06-05 06:42:04,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:04,843 INFO L93 Difference]: Finished difference Result 2694 states and 8981 transitions. [2021-06-05 06:42:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:42:04,844 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:04,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:04,847 INFO L225 Difference]: With dead ends: 2694 [2021-06-05 06:42:04,847 INFO L226 Difference]: Without dead ends: 2648 [2021-06-05 06:42:04,847 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1019.8ms TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:42:04,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2021-06-05 06:42:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 1999. [2021-06-05 06:42:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1999 states, 1998 states have (on average 3.4334334334334335) internal successors, (6860), 1998 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:04,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 6860 transitions. [2021-06-05 06:42:04,871 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 6860 transitions. Word has length 26 [2021-06-05 06:42:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:04,871 INFO L482 AbstractCegarLoop]: Abstraction has 1999 states and 6860 transitions. [2021-06-05 06:42:04,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:04,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 6860 transitions. [2021-06-05 06:42:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:04,873 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:04,873 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:05,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2798 [2021-06-05 06:42:05,073 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:05,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:05,074 INFO L82 PathProgramCache]: Analyzing trace with hash -858801881, now seen corresponding path program 38 times [2021-06-05 06:42:05,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:05,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812922300] [2021-06-05 06:42:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:05,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:05,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812922300] [2021-06-05 06:42:05,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812922300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:05,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371756973] [2021-06-05 06:42:05,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:05,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:42:05,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:05,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:42:05,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:05,702 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 06:42:05,947 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 57 [2021-06-05 06:42:06,010 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_290, v_prenex_289]} [2021-06-05 06:42:06,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:06,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:42:06,015 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:06,105 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-05 06:42:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:06,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:06,111 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:06,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:06,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:06,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:06,115 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:06,166 INFO L628 ElimStorePlain]: treesize reduction 13, result has 83.5 percent of original size [2021-06-05 06:42:06,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:06,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:06,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:06,170 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:06,190 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:06,192 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:42:06,192 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:32 [2021-06-05 06:42:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:06,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371756973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:06,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:06,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:42:06,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188170768] [2021-06-05 06:42:06,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:06,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:06,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:06,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:06,230 INFO L87 Difference]: Start difference. First operand 1999 states and 6860 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:07,089 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:42:07,474 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2021-06-05 06:42:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:07,673 INFO L93 Difference]: Finished difference Result 2703 states and 8943 transitions. [2021-06-05 06:42:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:42:07,673 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:07,677 INFO L225 Difference]: With dead ends: 2703 [2021-06-05 06:42:07,677 INFO L226 Difference]: Without dead ends: 2658 [2021-06-05 06:42:07,677 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1692.4ms TimeCoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:42:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2021-06-05 06:42:07,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 1983. [2021-06-05 06:42:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1982 states have (on average 3.43087790110999) internal successors, (6800), 1982 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:07,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 6800 transitions. [2021-06-05 06:42:07,700 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 6800 transitions. Word has length 26 [2021-06-05 06:42:07,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:07,700 INFO L482 AbstractCegarLoop]: Abstraction has 1983 states and 6800 transitions. [2021-06-05 06:42:07,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:07,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 6800 transitions. [2021-06-05 06:42:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:07,702 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:07,702 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:07,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2835,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:07,903 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:07,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:07,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1072305685, now seen corresponding path program 39 times [2021-06-05 06:42:07,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:07,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449019068] [2021-06-05 06:42:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:08,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:08,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449019068] [2021-06-05 06:42:08,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449019068] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:08,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548909834] [2021-06-05 06:42:08,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:08,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:42:08,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:08,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:42:08,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:08,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:42:08,391 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:42:08,397 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:42:08,403 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:08,408 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:42:08,414 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:42:08,420 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:42:08,426 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:42:08,432 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:42:08,437 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:08,443 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:42:08,449 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:42:08,454 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:42:08,459 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:42:08,464 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:42:08,467 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,485 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:42:08,486 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:42:08,486 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:42:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:08,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548909834] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:08,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:08,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:42:08,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209173854] [2021-06-05 06:42:08,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:08,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:08,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:08,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:08,508 INFO L87 Difference]: Start difference. First operand 1983 states and 6800 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:09,005 INFO L93 Difference]: Finished difference Result 2475 states and 8338 transitions. [2021-06-05 06:42:09,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 06:42:09,005 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:09,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:09,009 INFO L225 Difference]: With dead ends: 2475 [2021-06-05 06:42:09,009 INFO L226 Difference]: Without dead ends: 2460 [2021-06-05 06:42:09,009 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 544.7ms TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:42:09,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-06-05 06:42:09,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1983. [2021-06-05 06:42:09,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1982 states have (on average 3.43087790110999) internal successors, (6800), 1982 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 6800 transitions. [2021-06-05 06:42:09,032 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 6800 transitions. Word has length 26 [2021-06-05 06:42:09,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:09,032 INFO L482 AbstractCegarLoop]: Abstraction has 1983 states and 6800 transitions. [2021-06-05 06:42:09,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 6800 transitions. [2021-06-05 06:42:09,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:09,034 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:09,034 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:09,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2846 [2021-06-05 06:42:09,235 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:09,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:09,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1240114777, now seen corresponding path program 40 times [2021-06-05 06:42:09,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:09,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140717429] [2021-06-05 06:42:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:09,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:09,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140717429] [2021-06-05 06:42:09,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140717429] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:09,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593089745] [2021-06-05 06:42:09,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:09,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:42:09,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:09,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:42:09,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:09,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:42:09,705 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:42:09,710 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:42:09,715 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:42:09,720 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:42:09,726 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:42:09,731 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:09,736 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:42:09,741 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:42:09,746 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:09,751 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:42:09,756 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:42:09,761 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:42:09,766 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:42:09,771 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:09,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:42:09,774 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,792 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:42:09,793 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:42:09,793 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:42:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:09,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593089745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:09,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:09,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:42:09,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201214587] [2021-06-05 06:42:09,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:09,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:09,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:09,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:09,822 INFO L87 Difference]: Start difference. First operand 1983 states and 6800 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:10,800 INFO L93 Difference]: Finished difference Result 2790 states and 9280 transitions. [2021-06-05 06:42:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:42:10,800 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:10,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:10,804 INFO L225 Difference]: With dead ends: 2790 [2021-06-05 06:42:10,804 INFO L226 Difference]: Without dead ends: 2760 [2021-06-05 06:42:10,804 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 959.9ms TimeCoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:42:10,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2021-06-05 06:42:10,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1983. [2021-06-05 06:42:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1982 states have (on average 3.43087790110999) internal successors, (6800), 1982 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 6800 transitions. [2021-06-05 06:42:10,828 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 6800 transitions. Word has length 26 [2021-06-05 06:42:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:10,828 INFO L482 AbstractCegarLoop]: Abstraction has 1983 states and 6800 transitions. [2021-06-05 06:42:10,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 6800 transitions. [2021-06-05 06:42:10,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:10,830 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:10,831 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:11,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2888,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:11,031 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:11,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:11,031 INFO L82 PathProgramCache]: Analyzing trace with hash -941341329, now seen corresponding path program 41 times [2021-06-05 06:42:11,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:11,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611598554] [2021-06-05 06:42:11,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:11,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:11,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611598554] [2021-06-05 06:42:11,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611598554] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:11,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484740898] [2021-06-05 06:42:11,148 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:11,171 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:42:11,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:11,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:42:11,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:11,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:11,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:11,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:42:11,451 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:11,530 INFO L628 ElimStorePlain]: treesize reduction 121, result has 44.0 percent of original size [2021-06-05 06:42:11,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:11,534 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:11,558 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:11,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:11,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:11,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:42:11,563 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:11,585 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:11,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:11,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:11,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:11,589 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:11,608 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:11,610 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 06:42:11,610 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:248, output treesize:22 [2021-06-05 06:42:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:11,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484740898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:11,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:11,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:42:11,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572293781] [2021-06-05 06:42:11,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:11,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:11,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:11,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:11,646 INFO L87 Difference]: Start difference. First operand 1983 states and 6800 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:12,283 INFO L93 Difference]: Finished difference Result 2608 states and 8716 transitions. [2021-06-05 06:42:12,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:42:12,283 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:12,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:12,286 INFO L225 Difference]: With dead ends: 2608 [2021-06-05 06:42:12,287 INFO L226 Difference]: Without dead ends: 2578 [2021-06-05 06:42:12,287 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 651.6ms TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:42:12,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-06-05 06:42:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 1986. [2021-06-05 06:42:12,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1985 states have (on average 3.433249370277078) internal successors, (6815), 1985 states have internal predecessors, (6815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 6815 transitions. [2021-06-05 06:42:12,309 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 6815 transitions. Word has length 26 [2021-06-05 06:42:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:12,309 INFO L482 AbstractCegarLoop]: Abstraction has 1986 states and 6815 transitions. [2021-06-05 06:42:12,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 6815 transitions. [2021-06-05 06:42:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:12,311 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:12,311 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:12,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2932,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:12,512 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:12,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:12,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1403214703, now seen corresponding path program 42 times [2021-06-05 06:42:12,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:12,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678522801] [2021-06-05 06:42:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:12,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:12,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678522801] [2021-06-05 06:42:12,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678522801] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:12,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580846831] [2021-06-05 06:42:12,640 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:12,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:42:12,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:12,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:12,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:13,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:13,027 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:13,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:42:13,028 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:13,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:13,038 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:13,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:13,041 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:13,144 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 06:42:13,145 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:13,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:13,157 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:13,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:42:13,158 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:13,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:13,167 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:13,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:42:13,170 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:13,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:13,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:13,279 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:13,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:13,280 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:13,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:13,289 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:13,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:42:13,291 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:13,378 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:13,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:13,389 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:13,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:42:13,390 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:13,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:13,398 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:13,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:42:13,400 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:13,478 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:13,491 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:42:13,491 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:309, output treesize:141 [2021-06-05 06:42:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:13,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580846831] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:13,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:13,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:42:13,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976832413] [2021-06-05 06:42:13,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:13,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:13,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:13,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:13,607 INFO L87 Difference]: Start difference. First operand 1986 states and 6815 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:14,082 INFO L93 Difference]: Finished difference Result 2559 states and 8622 transitions. [2021-06-05 06:42:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:42:14,082 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:14,085 INFO L225 Difference]: With dead ends: 2559 [2021-06-05 06:42:14,085 INFO L226 Difference]: Without dead ends: 2544 [2021-06-05 06:42:14,085 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 667.3ms TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:42:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-06-05 06:42:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2010. [2021-06-05 06:42:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 2009 states have (on average 3.4310602289696366) internal successors, (6893), 2009 states have internal predecessors, (6893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 6893 transitions. [2021-06-05 06:42:14,109 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 6893 transitions. Word has length 26 [2021-06-05 06:42:14,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:14,110 INFO L482 AbstractCegarLoop]: Abstraction has 2010 states and 6893 transitions. [2021-06-05 06:42:14,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:14,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 6893 transitions. [2021-06-05 06:42:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:14,112 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:14,112 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:14,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2946 [2021-06-05 06:42:14,312 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:14,313 INFO L82 PathProgramCache]: Analyzing trace with hash -2092411309, now seen corresponding path program 43 times [2021-06-05 06:42:14,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:14,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105702672] [2021-06-05 06:42:14,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:14,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:14,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105702672] [2021-06-05 06:42:14,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105702672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:14,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532080335] [2021-06-05 06:42:14,508 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:14,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:42:14,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:14,881 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:42:15,087 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2021-06-05 06:42:15,141 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_313, v_prenex_314], 2=[A, v_prenex_312]} [2021-06-05 06:42:15,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:15,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:42:15,147 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:15,273 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-05 06:42:15,273 INFO L628 ElimStorePlain]: treesize reduction 117, result has 43.8 percent of original size [2021-06-05 06:42:15,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:15,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-05 06:42:15,277 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:15,303 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:15,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:15,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:15,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:15,307 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:15,330 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:15,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:15,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:15,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:15,334 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:15,354 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:15,355 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:42:15,355 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:222, output treesize:15 [2021-06-05 06:42:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:15,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532080335] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:15,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:15,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:42:15,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418835678] [2021-06-05 06:42:15,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:15,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:15,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:15,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:15,401 INFO L87 Difference]: Start difference. First operand 2010 states and 6893 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:16,020 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 06:42:16,206 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2021-06-05 06:42:16,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:16,338 INFO L93 Difference]: Finished difference Result 2656 states and 8840 transitions. [2021-06-05 06:42:16,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:42:16,338 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:16,342 INFO L225 Difference]: With dead ends: 2656 [2021-06-05 06:42:16,342 INFO L226 Difference]: Without dead ends: 2611 [2021-06-05 06:42:16,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1325.2ms TimeCoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:42:16,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-06-05 06:42:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2044. [2021-06-05 06:42:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 2043 states have (on average 3.4322075379344104) internal successors, (7012), 2043 states have internal predecessors, (7012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 7012 transitions. [2021-06-05 06:42:16,365 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 7012 transitions. Word has length 26 [2021-06-05 06:42:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:16,366 INFO L482 AbstractCegarLoop]: Abstraction has 2044 states and 7012 transitions. [2021-06-05 06:42:16,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 7012 transitions. [2021-06-05 06:42:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:16,368 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:16,368 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:16,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2978,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:16,568 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:16,569 INFO L82 PathProgramCache]: Analyzing trace with hash 585023207, now seen corresponding path program 44 times [2021-06-05 06:42:16,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:16,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972605033] [2021-06-05 06:42:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:16,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:16,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:16,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972605033] [2021-06-05 06:42:16,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972605033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:16,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967167168] [2021-06-05 06:42:16,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:16,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:42:16,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:16,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:42:16,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:17,133 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:42:17,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:17,266 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:17,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 06:42:17,271 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:17,645 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 150 [2021-06-05 06:42:17,645 INFO L628 ElimStorePlain]: treesize reduction 139, result has 74.8 percent of original size [2021-06-05 06:42:17,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:17,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:17,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:42:17,673 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:17,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:17,686 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:42:17,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:17,687 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:17,987 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 142 [2021-06-05 06:42:17,987 INFO L628 ElimStorePlain]: treesize reduction 32, result has 91.6 percent of original size [2021-06-05 06:42:17,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:18,009 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:18,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:42:18,011 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:18,156 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-05 06:42:18,156 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:18,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:18,179 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:42:18,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:42:18,181 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:18,316 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-05 06:42:18,316 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:18,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:18,343 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:42:18,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:42:18,344 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:18,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:18,357 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:42:18,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:42:18,358 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:18,482 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-05 06:42:18,482 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:18,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:18,504 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:42:18,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:42:18,507 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:18,609 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-05 06:42:18,609 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:18,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:18,628 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:18,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:42:18,630 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:18,726 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:18,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:18,742 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:18,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:42:18,748 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:18,840 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:18,855 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:42:18,856 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 24 variables, input treesize:563, output treesize:232 [2021-06-05 06:42:19,020 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2021-06-05 06:42:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:19,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967167168] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:19,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:19,051 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:42:19,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108470665] [2021-06-05 06:42:19,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:19,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:19,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:19,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:19,051 INFO L87 Difference]: Start difference. First operand 2044 states and 7012 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:19,316 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 06:42:19,990 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 06:42:20,154 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 06:42:20,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:20,396 INFO L93 Difference]: Finished difference Result 2980 states and 9896 transitions. [2021-06-05 06:42:20,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:42:20,396 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:20,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:20,400 INFO L225 Difference]: With dead ends: 2980 [2021-06-05 06:42:20,400 INFO L226 Difference]: Without dead ends: 2950 [2021-06-05 06:42:20,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1602.3ms TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:42:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-06-05 06:42:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2027. [2021-06-05 06:42:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2026 states have (on average 3.428923988153998) internal successors, (6947), 2026 states have internal predecessors, (6947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 6947 transitions. [2021-06-05 06:42:20,429 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 6947 transitions. Word has length 26 [2021-06-05 06:42:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:20,429 INFO L482 AbstractCegarLoop]: Abstraction has 2027 states and 6947 transitions. [2021-06-05 06:42:20,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 6947 transitions. [2021-06-05 06:42:20,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:20,431 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:20,431 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:20,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2992,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:20,632 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:20,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:20,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1104919697, now seen corresponding path program 45 times [2021-06-05 06:42:20,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:20,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639223779] [2021-06-05 06:42:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:20,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:20,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639223779] [2021-06-05 06:42:20,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639223779] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:20,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526525502] [2021-06-05 06:42:20,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 06:42:20,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:42:20,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:20,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:20,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:21,235 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-05 06:42:21,342 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_343, v_prenex_344, v_prenex_345], 3=[v_prenex_347]} [2021-06-05 06:42:21,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,358 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:21,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 06:42:21,359 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:21,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 06:42:21,373 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,687 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2021-06-05 06:42:21,688 INFO L628 ElimStorePlain]: treesize reduction 21, result has 94.6 percent of original size [2021-06-05 06:42:21,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,702 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:21,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:42:21,706 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,717 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:21,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:42:21,719 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,856 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:42:21,857 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:21,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,870 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:21,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:42:21,871 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,881 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:21,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:42:21,883 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:22,008 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 06:42:22,008 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:22,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:22,021 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:22,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:22,024 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:22,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:22,034 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:22,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:42:22,035 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:22,154 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 06:42:22,154 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:22,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:22,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:22,165 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:22,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 06:42:22,168 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:22,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:22,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:22,177 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:42:22,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 06:42:22,178 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:22,275 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:22,280 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:42:22,280 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:425, output treesize:180 [2021-06-05 06:42:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:22,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526525502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:22,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:22,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:42:22,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80927485] [2021-06-05 06:42:22,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:22,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:22,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:22,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:22,412 INFO L87 Difference]: Start difference. First operand 2027 states and 6947 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:23,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:23,022 INFO L93 Difference]: Finished difference Result 2615 states and 8782 transitions. [2021-06-05 06:42:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 06:42:23,022 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:23,026 INFO L225 Difference]: With dead ends: 2615 [2021-06-05 06:42:23,026 INFO L226 Difference]: Without dead ends: 2590 [2021-06-05 06:42:23,026 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 955.0ms TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2021-06-05 06:42:23,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-06-05 06:42:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2027. [2021-06-05 06:42:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2026 states have (on average 3.430898321816387) internal successors, (6951), 2026 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 6951 transitions. [2021-06-05 06:42:23,049 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 6951 transitions. Word has length 26 [2021-06-05 06:42:23,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:23,050 INFO L482 AbstractCegarLoop]: Abstraction has 2027 states and 6951 transitions. [2021-06-05 06:42:23,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:23,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 6951 transitions. [2021-06-05 06:42:23,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:23,052 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:23,052 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:23,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3035,100 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:23,252 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:23,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:23,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1379621035, now seen corresponding path program 46 times [2021-06-05 06:42:23,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:23,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677874954] [2021-06-05 06:42:23,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:23,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:23,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677874954] [2021-06-05 06:42:23,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677874954] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:23,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301916002] [2021-06-05 06:42:23,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:23,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:42:23,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:23,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:42:23,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:24,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,073 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:24,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 06:42:24,079 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,099 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:24,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:42:24,100 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,444 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-06-05 06:42:24,445 INFO L628 ElimStorePlain]: treesize reduction 33, result has 92.4 percent of original size [2021-06-05 06:42:24,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,465 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:24,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:42:24,469 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,489 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:24,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:24,490 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,800 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2021-06-05 06:42:24,800 INFO L628 ElimStorePlain]: treesize reduction 14, result has 96.3 percent of original size [2021-06-05 06:42:24,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,819 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:24,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:42:24,822 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,840 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:24,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:24,841 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:25,128 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2021-06-05 06:42:25,129 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.4 percent of original size [2021-06-05 06:42:25,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:25,151 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:42:25,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:42:25,155 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:25,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:25,174 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:42:25,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:42:25,175 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:25,317 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 06:42:25,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:25,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:25,336 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:25,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:42:25,337 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:25,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:25,350 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:25,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:42:25,354 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:25,480 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 06:42:25,480 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:25,499 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:42:25,499 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 11 variables, input treesize:457, output treesize:247 [2021-06-05 06:42:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:25,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301916002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:25,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:25,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:42:25,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987806310] [2021-06-05 06:42:25,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:25,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:25,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:25,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:25,655 INFO L87 Difference]: Start difference. First operand 2027 states and 6951 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:26,284 INFO L93 Difference]: Finished difference Result 2605 states and 8786 transitions. [2021-06-05 06:42:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:42:26,285 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:26,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:26,288 INFO L225 Difference]: With dead ends: 2605 [2021-06-05 06:42:26,288 INFO L226 Difference]: Without dead ends: 2590 [2021-06-05 06:42:26,288 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 916.7ms TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:42:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-06-05 06:42:26,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2027. [2021-06-05 06:42:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2026 states have (on average 3.430898321816387) internal successors, (6951), 2026 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 6951 transitions. [2021-06-05 06:42:26,312 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 6951 transitions. Word has length 26 [2021-06-05 06:42:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:26,312 INFO L482 AbstractCegarLoop]: Abstraction has 2027 states and 6951 transitions. [2021-06-05 06:42:26,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 6951 transitions. [2021-06-05 06:42:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:26,315 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:26,315 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:26,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3072,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:26,517 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:26,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:26,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1044929515, now seen corresponding path program 55 times [2021-06-05 06:42:26,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:26,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022586526] [2021-06-05 06:42:26,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:26,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:26,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022586526] [2021-06-05 06:42:26,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022586526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:26,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567246692] [2021-06-05 06:42:26,667 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:26,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:26,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:27,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:27,086 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:42:27,094 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:42:27,103 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:42:27,111 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:42:27,120 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:42:27,128 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:42:27,137 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:42:27,145 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:42:27,154 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:42:27,161 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:27,167 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:42:27,174 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:42:27,181 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:42:27,188 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:27,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:27,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:42:27,191 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:27,211 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:42:27,212 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:42:27,212 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:42:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:27,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567246692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:27,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:27,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 06:42:27,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396893812] [2021-06-05 06:42:27,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:27,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:27,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:27,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:27,235 INFO L87 Difference]: Start difference. First operand 2027 states and 6951 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:27,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:27,792 INFO L93 Difference]: Finished difference Result 2632 states and 8515 transitions. [2021-06-05 06:42:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:42:27,792 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:27,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:27,795 INFO L225 Difference]: With dead ends: 2632 [2021-06-05 06:42:27,795 INFO L226 Difference]: Without dead ends: 2595 [2021-06-05 06:42:27,796 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 564.6ms TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:42:27,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2021-06-05 06:42:27,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2051. [2021-06-05 06:42:27,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2050 states have (on average 3.430731707317073) internal successors, (7033), 2050 states have internal predecessors, (7033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:27,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 7033 transitions. [2021-06-05 06:42:27,820 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 7033 transitions. Word has length 26 [2021-06-05 06:42:27,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:27,820 INFO L482 AbstractCegarLoop]: Abstraction has 2051 states and 7033 transitions. [2021-06-05 06:42:27,820 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:27,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 7033 transitions. [2021-06-05 06:42:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:27,822 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:27,823 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:28,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3147,102 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:28,024 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:28,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:28,024 INFO L82 PathProgramCache]: Analyzing trace with hash 2112804079, now seen corresponding path program 56 times [2021-06-05 06:42:28,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:28,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481562297] [2021-06-05 06:42:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:28,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:28,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481562297] [2021-06-05 06:42:28,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481562297] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:28,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286360210] [2021-06-05 06:42:28,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:28,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:42:28,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:28,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:28,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:28,446 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_357], 5=[v_prenex_361, v_prenex_359]} [2021-06-05 06:42:28,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:28,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:28,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:28,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:28,452 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:28,535 INFO L628 ElimStorePlain]: treesize reduction 133, result has 44.1 percent of original size [2021-06-05 06:42:28,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:28,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:28,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:28,539 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:28,564 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:28,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:28,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:28,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:28,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 06:42:28,569 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:28,592 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:28,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:28,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:28,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:28,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-05 06:42:28,598 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:28,620 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:28,622 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 06:42:28,622 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:22 [2021-06-05 06:42:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:28,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286360210] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:28,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:28,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 06:42:28,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345622093] [2021-06-05 06:42:28,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:28,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:28,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:28,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:28,662 INFO L87 Difference]: Start difference. First operand 2051 states and 7033 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:29,471 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-06-05 06:42:29,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:29,630 INFO L93 Difference]: Finished difference Result 2527 states and 8437 transitions. [2021-06-05 06:42:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:42:29,631 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:29,634 INFO L225 Difference]: With dead ends: 2527 [2021-06-05 06:42:29,634 INFO L226 Difference]: Without dead ends: 2481 [2021-06-05 06:42:29,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 923.1ms TimeCoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:42:29,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2021-06-05 06:42:29,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2047. [2021-06-05 06:42:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2046 states have (on average 3.424731182795699) internal successors, (7007), 2046 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 7007 transitions. [2021-06-05 06:42:29,658 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 7007 transitions. Word has length 26 [2021-06-05 06:42:29,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:29,658 INFO L482 AbstractCegarLoop]: Abstraction has 2047 states and 7007 transitions. [2021-06-05 06:42:29,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:29,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 7007 transitions. [2021-06-05 06:42:29,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:29,660 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:29,660 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:29,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3237,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:29,873 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:29,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:29,873 INFO L82 PathProgramCache]: Analyzing trace with hash 455537647, now seen corresponding path program 57 times [2021-06-05 06:42:29,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:29,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575746933] [2021-06-05 06:42:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:30,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:30,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:30,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575746933] [2021-06-05 06:42:30,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575746933] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:30,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158749387] [2021-06-05 06:42:30,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:30,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:42:30,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:30,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:30,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:30,526 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:42:30,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:30,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:30,837 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-05 06:42:30,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 06:42:30,841 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:30,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:30,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:30,870 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:42:30,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-05 06:42:30,874 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:31,237 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-06-05 06:42:31,238 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:31,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:31,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:31,272 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:31,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-05 06:42:31,279 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:31,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:31,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:31,308 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:42:31,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-05 06:42:31,310 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:31,672 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-05 06:42:31,672 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:31,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:31,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:31,714 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:31,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-05 06:42:31,718 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:31,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:31,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:31,745 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:42:31,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-05 06:42:31,746 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:32,343 WARN L205 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 135 [2021-06-05 06:42:32,344 INFO L628 ElimStorePlain]: treesize reduction 3, result has 99.5 percent of original size [2021-06-05 06:42:32,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:32,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:32,379 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:32,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-05 06:42:32,380 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:32,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:32,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:32,403 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:42:32,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-05 06:42:32,404 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:32,675 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-06-05 06:42:32,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:32,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:32,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:32,708 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:32,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 35 [2021-06-05 06:42:32,709 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:32,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:32,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:32,733 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:32,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-05 06:42:32,738 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,227 WARN L205 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2021-06-05 06:42:33,227 INFO L628 ElimStorePlain]: treesize reduction 28, result has 94.5 percent of original size [2021-06-05 06:42:33,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,255 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:42:33,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:42:33,257 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,281 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:33,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:42:33,285 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,728 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2021-06-05 06:42:33,729 INFO L628 ElimStorePlain]: treesize reduction 26, result has 94.1 percent of original size [2021-06-05 06:42:33,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,761 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:33,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2021-06-05 06:42:33,764 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,786 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:42:33,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-05 06:42:33,788 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,992 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:42:33,993 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:33,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:34,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:34,021 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:42:34,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-05 06:42:34,022 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:34,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:34,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:34,049 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:34,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 06:42:34,053 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:34,367 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2021-06-05 06:42:34,367 INFO L628 ElimStorePlain]: treesize reduction 24, result has 92.8 percent of original size [2021-06-05 06:42:34,378 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-06-05 06:42:34,378 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:721, output treesize:301 [2021-06-05 06:42:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:34,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158749387] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:34,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:34,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:42:34,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273495023] [2021-06-05 06:42:34,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:42:34,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:34,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:42:34,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:42:34,514 INFO L87 Difference]: Start difference. First operand 2047 states and 7007 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:35,583 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 06:42:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:35,797 INFO L93 Difference]: Finished difference Result 2628 states and 8841 transitions. [2021-06-05 06:42:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:42:35,797 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:35,801 INFO L225 Difference]: With dead ends: 2628 [2021-06-05 06:42:35,801 INFO L226 Difference]: Without dead ends: 2613 [2021-06-05 06:42:35,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1299.9ms TimeCoverageRelationStatistics Valid=220, Invalid=1040, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:42:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2021-06-05 06:42:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 2062. [2021-06-05 06:42:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2061 states have (on average 3.430373605046094) internal successors, (7070), 2061 states have internal predecessors, (7070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 7070 transitions. [2021-06-05 06:42:35,826 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 7070 transitions. Word has length 26 [2021-06-05 06:42:35,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:35,826 INFO L482 AbstractCegarLoop]: Abstraction has 2062 states and 7070 transitions. [2021-06-05 06:42:35,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:35,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 7070 transitions. [2021-06-05 06:42:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:35,828 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:35,828 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:36,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3251 [2021-06-05 06:42:36,029 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:36,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:36,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1197737873, now seen corresponding path program 47 times [2021-06-05 06:42:36,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:36,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495181018] [2021-06-05 06:42:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:36,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:36,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495181018] [2021-06-05 06:42:36,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495181018] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:36,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311810327] [2021-06-05 06:42:36,273 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:36,297 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:42:36,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:36,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:42:36,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:36,661 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 06:42:36,847 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:42:37,142 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2021-06-05 06:42:37,176 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_390, v_prenex_391]} [2021-06-05 06:42:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:37,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:42:37,181 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:37,272 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-05 06:42:37,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:37,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:37,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:37,277 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:37,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:37,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:37,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:37,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:37,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:37,320 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:37,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:37,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:37,324 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:37,376 INFO L628 ElimStorePlain]: treesize reduction 13, result has 79.4 percent of original size [2021-06-05 06:42:37,378 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:42:37,378 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:32 [2021-06-05 06:42:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:37,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311810327] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:37,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:37,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:42:37,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132770437] [2021-06-05 06:42:37,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:37,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:37,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:37,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:37,424 INFO L87 Difference]: Start difference. First operand 2062 states and 7070 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:38,062 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-06-05 06:42:38,524 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 119 [2021-06-05 06:42:39,052 WARN L205 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2021-06-05 06:42:39,522 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 86 [2021-06-05 06:42:39,943 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 125 [2021-06-05 06:42:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:40,247 INFO L93 Difference]: Finished difference Result 2678 states and 8891 transitions. [2021-06-05 06:42:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:42:40,247 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:40,251 INFO L225 Difference]: With dead ends: 2678 [2021-06-05 06:42:40,251 INFO L226 Difference]: Without dead ends: 2648 [2021-06-05 06:42:40,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 2991.0ms TimeCoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:42:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2021-06-05 06:42:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2073. [2021-06-05 06:42:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2072 states have (on average 3.4305019305019306) internal successors, (7108), 2072 states have internal predecessors, (7108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:40,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 7108 transitions. [2021-06-05 06:42:40,275 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 7108 transitions. Word has length 26 [2021-06-05 06:42:40,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:40,275 INFO L482 AbstractCegarLoop]: Abstraction has 2073 states and 7108 transitions. [2021-06-05 06:42:40,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 7108 transitions. [2021-06-05 06:42:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:40,277 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:40,277 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:40,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3316 [2021-06-05 06:42:40,478 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:40,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:40,478 INFO L82 PathProgramCache]: Analyzing trace with hash 352643691, now seen corresponding path program 58 times [2021-06-05 06:42:40,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:40,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884948422] [2021-06-05 06:42:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:40,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:40,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884948422] [2021-06-05 06:42:40,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884948422] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:40,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986313983] [2021-06-05 06:42:40,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:40,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:42:40,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:40,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:40,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:41,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:42:41,072 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:42:41,080 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:42:41,088 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:42:41,096 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:41,104 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:42:41,112 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:42:41,119 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:42:41,125 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:42:41,132 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:42:41,139 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:42:41,146 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:42:41,153 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:41,159 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:42:41,166 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:41,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:42:41,169 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,188 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:42:41,189 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:42:41,189 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:42:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:41,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986313983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:41,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:41,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-05 06:42:41,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627617338] [2021-06-05 06:42:41,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:42:41,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:41,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:42:41,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:42:41,211 INFO L87 Difference]: Start difference. First operand 2073 states and 7108 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:42,151 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-06-05 06:42:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:42,467 INFO L93 Difference]: Finished difference Result 3338 states and 10716 transitions. [2021-06-05 06:42:42,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:42:42,468 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:42,472 INFO L225 Difference]: With dead ends: 3338 [2021-06-05 06:42:42,472 INFO L226 Difference]: Without dead ends: 3295 [2021-06-05 06:42:42,472 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1020.5ms TimeCoverageRelationStatistics Valid=298, Invalid=1262, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 06:42:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2021-06-05 06:42:42,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2202. [2021-06-05 06:42:42,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2201 states have (on average 3.452975920036347) internal successors, (7600), 2201 states have internal predecessors, (7600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 7600 transitions. [2021-06-05 06:42:42,501 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 7600 transitions. Word has length 26 [2021-06-05 06:42:42,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:42,501 INFO L482 AbstractCegarLoop]: Abstraction has 2202 states and 7600 transitions. [2021-06-05 06:42:42,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 7600 transitions. [2021-06-05 06:42:42,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:42,503 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:42,504 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:42,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3331 [2021-06-05 06:42:42,704 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:42,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:42,704 INFO L82 PathProgramCache]: Analyzing trace with hash 392132503, now seen corresponding path program 48 times [2021-06-05 06:42:42,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:42,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352207167] [2021-06-05 06:42:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:42,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:42,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352207167] [2021-06-05 06:42:42,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352207167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:42,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806950986] [2021-06-05 06:42:42,955 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:42,980 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:42:42,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:42,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:42:42,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:43,419 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 06:42:43,780 INFO L446 ElimStorePlain]: Different costs {28=[v_prenex_418], 45=[A]} [2021-06-05 06:42:43,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,811 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:42:43,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 33 [2021-06-05 06:42:43,812 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:43,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,844 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:42:43,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 34 [2021-06-05 06:42:43,858 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:43,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,891 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:42:43,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 37 [2021-06-05 06:42:43,895 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:43,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,914 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-05 06:42:43,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:42:43,915 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:43,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,931 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-05 06:42:43,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:42:43,932 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:43,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,955 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:42:43,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 30 [2021-06-05 06:42:43,957 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,294 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 115 [2021-06-05 06:42:44,295 INFO L628 ElimStorePlain]: treesize reduction 162, result has 71.7 percent of original size [2021-06-05 06:42:44,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,315 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:44,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 36 [2021-06-05 06:42:44,318 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,340 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:42:44,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 29 [2021-06-05 06:42:44,342 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,364 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:42:44,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 31 [2021-06-05 06:42:44,367 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,388 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:44,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 36 [2021-06-05 06:42:44,391 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,421 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:42:44,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-06-05 06:42:44,423 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,439 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:44,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2021-06-05 06:42:44,445 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,595 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-05 06:42:44,595 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:44,610 INFO L550 ElimStorePlain]: Start of recursive call 1: 14 dim-0 vars, 2 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:42:44,610 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 16 variables, input treesize:801, output treesize:513 [2021-06-05 06:42:44,779 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2021-06-05 06:42:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:44,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806950986] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:44,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:44,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:42:44,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999793367] [2021-06-05 06:42:44,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:42:44,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:44,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:42:44,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:42:44,892 INFO L87 Difference]: Start difference. First operand 2202 states and 7600 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:45,607 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-05 06:42:46,024 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2021-06-05 06:42:46,534 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2021-06-05 06:42:46,802 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2021-06-05 06:42:47,223 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-06-05 06:42:47,830 WARN L205 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-06-05 06:42:48,586 WARN L205 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-06-05 06:42:48,798 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-06-05 06:42:49,094 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2021-06-05 06:42:49,384 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-06-05 06:42:49,548 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-06-05 06:42:50,026 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2021-06-05 06:42:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:50,303 INFO L93 Difference]: Finished difference Result 3312 states and 10745 transitions. [2021-06-05 06:42:50,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:42:50,303 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:50,308 INFO L225 Difference]: With dead ends: 3312 [2021-06-05 06:42:50,308 INFO L226 Difference]: Without dead ends: 3267 [2021-06-05 06:42:50,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 5262.4ms TimeCoverageRelationStatistics Valid=404, Invalid=2046, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:42:50,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2021-06-05 06:42:50,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2225. [2021-06-05 06:42:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2224 states have (on average 3.459982014388489) internal successors, (7695), 2224 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:50,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 7695 transitions. [2021-06-05 06:42:50,336 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 7695 transitions. Word has length 26 [2021-06-05 06:42:50,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:50,336 INFO L482 AbstractCegarLoop]: Abstraction has 2225 states and 7695 transitions. [2021-06-05 06:42:50,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:50,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 7695 transitions. [2021-06-05 06:42:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:50,338 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:50,338 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:50,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3421,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:50,539 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:50,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:50,539 INFO L82 PathProgramCache]: Analyzing trace with hash -658448197, now seen corresponding path program 49 times [2021-06-05 06:42:50,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:50,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365563508] [2021-06-05 06:42:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:50,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:50,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365563508] [2021-06-05 06:42:50,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365563508] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:50,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101182377] [2021-06-05 06:42:50,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:50,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:42:50,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:51,025 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-06-05 06:42:51,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:51,114 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:51,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:42:51,115 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:51,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:51,126 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:51,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:42:51,127 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:51,446 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 122 [2021-06-05 06:42:51,447 INFO L628 ElimStorePlain]: treesize reduction 71, result has 83.9 percent of original size [2021-06-05 06:42:51,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:51,462 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:51,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:51,463 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:51,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:51,474 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:51,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:42:51,475 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:51,595 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 06:42:51,595 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:51,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:51,607 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:51,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:42:51,609 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:51,725 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-05 06:42:51,725 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:51,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:51,736 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:51,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:42:51,739 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:51,850 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 06:42:51,851 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:51,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:51,862 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:51,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:42:51,866 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:51,969 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 06:42:51,969 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:51,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:51,983 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:51,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:51,987 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:51,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:51,998 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:51,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:42:52,000 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,168 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-05 06:42:52,169 INFO L628 ElimStorePlain]: treesize reduction 18, result has 92.1 percent of original size [2021-06-05 06:42:52,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,180 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:52,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:42:52,181 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,256 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:52,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,266 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:52,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:42:52,267 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,339 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:52,345 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:42:52,345 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:503, output treesize:150 [2021-06-05 06:42:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:52,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101182377] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:52,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:52,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:42:52,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530832132] [2021-06-05 06:42:52,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:42:52,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:52,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:42:52,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:42:52,460 INFO L87 Difference]: Start difference. First operand 2225 states and 7695 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:53,334 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-05 06:42:53,451 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-06-05 06:42:53,619 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-05 06:42:53,760 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-06-05 06:42:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:54,118 INFO L93 Difference]: Finished difference Result 3319 states and 10983 transitions. [2021-06-05 06:42:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:42:54,119 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:54,123 INFO L225 Difference]: With dead ends: 3319 [2021-06-05 06:42:54,123 INFO L226 Difference]: Without dead ends: 3289 [2021-06-05 06:42:54,123 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1674.8ms TimeCoverageRelationStatistics Valid=309, Invalid=1023, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:42:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-06-05 06:42:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2211. [2021-06-05 06:42:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2210 states have (on average 3.4547511312217196) internal successors, (7635), 2210 states have internal predecessors, (7635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 7635 transitions. [2021-06-05 06:42:54,153 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 7635 transitions. Word has length 26 [2021-06-05 06:42:54,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:54,153 INFO L482 AbstractCegarLoop]: Abstraction has 2211 states and 7635 transitions. [2021-06-05 06:42:54,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:54,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 7635 transitions. [2021-06-05 06:42:54,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:54,155 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:54,155 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:54,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3452 [2021-06-05 06:42:54,356 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:54,356 INFO L82 PathProgramCache]: Analyzing trace with hash 578637215, now seen corresponding path program 59 times [2021-06-05 06:42:54,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:54,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106762655] [2021-06-05 06:42:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:54,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:54,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106762655] [2021-06-05 06:42:54,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106762655] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:54,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490465079] [2021-06-05 06:42:54,480 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:54,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:42:54,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:54,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:42:54,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:54,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:42:54,962 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:54,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:54,969 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:54,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:42:54,977 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:54,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:42:54,984 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:54,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:42:54,992 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:54,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:54,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:42:55,004 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:42:55,013 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:42:55,023 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:42:55,032 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:42:55,041 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:42:55,050 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:42:55,059 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:42:55,067 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:55,075 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:55,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:42:55,080 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,102 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:42:55,103 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:42:55,103 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:42:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:55,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490465079] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:55,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:55,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:42:55,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679183672] [2021-06-05 06:42:55,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:42:55,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:55,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:42:55,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:42:55,133 INFO L87 Difference]: Start difference. First operand 2211 states and 7635 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:56,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:56,110 INFO L93 Difference]: Finished difference Result 3809 states and 12432 transitions. [2021-06-05 06:42:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:42:56,110 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:56,115 INFO L225 Difference]: With dead ends: 3809 [2021-06-05 06:42:56,115 INFO L226 Difference]: Without dead ends: 3779 [2021-06-05 06:42:56,116 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 880.3ms TimeCoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:42:56,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2021-06-05 06:42:56,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 2344. [2021-06-05 06:42:56,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 3.458386683738796) internal successors, (8103), 2343 states have internal predecessors, (8103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:56,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 8103 transitions. [2021-06-05 06:42:56,152 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 8103 transitions. Word has length 26 [2021-06-05 06:42:56,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:56,152 INFO L482 AbstractCegarLoop]: Abstraction has 2344 states and 8103 transitions. [2021-06-05 06:42:56,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:56,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 8103 transitions. [2021-06-05 06:42:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:56,154 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:56,154 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:42:56,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3480,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:56,355 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:56,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1882681429, now seen corresponding path program 60 times [2021-06-05 06:42:56,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:56,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804044933] [2021-06-05 06:42:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:56,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:56,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804044933] [2021-06-05 06:42:56,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804044933] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:56,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275159625] [2021-06-05 06:42:56,496 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:56,519 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:42:56,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:56,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:42:56,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:56,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,720 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 06:42:56,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2021-06-05 06:42:56,722 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,746 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 06:42:56,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2021-06-05 06:42:56,750 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,777 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 06:42:56,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2021-06-05 06:42:56,781 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,796 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:42:56,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:42:56,796 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,821 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 06:42:56,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-05 06:42:56,828 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,856 INFO L354 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size [2021-06-05 06:42:56,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 29 [2021-06-05 06:42:56,857 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,874 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:42:56,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:42:56,875 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,898 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 06:42:56,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2021-06-05 06:42:56,899 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,915 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:42:56,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:42:56,915 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,940 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 06:42:56,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 26 [2021-06-05 06:42:56,941 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,966 INFO L354 Elim1Store]: treesize reduction 19, result has 38.7 percent of original size [2021-06-05 06:42:56,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 30 [2021-06-05 06:42:56,967 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,983 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:42:56,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:42:56,984 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:56,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:56,999 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:42:56,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:42:57,000 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:57,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:57,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:57,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:57,022 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 06:42:57,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-05 06:42:57,023 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:57,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:57,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:57,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:57,045 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:57,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 43 [2021-06-05 06:42:57,052 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:57,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:57,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:57,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:57,061 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:42:57,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:42:57,061 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:57,139 INFO L628 ElimStorePlain]: treesize reduction 109, result has 41.7 percent of original size [2021-06-05 06:42:57,140 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:42:57,140 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:705, output treesize:78 [2021-06-05 06:42:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:42:57,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275159625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:57,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:57,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-05 06:42:57,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828440417] [2021-06-05 06:42:57,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:42:57,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:57,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:42:57,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:42:57,224 INFO L87 Difference]: Start difference. First operand 2344 states and 8103 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:58,511 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-06-05 06:42:58,645 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 06:42:59,001 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 06:42:59,178 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 06:42:59,723 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-05 06:42:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:59,863 INFO L93 Difference]: Finished difference Result 4305 states and 13885 transitions. [2021-06-05 06:42:59,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:42:59,863 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:42:59,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:59,869 INFO L225 Difference]: With dead ends: 4305 [2021-06-05 06:42:59,869 INFO L226 Difference]: Without dead ends: 4252 [2021-06-05 06:42:59,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 2315.1ms TimeCoverageRelationStatistics Valid=556, Invalid=2096, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:42:59,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2021-06-05 06:42:59,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 2347. [2021-06-05 06:42:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2346 states have (on average 3.4578005115089514) internal successors, (8112), 2346 states have internal predecessors, (8112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 8112 transitions. [2021-06-05 06:42:59,905 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 8112 transitions. Word has length 26 [2021-06-05 06:42:59,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:59,905 INFO L482 AbstractCegarLoop]: Abstraction has 2347 states and 8112 transitions. [2021-06-05 06:42:59,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 8112 transitions. [2021-06-05 06:42:59,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:59,907 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:59,907 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:00,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3570 [2021-06-05 06:43:00,108 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:00,108 INFO L82 PathProgramCache]: Analyzing trace with hash 534773347, now seen corresponding path program 50 times [2021-06-05 06:43:00,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:00,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563873449] [2021-06-05 06:43:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:00,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:00,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563873449] [2021-06-05 06:43:00,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563873449] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:00,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925484017] [2021-06-05 06:43:00,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:00,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:00,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:00,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:43:00,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:00,676 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 06:43:00,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:00,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:00,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:00,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:00,983 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:43:00,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 26 [2021-06-05 06:43:00,985 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:00,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:00,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:00,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:01,000 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-05 06:43:01,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:43:01,000 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:01,430 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 124 [2021-06-05 06:43:01,431 INFO L628 ElimStorePlain]: treesize reduction 296, result has 58.8 percent of original size [2021-06-05 06:43:01,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:01,454 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:43:01,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:43:01,456 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:01,633 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 06:43:01,633 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:01,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:01,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:01,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:01,665 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:43:01,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2021-06-05 06:43:01,669 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:01,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:01,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:01,690 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:01,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-05 06:43:01,693 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:01,987 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2021-06-05 06:43:01,988 INFO L628 ElimStorePlain]: treesize reduction 27, result has 93.0 percent of original size [2021-06-05 06:43:01,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:01,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:01,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:02,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:02,015 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-05 06:43:02,018 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:02,039 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-05 06:43:02,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:43:02,039 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,160 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-05 06:43:02,161 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,183 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:43:02,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:43:02,185 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,323 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:43:02,324 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,343 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:43:02,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 27 [2021-06-05 06:43:02,347 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,466 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:43:02,466 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,480 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 28 [2021-06-05 06:43:02,484 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,600 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 06:43:02,601 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:02,622 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:43:02,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2021-06-05 06:43:02,625 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,729 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:43:02,730 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,735 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:43:02,735 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:785, output treesize:295 [2021-06-05 06:43:02,948 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-06-05 06:43:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:03,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925484017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:03,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:03,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:43:03,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598787751] [2021-06-05 06:43:03,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:43:03,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:03,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:43:03,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:43:03,080 INFO L87 Difference]: Start difference. First operand 2347 states and 8112 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:03,707 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-06-05 06:43:03,984 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-06-05 06:43:04,265 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-06-05 06:43:04,519 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:43:04,645 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-06-05 06:43:04,981 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 06:43:05,337 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2021-06-05 06:43:05,547 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-05 06:43:05,954 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2021-06-05 06:43:06,210 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-06-05 06:43:06,392 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-06-05 06:43:06,839 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2021-06-05 06:43:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:07,314 INFO L93 Difference]: Finished difference Result 3241 states and 10733 transitions. [2021-06-05 06:43:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 06:43:07,314 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:43:07,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:07,318 INFO L225 Difference]: With dead ends: 3241 [2021-06-05 06:43:07,318 INFO L226 Difference]: Without dead ends: 3211 [2021-06-05 06:43:07,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 4047.2ms TimeCoverageRelationStatistics Valid=353, Invalid=2197, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:43:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-06-05 06:43:07,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2360. [2021-06-05 06:43:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2359 states have (on average 3.454429843153879) internal successors, (8149), 2359 states have internal predecessors, (8149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 8149 transitions. [2021-06-05 06:43:07,351 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 8149 transitions. Word has length 26 [2021-06-05 06:43:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:07,351 INFO L482 AbstractCegarLoop]: Abstraction has 2360 states and 8149 transitions. [2021-06-05 06:43:07,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:07,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 8149 transitions. [2021-06-05 06:43:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:07,353 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:07,353 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:07,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3600,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:07,565 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:07,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:07,565 INFO L82 PathProgramCache]: Analyzing trace with hash -849869469, now seen corresponding path program 51 times [2021-06-05 06:43:07,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:07,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749635138] [2021-06-05 06:43:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:07,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:07,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749635138] [2021-06-05 06:43:07,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749635138] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:07,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119927424] [2021-06-05 06:43:07,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:07,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:43:07,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:07,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:43:07,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:08,388 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:43:08,598 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 06:43:08,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:08,692 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:08,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:43:08,694 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:09,070 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 123 [2021-06-05 06:43:09,070 INFO L628 ElimStorePlain]: treesize reduction 130, result has 76.2 percent of original size [2021-06-05 06:43:09,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:09,084 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:09,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:43:09,085 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:09,239 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:43:09,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:09,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:09,252 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:09,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:43:09,255 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:09,413 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:43:09,413 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:09,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:09,426 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:09,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:43:09,427 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:09,573 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:43:09,573 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:09,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:09,585 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:09,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:43:09,589 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:09,728 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 06:43:09,728 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:09,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:09,740 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:09,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:43:09,741 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:09,876 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 06:43:09,877 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:09,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:09,891 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:09,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:43:09,892 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:09,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:09,901 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:09,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:43:09,902 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:10,012 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:43:10,012 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:10,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:10,025 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:10,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:43:10,029 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:10,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:10,039 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:10,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:43:10,042 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:10,212 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-05 06:43:10,213 INFO L628 ElimStorePlain]: treesize reduction 23, result has 90.6 percent of original size [2021-06-05 06:43:10,220 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:43:10,220 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:156 [2021-06-05 06:43:10,368 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-06-05 06:43:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:10,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119927424] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:10,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:10,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:43:10,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157057566] [2021-06-05 06:43:10,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:43:10,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:10,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:43:10,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:43:10,409 INFO L87 Difference]: Start difference. First operand 2360 states and 8149 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:11,242 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2021-06-05 06:43:11,550 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2021-06-05 06:43:11,769 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-06-05 06:43:11,978 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2021-06-05 06:43:12,343 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:43:12,804 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2021-06-05 06:43:13,225 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2021-06-05 06:43:13,617 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 123 [2021-06-05 06:43:13,826 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 06:43:14,332 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2021-06-05 06:43:14,749 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 127 [2021-06-05 06:43:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:15,244 INFO L93 Difference]: Finished difference Result 3613 states and 11812 transitions. [2021-06-05 06:43:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:43:15,244 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:43:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:15,249 INFO L225 Difference]: With dead ends: 3613 [2021-06-05 06:43:15,249 INFO L226 Difference]: Without dead ends: 3568 [2021-06-05 06:43:15,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 4879.5ms TimeCoverageRelationStatistics Valid=358, Invalid=1712, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:43:15,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2021-06-05 06:43:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 2356. [2021-06-05 06:43:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2355 states have (on average 3.456900212314225) internal successors, (8141), 2355 states have internal predecessors, (8141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 8141 transitions. [2021-06-05 06:43:15,280 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 8141 transitions. Word has length 26 [2021-06-05 06:43:15,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:15,280 INFO L482 AbstractCegarLoop]: Abstraction has 2356 states and 8141 transitions. [2021-06-05 06:43:15,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:15,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 8141 transitions. [2021-06-05 06:43:15,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:15,283 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:15,283 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:15,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3641,112 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:15,485 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:15,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:15,485 INFO L82 PathProgramCache]: Analyzing trace with hash 955312879, now seen corresponding path program 52 times [2021-06-05 06:43:15,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:15,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838977490] [2021-06-05 06:43:15,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:15,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:15,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838977490] [2021-06-05 06:43:15,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838977490] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:15,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062894126] [2021-06-05 06:43:15,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:15,836 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:15,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:15,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:43:15,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:16,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:16,241 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:16,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 06:43:16,243 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:16,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:16,254 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:16,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 06:43:16,257 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:16,557 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2021-06-05 06:43:16,557 INFO L628 ElimStorePlain]: treesize reduction 21, result has 94.3 percent of original size [2021-06-05 06:43:16,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:16,570 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:16,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:43:16,572 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:16,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:16,583 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:16,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:43:16,584 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:16,725 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 06:43:16,725 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:16,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:16,738 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:16,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:43:16,740 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:16,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:16,749 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:16,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:43:16,753 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:16,880 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:43:16,880 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:16,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:16,895 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:16,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:43:16,896 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:16,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:16,908 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:16,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:43:16,912 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:17,045 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 06:43:17,045 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:17,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:17,059 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:17,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-05 06:43:17,060 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:17,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:17,070 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:17,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:43:17,073 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:17,177 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-05 06:43:17,177 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:17,182 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:43:17,182 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:407, output treesize:170 [2021-06-05 06:43:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:17,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062894126] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:17,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:17,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:43:17,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247814902] [2021-06-05 06:43:17,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:43:17,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:17,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:43:17,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:43:17,307 INFO L87 Difference]: Start difference. First operand 2356 states and 8141 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:18,512 INFO L93 Difference]: Finished difference Result 3106 states and 10468 transitions. [2021-06-05 06:43:18,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:43:18,512 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:43:18,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:18,517 INFO L225 Difference]: With dead ends: 3106 [2021-06-05 06:43:18,517 INFO L226 Difference]: Without dead ends: 3081 [2021-06-05 06:43:18,517 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1325.6ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:43:18,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2021-06-05 06:43:18,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 2358. [2021-06-05 06:43:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 2357 states have (on average 3.4560882477725925) internal successors, (8146), 2357 states have internal predecessors, (8146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 8146 transitions. [2021-06-05 06:43:18,544 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 8146 transitions. Word has length 26 [2021-06-05 06:43:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:18,544 INFO L482 AbstractCegarLoop]: Abstraction has 2358 states and 8146 transitions. [2021-06-05 06:43:18,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 8146 transitions. [2021-06-05 06:43:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:18,547 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:18,547 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:18,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3671 [2021-06-05 06:43:18,748 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:18,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:18,748 INFO L82 PathProgramCache]: Analyzing trace with hash -441885819, now seen corresponding path program 61 times [2021-06-05 06:43:18,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:18,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101756176] [2021-06-05 06:43:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:18,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:18,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101756176] [2021-06-05 06:43:18,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101756176] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:18,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482728082] [2021-06-05 06:43:18,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:18,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:43:18,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:19,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:43:19,382 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:43:19,389 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:43:19,396 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:43:19,404 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:43:19,410 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:43:19,417 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:43:19,424 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:43:19,431 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:43:19,439 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:43:19,446 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:43:19,452 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:43:19,459 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:43:19,465 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:43:19,472 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:19,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:43:19,485 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,505 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:43:19,506 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:43:19,506 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:43:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:19,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482728082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:19,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:19,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:43:19,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656384441] [2021-06-05 06:43:19,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:43:19,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:19,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:43:19,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:43:19,543 INFO L87 Difference]: Start difference. First operand 2358 states and 8146 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:20,757 INFO L93 Difference]: Finished difference Result 3316 states and 11054 transitions. [2021-06-05 06:43:20,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:43:20,758 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:43:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:20,762 INFO L225 Difference]: With dead ends: 3316 [2021-06-05 06:43:20,762 INFO L226 Difference]: Without dead ends: 3273 [2021-06-05 06:43:20,762 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 1134.3ms TimeCoverageRelationStatistics Valid=415, Invalid=1477, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:43:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2021-06-05 06:43:20,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2398. [2021-06-05 06:43:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 3.4568210262828534) internal successors, (8286), 2397 states have internal predecessors, (8286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:20,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 8286 transitions. [2021-06-05 06:43:20,793 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 8286 transitions. Word has length 26 [2021-06-05 06:43:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:20,793 INFO L482 AbstractCegarLoop]: Abstraction has 2398 states and 8286 transitions. [2021-06-05 06:43:20,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:20,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 8286 transitions. [2021-06-05 06:43:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:20,795 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:20,795 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:20,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3708 [2021-06-05 06:43:20,996 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:20,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:20,996 INFO L82 PathProgramCache]: Analyzing trace with hash 483608047, now seen corresponding path program 62 times [2021-06-05 06:43:20,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:20,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841047014] [2021-06-05 06:43:20,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:21,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:21,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841047014] [2021-06-05 06:43:21,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841047014] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:21,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260173693] [2021-06-05 06:43:21,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:21,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:21,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:21,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:43:21,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:21,542 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_497], 5=[v_prenex_493, v_prenex_495]} [2021-06-05 06:43:21,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:21,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:21,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:21,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:21,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:43:21,555 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:21,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:21,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:21,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:21,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:43:21,561 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:21,659 INFO L628 ElimStorePlain]: treesize reduction 147, result has 42.1 percent of original size [2021-06-05 06:43:21,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:21,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-05 06:43:21,664 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:21,695 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:21,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:21,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:21,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-05 06:43:21,701 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:21,729 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:21,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:21,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:21,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:21,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:21,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 06:43:21,734 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:21,758 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:21,760 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:43:21,760 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:307, output treesize:32 [2021-06-05 06:43:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:21,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260173693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:21,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:21,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:43:21,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746277421] [2021-06-05 06:43:21,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:43:21,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:21,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:43:21,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:43:21,813 INFO L87 Difference]: Start difference. First operand 2398 states and 8286 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:23,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:23,301 INFO L93 Difference]: Finished difference Result 3303 states and 11080 transitions. [2021-06-05 06:43:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:43:23,301 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:43:23,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:23,306 INFO L225 Difference]: With dead ends: 3303 [2021-06-05 06:43:23,306 INFO L226 Difference]: Without dead ends: 3269 [2021-06-05 06:43:23,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1470.9ms TimeCoverageRelationStatistics Valid=478, Invalid=1592, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:43:23,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2021-06-05 06:43:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2372. [2021-06-05 06:43:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2371 states have (on average 3.4571910586250527) internal successors, (8197), 2371 states have internal predecessors, (8197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 8197 transitions. [2021-06-05 06:43:23,334 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 8197 transitions. Word has length 26 [2021-06-05 06:43:23,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:23,334 INFO L482 AbstractCegarLoop]: Abstraction has 2372 states and 8197 transitions. [2021-06-05 06:43:23,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:23,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 8197 transitions. [2021-06-05 06:43:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:23,337 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:23,337 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:23,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3798,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:23,537 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:23,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:23,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1804783987, now seen corresponding path program 53 times [2021-06-05 06:43:23,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:23,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752795795] [2021-06-05 06:43:23,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:23,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:23,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752795795] [2021-06-05 06:43:23,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752795795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:23,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978266125] [2021-06-05 06:43:23,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:23,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:43:23,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:23,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 06:43:23,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:24,216 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:43:24,449 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 66 [2021-06-05 06:43:24,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:24,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:24,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:24,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:43:24,594 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:24,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:24,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:24,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:43:24,599 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:24,680 INFO L628 ElimStorePlain]: treesize reduction 69, result has 56.3 percent of original size [2021-06-05 06:43:24,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:24,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:43:24,684 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:24,712 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:24,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:24,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:24,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:24,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:43:24,717 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:24,742 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:24,744 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:43:24,744 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 9 variables, input treesize:201, output treesize:32 [2021-06-05 06:43:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:24,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978266125] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:24,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:24,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:43:24,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306376198] [2021-06-05 06:43:24,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:43:24,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:24,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:43:24,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:43:24,781 INFO L87 Difference]: Start difference. First operand 2372 states and 8197 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:25,605 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 06:43:26,238 WARN L205 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 108 [2021-06-05 06:43:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:26,401 INFO L93 Difference]: Finished difference Result 3196 states and 10649 transitions. [2021-06-05 06:43:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:43:26,401 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:43:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:26,405 INFO L225 Difference]: With dead ends: 3196 [2021-06-05 06:43:26,405 INFO L226 Difference]: Without dead ends: 3151 [2021-06-05 06:43:26,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1957.1ms TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:43:26,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-06-05 06:43:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2383. [2021-06-05 06:43:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2383 states, 2382 states have (on average 3.4554995801847186) internal successors, (8231), 2382 states have internal predecessors, (8231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 8231 transitions. [2021-06-05 06:43:26,443 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 8231 transitions. Word has length 26 [2021-06-05 06:43:26,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:26,443 INFO L482 AbstractCegarLoop]: Abstraction has 2383 states and 8231 transitions. [2021-06-05 06:43:26,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:26,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 8231 transitions. [2021-06-05 06:43:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:26,446 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:26,446 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:26,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3812 [2021-06-05 06:43:26,646 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:26,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:26,647 INFO L82 PathProgramCache]: Analyzing trace with hash 676615347, now seen corresponding path program 54 times [2021-06-05 06:43:26,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:26,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399466828] [2021-06-05 06:43:26,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:26,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:26,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399466828] [2021-06-05 06:43:26,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399466828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:26,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143693259] [2021-06-05 06:43:26,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:26,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:43:26,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:26,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:43:26,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:27,333 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-05 06:43:27,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:27,424 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-05 06:43:27,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:43:27,427 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:27,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:27,444 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:27,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 36 [2021-06-05 06:43:27,449 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:27,827 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2021-06-05 06:43:27,828 INFO L628 ElimStorePlain]: treesize reduction 32, result has 94.4 percent of original size [2021-06-05 06:43:27,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:27,852 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-06-05 06:43:27,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 30 [2021-06-05 06:43:27,853 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:27,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:27,876 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-05 06:43:27,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 34 [2021-06-05 06:43:27,880 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:28,067 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:43:28,067 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:28,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:28,097 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-06-05 06:43:28,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 31 [2021-06-05 06:43:28,098 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:28,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:28,119 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-05 06:43:28,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 38 [2021-06-05 06:43:28,120 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:28,296 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 06:43:28,297 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:28,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:28,316 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:28,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 38 [2021-06-05 06:43:28,319 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:28,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:28,339 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-05 06:43:28,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 34 [2021-06-05 06:43:28,342 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:28,680 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2021-06-05 06:43:28,680 INFO L628 ElimStorePlain]: treesize reduction 19, result has 95.7 percent of original size [2021-06-05 06:43:28,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:28,704 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-05 06:43:28,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 36 [2021-06-05 06:43:28,708 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:28,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:28,727 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-06-05 06:43:28,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 32 [2021-06-05 06:43:28,729 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:28,872 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 06:43:28,873 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:28,883 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:43:28,883 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:613, output treesize:428 [2021-06-05 06:43:29,031 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-06-05 06:43:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:29,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143693259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:29,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:29,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2021-06-05 06:43:29,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540357203] [2021-06-05 06:43:29,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:43:29,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:29,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:43:29,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:43:29,197 INFO L87 Difference]: Start difference. First operand 2383 states and 8231 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:30,345 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-06-05 06:43:30,805 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2021-06-05 06:43:31,246 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-06-05 06:43:31,427 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2021-06-05 06:43:31,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:31,756 INFO L93 Difference]: Finished difference Result 3199 states and 10757 transitions. [2021-06-05 06:43:31,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:43:31,757 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:43:31,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:31,761 INFO L225 Difference]: With dead ends: 3199 [2021-06-05 06:43:31,761 INFO L226 Difference]: Without dead ends: 3174 [2021-06-05 06:43:31,761 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2472.1ms TimeCoverageRelationStatistics Valid=203, Invalid=1129, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:43:31,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2021-06-05 06:43:31,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2376. [2021-06-05 06:43:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2375 states have (on average 3.4530526315789474) internal successors, (8201), 2375 states have internal predecessors, (8201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 8201 transitions. [2021-06-05 06:43:31,798 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 8201 transitions. Word has length 26 [2021-06-05 06:43:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:31,798 INFO L482 AbstractCegarLoop]: Abstraction has 2376 states and 8201 transitions. [2021-06-05 06:43:31,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 8201 transitions. [2021-06-05 06:43:31,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:31,801 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:31,801 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:32,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3829,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:32,003 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:32,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1700400349, now seen corresponding path program 55 times [2021-06-05 06:43:32,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:32,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310178958] [2021-06-05 06:43:32,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:32,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:32,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310178958] [2021-06-05 06:43:32,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310178958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:32,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435581588] [2021-06-05 06:43:32,232 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:32,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:43:32,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:32,676 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 06:43:32,749 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_536, A, v_prenex_538, v_prenex_539, v_prenex_543, v_prenex_533, v_prenex_535], 3=[v_prenex_541]} [2021-06-05 06:43:32,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:32,764 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:32,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:43:32,765 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:32,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:32,779 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:32,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:43:32,780 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:33,106 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 126 [2021-06-05 06:43:33,106 INFO L628 ElimStorePlain]: treesize reduction 71, result has 84.0 percent of original size [2021-06-05 06:43:33,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:33,122 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:33,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:43:33,123 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:33,282 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 06:43:33,282 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:33,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:33,299 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:33,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:43:33,300 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:33,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:33,311 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:33,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:43:33,312 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:33,430 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:43:33,430 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:33,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:33,445 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:33,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:43:33,449 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:33,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:33,461 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:33,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:43:33,463 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:33,654 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2021-06-05 06:43:33,654 INFO L628 ElimStorePlain]: treesize reduction 18, result has 93.2 percent of original size [2021-06-05 06:43:33,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:33,666 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:33,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:43:33,667 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:33,753 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:33,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:33,764 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:33,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:43:33,768 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:33,847 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:33,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:33,858 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:33,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:43:33,859 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:33,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:33,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:33,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:33,944 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:33,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 06:43:33,947 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:34,018 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:34,024 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:43:34,024 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:507, output treesize:154 [2021-06-05 06:43:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:34,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435581588] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:34,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:34,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:43:34,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498943115] [2021-06-05 06:43:34,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:43:34,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:34,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:43:34,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:43:34,142 INFO L87 Difference]: Start difference. First operand 2376 states and 8201 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:35,005 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:43:35,198 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 06:43:35,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:35,511 INFO L93 Difference]: Finished difference Result 3405 states and 11394 transitions. [2021-06-05 06:43:35,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:43:35,511 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:43:35,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:35,516 INFO L225 Difference]: With dead ends: 3405 [2021-06-05 06:43:35,516 INFO L226 Difference]: Without dead ends: 3375 [2021-06-05 06:43:35,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1508.8ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:43:35,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2021-06-05 06:43:35,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 2353. [2021-06-05 06:43:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2353 states, 2352 states have (on average 3.453231292517007) internal successors, (8122), 2352 states have internal predecessors, (8122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 8122 transitions. [2021-06-05 06:43:35,546 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 8122 transitions. Word has length 26 [2021-06-05 06:43:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:35,546 INFO L482 AbstractCegarLoop]: Abstraction has 2353 states and 8122 transitions. [2021-06-05 06:43:35,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 8122 transitions. [2021-06-05 06:43:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:35,548 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:35,549 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:35,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3864,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:35,749 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:35,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1133811217, now seen corresponding path program 56 times [2021-06-05 06:43:35,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:35,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298206164] [2021-06-05 06:43:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:35,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:35,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:35,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298206164] [2021-06-05 06:43:35,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298206164] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:35,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769788691] [2021-06-05 06:43:35,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:35,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:35,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:35,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:43:35,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:36,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,191 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:36,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:43:36,191 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,201 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:36,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:43:36,204 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,212 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:36,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:43:36,212 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,222 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:36,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 06:43:36,226 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,237 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:36,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:43:36,241 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,252 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:36,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-06-05 06:43:36,253 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,262 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:36,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:43:36,263 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,270 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:36,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:43:36,271 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,280 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:36,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 06:43:36,280 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,291 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:36,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:43:36,293 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,304 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:36,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-06-05 06:43:36,305 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,314 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:36,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:43:36,314 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,323 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:36,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:43:36,324 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,333 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:36,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:43:36,335 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,341 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:36,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:43:36,342 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:36,349 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:36,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:43:36,350 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:36,429 INFO L628 ElimStorePlain]: treesize reduction 16, result has 85.6 percent of original size [2021-06-05 06:43:36,430 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:43:36,430 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:589, output treesize:95 [2021-06-05 06:43:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:36,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769788691] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:36,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:36,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:43:36,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823332714] [2021-06-05 06:43:36,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:43:36,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:36,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:43:36,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:43:36,527 INFO L87 Difference]: Start difference. First operand 2353 states and 8122 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:37,520 INFO L93 Difference]: Finished difference Result 3078 states and 10413 transitions. [2021-06-05 06:43:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:43:37,521 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:43:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:37,525 INFO L225 Difference]: With dead ends: 3078 [2021-06-05 06:43:37,525 INFO L226 Difference]: Without dead ends: 3063 [2021-06-05 06:43:37,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 907.0ms TimeCoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:43:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2021-06-05 06:43:37,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 2355. [2021-06-05 06:43:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2354 states have (on average 3.45624468988955) internal successors, (8136), 2354 states have internal predecessors, (8136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 8136 transitions. [2021-06-05 06:43:37,555 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 8136 transitions. Word has length 26 [2021-06-05 06:43:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:37,555 INFO L482 AbstractCegarLoop]: Abstraction has 2355 states and 8136 transitions. [2021-06-05 06:43:37,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 8136 transitions. [2021-06-05 06:43:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:37,558 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:37,558 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:37,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3894 [2021-06-05 06:43:37,773 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:37,773 INFO L82 PathProgramCache]: Analyzing trace with hash 118535907, now seen corresponding path program 63 times [2021-06-05 06:43:37,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:37,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142392595] [2021-06-05 06:43:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:37,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:37,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142392595] [2021-06-05 06:43:37,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142392595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:37,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646834704] [2021-06-05 06:43:37,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 06:43:37,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:43:37,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:37,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:43:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:38,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,464 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:43:38,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 35 [2021-06-05 06:43:38,466 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,492 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:38,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-05 06:43:38,499 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,527 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:38,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-05 06:43:38,534 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,559 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:43:38,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 06:43:38,561 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,588 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 06:43:38,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 28 [2021-06-05 06:43:38,589 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,607 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:38,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:43:38,608 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,645 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:43:38,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-05 06:43:38,649 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,666 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:38,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:43:38,667 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,684 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:38,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:43:38,685 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,702 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:38,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:43:38,702 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,719 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:38,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:43:38,720 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,746 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:43:38,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-05 06:43:38,748 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,765 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:38,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:43:38,766 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,790 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 06:43:38,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-05 06:43:38,792 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,807 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:38,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:43:38,808 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,817 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:38,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:43:38,818 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,914 INFO L628 ElimStorePlain]: treesize reduction 92, result has 50.3 percent of original size [2021-06-05 06:43:38,915 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:43:38,915 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:75 [2021-06-05 06:43:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:38,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646834704] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:38,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:38,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:43:38,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843321061] [2021-06-05 06:43:38,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:43:38,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:38,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:43:38,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:43:38,996 INFO L87 Difference]: Start difference. First operand 2355 states and 8136 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:41,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:41,413 INFO L93 Difference]: Finished difference Result 3597 states and 11910 transitions. [2021-06-05 06:43:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:43:41,414 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:43:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:41,419 INFO L225 Difference]: With dead ends: 3597 [2021-06-05 06:43:41,419 INFO L226 Difference]: Without dead ends: 3553 [2021-06-05 06:43:41,419 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 2111.1ms TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 06:43:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2021-06-05 06:43:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 2397. [2021-06-05 06:43:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2396 states have (on average 3.451585976627713) internal successors, (8270), 2396 states have internal predecessors, (8270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 8270 transitions. [2021-06-05 06:43:41,460 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 8270 transitions. Word has length 26 [2021-06-05 06:43:41,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:41,460 INFO L482 AbstractCegarLoop]: Abstraction has 2397 states and 8270 transitions. [2021-06-05 06:43:41,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:41,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 8270 transitions. [2021-06-05 06:43:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:41,462 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:41,462 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:41,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3915 [2021-06-05 06:43:41,664 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:41,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1407294025, now seen corresponding path program 57 times [2021-06-05 06:43:41,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:41,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130823574] [2021-06-05 06:43:41,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:41,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:41,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130823574] [2021-06-05 06:43:41,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130823574] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:41,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012364694] [2021-06-05 06:43:41,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:41,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:43:41,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:41,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:41,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:41,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012364694] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:41,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:41,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:43:41,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332976622] [2021-06-05 06:43:41,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:43:41,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:41,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:43:41,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:43:41,820 INFO L87 Difference]: Start difference. First operand 2397 states and 8270 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:42,669 INFO L93 Difference]: Finished difference Result 5478 states and 17219 transitions. [2021-06-05 06:43:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:43:42,670 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:42,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:42,677 INFO L225 Difference]: With dead ends: 5478 [2021-06-05 06:43:42,677 INFO L226 Difference]: Without dead ends: 5478 [2021-06-05 06:43:42,677 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 500.3ms TimeCoverageRelationStatistics Valid=802, Invalid=2858, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:43:42,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2021-06-05 06:43:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 2593. [2021-06-05 06:43:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 2592 states have (on average 3.493827160493827) internal successors, (9056), 2592 states have internal predecessors, (9056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 9056 transitions. [2021-06-05 06:43:42,723 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 9056 transitions. Word has length 28 [2021-06-05 06:43:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:42,723 INFO L482 AbstractCegarLoop]: Abstraction has 2593 states and 9056 transitions. [2021-06-05 06:43:42,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 9056 transitions. [2021-06-05 06:43:42,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:42,726 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:42,726 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:42,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4016,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:42,926 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:42,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:42,927 INFO L82 PathProgramCache]: Analyzing trace with hash 430975181, now seen corresponding path program 58 times [2021-06-05 06:43:42,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:42,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593815198] [2021-06-05 06:43:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:42,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:42,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593815198] [2021-06-05 06:43:42,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593815198] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:42,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284120894] [2021-06-05 06:43:42,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:42,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:42,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:42,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:42,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:43,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284120894] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:43,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:43,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:43:43,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298848574] [2021-06-05 06:43:43,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:43:43,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:43,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:43:43,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:43:43,100 INFO L87 Difference]: Start difference. First operand 2593 states and 9056 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:44,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:44,366 INFO L93 Difference]: Finished difference Result 7165 states and 22139 transitions. [2021-06-05 06:43:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:43:44,366 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:44,377 INFO L225 Difference]: With dead ends: 7165 [2021-06-05 06:43:44,377 INFO L226 Difference]: Without dead ends: 7165 [2021-06-05 06:43:44,378 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 748.8ms TimeCoverageRelationStatistics Valid=1110, Invalid=4590, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 06:43:44,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7165 states. [2021-06-05 06:43:44,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7165 to 2604. [2021-06-05 06:43:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2604 states, 2603 states have (on average 3.4998079139454474) internal successors, (9110), 2603 states have internal predecessors, (9110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:44,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 9110 transitions. [2021-06-05 06:43:44,439 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 9110 transitions. Word has length 28 [2021-06-05 06:43:44,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:44,439 INFO L482 AbstractCegarLoop]: Abstraction has 2604 states and 9110 transitions. [2021-06-05 06:43:44,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:44,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 9110 transitions. [2021-06-05 06:43:44,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:44,442 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:44,442 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:44,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4017,122 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:44,653 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:44,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:44,653 INFO L82 PathProgramCache]: Analyzing trace with hash 997927261, now seen corresponding path program 59 times [2021-06-05 06:43:44,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:44,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029268715] [2021-06-05 06:43:44,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:44,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:44,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029268715] [2021-06-05 06:43:44,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029268715] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:44,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078116849] [2021-06-05 06:43:44,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:44,715 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:43:44,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:44,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:44,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:44,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078116849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:44,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:44,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:43:44,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921469766] [2021-06-05 06:43:44,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:43:44,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:44,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:43:44,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:43:44,850 INFO L87 Difference]: Start difference. First operand 2604 states and 9110 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:46,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:46,080 INFO L93 Difference]: Finished difference Result 6563 states and 20685 transitions. [2021-06-05 06:43:46,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 06:43:46,080 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:46,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:46,090 INFO L225 Difference]: With dead ends: 6563 [2021-06-05 06:43:46,090 INFO L226 Difference]: Without dead ends: 6563 [2021-06-05 06:43:46,091 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 759.4ms TimeCoverageRelationStatistics Valid=1099, Invalid=4451, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 06:43:46,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2021-06-05 06:43:46,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 2552. [2021-06-05 06:43:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2551 states have (on average 3.480203841630733) internal successors, (8878), 2551 states have internal predecessors, (8878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 8878 transitions. [2021-06-05 06:43:46,149 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 8878 transitions. Word has length 28 [2021-06-05 06:43:46,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:46,149 INFO L482 AbstractCegarLoop]: Abstraction has 2552 states and 8878 transitions. [2021-06-05 06:43:46,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:46,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 8878 transitions. [2021-06-05 06:43:46,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:46,152 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:46,152 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:46,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4018,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:46,352 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:46,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:46,353 INFO L82 PathProgramCache]: Analyzing trace with hash -2115011713, now seen corresponding path program 60 times [2021-06-05 06:43:46,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:46,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273218635] [2021-06-05 06:43:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:46,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:46,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273218635] [2021-06-05 06:43:46,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273218635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:46,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991049352] [2021-06-05 06:43:46,426 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:46,449 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:43:46,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:46,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:46,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:46,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991049352] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:46,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:46,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:43:46,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203271863] [2021-06-05 06:43:46,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:43:46,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:46,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:43:46,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:43:46,551 INFO L87 Difference]: Start difference. First operand 2552 states and 8878 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:47,620 INFO L93 Difference]: Finished difference Result 5564 states and 17386 transitions. [2021-06-05 06:43:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:43:47,620 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:47,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:47,627 INFO L225 Difference]: With dead ends: 5564 [2021-06-05 06:43:47,627 INFO L226 Difference]: Without dead ends: 5564 [2021-06-05 06:43:47,628 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 639.0ms TimeCoverageRelationStatistics Valid=904, Invalid=3652, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:43:47,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2021-06-05 06:43:47,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 2570. [2021-06-05 06:43:47,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 2569 states have (on average 3.474114441416894) internal successors, (8925), 2569 states have internal predecessors, (8925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:47,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 8925 transitions. [2021-06-05 06:43:47,673 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 8925 transitions. Word has length 28 [2021-06-05 06:43:47,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:47,673 INFO L482 AbstractCegarLoop]: Abstraction has 2570 states and 8925 transitions. [2021-06-05 06:43:47,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:47,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 8925 transitions. [2021-06-05 06:43:47,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:47,676 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:47,676 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:47,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4019,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:47,876 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:47,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:47,876 INFO L82 PathProgramCache]: Analyzing trace with hash 970325317, now seen corresponding path program 64 times [2021-06-05 06:43:47,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:47,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651927267] [2021-06-05 06:43:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:47,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:47,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651927267] [2021-06-05 06:43:47,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651927267] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:47,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845482817] [2021-06-05 06:43:47,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:47,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:47,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:47,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:47,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:48,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845482817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:48,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:48,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 06:43:48,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002340492] [2021-06-05 06:43:48,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:43:48,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:48,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:43:48,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:43:48,016 INFO L87 Difference]: Start difference. First operand 2570 states and 8925 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:48,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:48,586 INFO L93 Difference]: Finished difference Result 4970 states and 15740 transitions. [2021-06-05 06:43:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:43:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:48,593 INFO L225 Difference]: With dead ends: 4970 [2021-06-05 06:43:48,593 INFO L226 Difference]: Without dead ends: 4970 [2021-06-05 06:43:48,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 311.1ms TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:43:48,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2021-06-05 06:43:48,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 2640. [2021-06-05 06:43:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2639 states have (on average 3.4588859416445623) internal successors, (9128), 2639 states have internal predecessors, (9128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:48,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 9128 transitions. [2021-06-05 06:43:48,638 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 9128 transitions. Word has length 28 [2021-06-05 06:43:48,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:48,638 INFO L482 AbstractCegarLoop]: Abstraction has 2640 states and 9128 transitions. [2021-06-05 06:43:48,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 9128 transitions. [2021-06-05 06:43:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:48,641 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:48,641 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:48,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4020 [2021-06-05 06:43:48,856 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:48,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:48,856 INFO L82 PathProgramCache]: Analyzing trace with hash 828956685, now seen corresponding path program 61 times [2021-06-05 06:43:48,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:48,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790276869] [2021-06-05 06:43:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:43:48,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:48,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790276869] [2021-06-05 06:43:48,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790276869] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:48,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248126935] [2021-06-05 06:43:48,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:48,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:43:48,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:43:48,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248126935] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:48,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:48,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:43:48,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184955378] [2021-06-05 06:43:48,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:43:48,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:48,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:43:48,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:43:48,960 INFO L87 Difference]: Start difference. First operand 2640 states and 9128 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:49,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:49,141 INFO L93 Difference]: Finished difference Result 4201 states and 13809 transitions. [2021-06-05 06:43:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:43:49,142 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:49,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:49,148 INFO L225 Difference]: With dead ends: 4201 [2021-06-05 06:43:49,149 INFO L226 Difference]: Without dead ends: 4150 [2021-06-05 06:43:49,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:43:49,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2021-06-05 06:43:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 2983. [2021-06-05 06:43:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2983 states, 2982 states have (on average 3.5087189805499666) internal successors, (10463), 2982 states have internal predecessors, (10463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 10463 transitions. [2021-06-05 06:43:49,197 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 10463 transitions. Word has length 28 [2021-06-05 06:43:49,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:49,198 INFO L482 AbstractCegarLoop]: Abstraction has 2983 states and 10463 transitions. [2021-06-05 06:43:49,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:49,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 10463 transitions. [2021-06-05 06:43:49,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:49,202 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:49,202 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:49,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4021 [2021-06-05 06:43:49,417 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:49,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:49,417 INFO L82 PathProgramCache]: Analyzing trace with hash 391987977, now seen corresponding path program 62 times [2021-06-05 06:43:49,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:49,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141961102] [2021-06-05 06:43:49,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:49,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:49,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141961102] [2021-06-05 06:43:49,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141961102] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:49,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742480061] [2021-06-05 06:43:49,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:49,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:49,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:49,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:43:49,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:49,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742480061] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:49,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:49,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:43:49,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237986009] [2021-06-05 06:43:49,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:43:49,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:49,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:43:49,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:43:49,552 INFO L87 Difference]: Start difference. First operand 2983 states and 10463 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:50,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:50,087 INFO L93 Difference]: Finished difference Result 4805 states and 15497 transitions. [2021-06-05 06:43:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:43:50,087 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:50,093 INFO L225 Difference]: With dead ends: 4805 [2021-06-05 06:43:50,093 INFO L226 Difference]: Without dead ends: 4758 [2021-06-05 06:43:50,093 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 327.1ms TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:43:50,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2021-06-05 06:43:50,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 3157. [2021-06-05 06:43:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 3156 states have (on average 3.5218631178707223) internal successors, (11115), 3156 states have internal predecessors, (11115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:50,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 11115 transitions. [2021-06-05 06:43:50,139 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 11115 transitions. Word has length 28 [2021-06-05 06:43:50,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:50,140 INFO L482 AbstractCegarLoop]: Abstraction has 3157 states and 11115 transitions. [2021-06-05 06:43:50,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:50,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 11115 transitions. [2021-06-05 06:43:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:50,143 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:50,143 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:50,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4022 [2021-06-05 06:43:50,344 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:50,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:50,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1928077453, now seen corresponding path program 63 times [2021-06-05 06:43:50,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:50,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373063953] [2021-06-05 06:43:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:50,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:50,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373063953] [2021-06-05 06:43:50,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373063953] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:50,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362876938] [2021-06-05 06:43:50,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:50,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:43:50,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:50,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:43:50,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:50,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362876938] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:50,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:50,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:43:50,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856369192] [2021-06-05 06:43:50,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:43:50,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:50,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:43:50,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:43:50,483 INFO L87 Difference]: Start difference. First operand 3157 states and 11115 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:51,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:51,134 INFO L93 Difference]: Finished difference Result 5122 states and 16201 transitions. [2021-06-05 06:43:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:43:51,134 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:51,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:51,140 INFO L225 Difference]: With dead ends: 5122 [2021-06-05 06:43:51,140 INFO L226 Difference]: Without dead ends: 5096 [2021-06-05 06:43:51,141 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 402.3ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:43:51,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5096 states. [2021-06-05 06:43:51,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5096 to 3181. [2021-06-05 06:43:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3181 states, 3180 states have (on average 3.5276729559748428) internal successors, (11218), 3180 states have internal predecessors, (11218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 11218 transitions. [2021-06-05 06:43:51,192 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 11218 transitions. Word has length 28 [2021-06-05 06:43:51,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:51,192 INFO L482 AbstractCegarLoop]: Abstraction has 3181 states and 11218 transitions. [2021-06-05 06:43:51,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 11218 transitions. [2021-06-05 06:43:51,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:51,211 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:51,211 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:51,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4023 [2021-06-05 06:43:51,412 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:51,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:51,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1694477061, now seen corresponding path program 64 times [2021-06-05 06:43:51,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:51,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74855248] [2021-06-05 06:43:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:51,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:51,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74855248] [2021-06-05 06:43:51,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74855248] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:51,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914433804] [2021-06-05 06:43:51,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:51,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:51,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:51,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:43:51,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:51,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914433804] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:51,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:51,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:43:51,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702393145] [2021-06-05 06:43:51,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:43:51,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:51,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:43:51,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:43:51,553 INFO L87 Difference]: Start difference. First operand 3181 states and 11218 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:52,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:52,210 INFO L93 Difference]: Finished difference Result 5123 states and 16231 transitions. [2021-06-05 06:43:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:43:52,210 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:52,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:52,217 INFO L225 Difference]: With dead ends: 5123 [2021-06-05 06:43:52,217 INFO L226 Difference]: Without dead ends: 5117 [2021-06-05 06:43:52,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 407.9ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:43:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5117 states. [2021-06-05 06:43:52,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5117 to 3184. [2021-06-05 06:43:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 3183 states have (on average 3.522148916116871) internal successors, (11211), 3183 states have internal predecessors, (11211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:52,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 11211 transitions. [2021-06-05 06:43:52,269 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 11211 transitions. Word has length 28 [2021-06-05 06:43:52,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:52,269 INFO L482 AbstractCegarLoop]: Abstraction has 3184 states and 11211 transitions. [2021-06-05 06:43:52,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 11211 transitions. [2021-06-05 06:43:52,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:52,273 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:52,273 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:52,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4024 [2021-06-05 06:43:52,489 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:52,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:52,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1551691313, now seen corresponding path program 65 times [2021-06-05 06:43:52,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:52,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610841972] [2021-06-05 06:43:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:52,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:52,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:52,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610841972] [2021-06-05 06:43:52,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610841972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:52,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551933713] [2021-06-05 06:43:52,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:52,545 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:43:52,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:52,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:43:52,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:52,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551933713] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:52,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:52,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:43:52,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792308817] [2021-06-05 06:43:52,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:43:52,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:52,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:43:52,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:43:52,608 INFO L87 Difference]: Start difference. First operand 3184 states and 11211 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:53,129 INFO L93 Difference]: Finished difference Result 5875 states and 18946 transitions. [2021-06-05 06:43:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:43:53,130 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:53,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:53,137 INFO L225 Difference]: With dead ends: 5875 [2021-06-05 06:43:53,137 INFO L226 Difference]: Without dead ends: 5792 [2021-06-05 06:43:53,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 288.0ms TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:43:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2021-06-05 06:43:53,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 3343. [2021-06-05 06:43:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3342 states have (on average 3.5556552962298027) internal successors, (11883), 3342 states have internal predecessors, (11883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:53,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 11883 transitions. [2021-06-05 06:43:53,199 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 11883 transitions. Word has length 28 [2021-06-05 06:43:53,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:53,199 INFO L482 AbstractCegarLoop]: Abstraction has 3343 states and 11883 transitions. [2021-06-05 06:43:53,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 11883 transitions. [2021-06-05 06:43:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:53,203 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:53,203 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:53,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4025,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:53,404 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:53,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:53,404 INFO L82 PathProgramCache]: Analyzing trace with hash -659497231, now seen corresponding path program 66 times [2021-06-05 06:43:53,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:53,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656581348] [2021-06-05 06:43:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:43:53,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:53,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656581348] [2021-06-05 06:43:53,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656581348] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:53,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814361467] [2021-06-05 06:43:53,433 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:53,460 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:43:53,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:53,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:43:53,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:43:53,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814361467] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:53,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:53,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-05 06:43:53,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976188624] [2021-06-05 06:43:53,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:43:53,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:53,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:43:53,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:43:53,517 INFO L87 Difference]: Start difference. First operand 3343 states and 11883 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:53,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:53,666 INFO L93 Difference]: Finished difference Result 4624 states and 15329 transitions. [2021-06-05 06:43:53,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:43:53,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:53,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:53,672 INFO L225 Difference]: With dead ends: 4624 [2021-06-05 06:43:53,672 INFO L226 Difference]: Without dead ends: 4624 [2021-06-05 06:43:53,672 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:43:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2021-06-05 06:43:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 3098. [2021-06-05 06:43:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3097 states have (on average 3.5298676138198255) internal successors, (10932), 3097 states have internal predecessors, (10932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 10932 transitions. [2021-06-05 06:43:53,717 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 10932 transitions. Word has length 28 [2021-06-05 06:43:53,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:53,718 INFO L482 AbstractCegarLoop]: Abstraction has 3098 states and 10932 transitions. [2021-06-05 06:43:53,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:53,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 10932 transitions. [2021-06-05 06:43:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:53,721 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:53,721 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:53,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4026,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:53,922 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:53,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:53,922 INFO L82 PathProgramCache]: Analyzing trace with hash -2006178797, now seen corresponding path program 67 times [2021-06-05 06:43:53,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:53,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014822478] [2021-06-05 06:43:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:53,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:53,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014822478] [2021-06-05 06:43:53,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014822478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:53,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425796705] [2021-06-05 06:43:53,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:53,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:53,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:54,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425796705] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:54,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:54,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:43:54,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523001026] [2021-06-05 06:43:54,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:43:54,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:54,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:43:54,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:43:54,058 INFO L87 Difference]: Start difference. First operand 3098 states and 10932 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:54,687 INFO L93 Difference]: Finished difference Result 6516 states and 20731 transitions. [2021-06-05 06:43:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:43:54,688 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:54,696 INFO L225 Difference]: With dead ends: 6516 [2021-06-05 06:43:54,696 INFO L226 Difference]: Without dead ends: 6516 [2021-06-05 06:43:54,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 358.2ms TimeCoverageRelationStatistics Valid=552, Invalid=1800, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:43:54,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6516 states. [2021-06-05 06:43:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6516 to 3116. [2021-06-05 06:43:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 3115 states have (on average 3.5296950240770464) internal successors, (10995), 3115 states have internal predecessors, (10995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 10995 transitions. [2021-06-05 06:43:54,757 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 10995 transitions. Word has length 28 [2021-06-05 06:43:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:54,757 INFO L482 AbstractCegarLoop]: Abstraction has 3116 states and 10995 transitions. [2021-06-05 06:43:54,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 10995 transitions. [2021-06-05 06:43:54,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:54,761 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:54,761 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:54,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4027,132 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:54,962 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:54,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1221264703, now seen corresponding path program 68 times [2021-06-05 06:43:54,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:54,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132098978] [2021-06-05 06:43:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:54,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:54,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132098978] [2021-06-05 06:43:54,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132098978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:54,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488295344] [2021-06-05 06:43:54,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:55,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:55,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:55,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:55,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:55,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488295344] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:55,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:55,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:43:55,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160562320] [2021-06-05 06:43:55,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:43:55,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:55,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:43:55,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:43:55,085 INFO L87 Difference]: Start difference. First operand 3116 states and 10995 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:55,749 INFO L93 Difference]: Finished difference Result 6771 states and 21511 transitions. [2021-06-05 06:43:55,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 06:43:55,749 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:55,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:55,759 INFO L225 Difference]: With dead ends: 6771 [2021-06-05 06:43:55,759 INFO L226 Difference]: Without dead ends: 6771 [2021-06-05 06:43:55,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 390.6ms TimeCoverageRelationStatistics Valid=634, Invalid=2336, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 06:43:55,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2021-06-05 06:43:55,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 3210. [2021-06-05 06:43:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 3209 states have (on average 3.5219694608912433) internal successors, (11302), 3209 states have internal predecessors, (11302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 11302 transitions. [2021-06-05 06:43:55,845 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 11302 transitions. Word has length 28 [2021-06-05 06:43:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:55,846 INFO L482 AbstractCegarLoop]: Abstraction has 3210 states and 11302 transitions. [2021-06-05 06:43:55,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 11302 transitions. [2021-06-05 06:43:55,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:55,849 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:55,849 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:56,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4028 [2021-06-05 06:43:56,050 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:56,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1990679937, now seen corresponding path program 69 times [2021-06-05 06:43:56,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:56,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216295276] [2021-06-05 06:43:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:56,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:56,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216295276] [2021-06-05 06:43:56,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216295276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:56,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680768631] [2021-06-05 06:43:56,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:56,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:43:56,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:56,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:43:56,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:56,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680768631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:56,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:56,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:43:56,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887811579] [2021-06-05 06:43:56,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:43:56,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:56,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:43:56,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:43:56,169 INFO L87 Difference]: Start difference. First operand 3210 states and 11302 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:56,753 INFO L93 Difference]: Finished difference Result 6952 states and 22145 transitions. [2021-06-05 06:43:56,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:43:56,753 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:56,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:56,763 INFO L225 Difference]: With dead ends: 6952 [2021-06-05 06:43:56,763 INFO L226 Difference]: Without dead ends: 6916 [2021-06-05 06:43:56,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 332.3ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:43:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2021-06-05 06:43:56,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 3597. [2021-06-05 06:43:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 3.5489432703003336) internal successors, (12762), 3596 states have internal predecessors, (12762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 12762 transitions. [2021-06-05 06:43:56,833 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 12762 transitions. Word has length 28 [2021-06-05 06:43:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:56,833 INFO L482 AbstractCegarLoop]: Abstraction has 3597 states and 12762 transitions. [2021-06-05 06:43:56,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:56,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 12762 transitions. [2021-06-05 06:43:56,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:56,837 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:56,837 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:57,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4029,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:57,038 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:57,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:57,038 INFO L82 PathProgramCache]: Analyzing trace with hash -833209241, now seen corresponding path program 70 times [2021-06-05 06:43:57,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:57,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641145737] [2021-06-05 06:43:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:57,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:57,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641145737] [2021-06-05 06:43:57,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641145737] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:57,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456897996] [2021-06-05 06:43:57,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:57,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:57,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:57,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:43:57,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:57,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456897996] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:57,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:57,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:43:57,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42981776] [2021-06-05 06:43:57,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:43:57,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:57,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:43:57,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:43:57,157 INFO L87 Difference]: Start difference. First operand 3597 states and 12762 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:57,723 INFO L93 Difference]: Finished difference Result 7145 states and 22690 transitions. [2021-06-05 06:43:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:43:57,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:57,734 INFO L225 Difference]: With dead ends: 7145 [2021-06-05 06:43:57,734 INFO L226 Difference]: Without dead ends: 7145 [2021-06-05 06:43:57,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 350.7ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:43:57,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7145 states. [2021-06-05 06:43:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7145 to 3308. [2021-06-05 06:43:57,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3308 states, 3307 states have (on average 3.5119443604475356) internal successors, (11614), 3307 states have internal predecessors, (11614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 11614 transitions. [2021-06-05 06:43:57,803 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 11614 transitions. Word has length 28 [2021-06-05 06:43:57,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:57,803 INFO L482 AbstractCegarLoop]: Abstraction has 3308 states and 11614 transitions. [2021-06-05 06:43:57,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:57,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 11614 transitions. [2021-06-05 06:43:57,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:57,807 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:57,808 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:58,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4030,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:58,008 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:58,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1266085845, now seen corresponding path program 71 times [2021-06-05 06:43:58,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:58,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173679345] [2021-06-05 06:43:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:58,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:58,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173679345] [2021-06-05 06:43:58,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173679345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:58,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136062285] [2021-06-05 06:43:58,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:58,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:43:58,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:58,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:58,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:58,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136062285] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:58,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:58,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:43:58,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921174567] [2021-06-05 06:43:58,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:43:58,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:58,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:43:58,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:43:58,126 INFO L87 Difference]: Start difference. First operand 3308 states and 11614 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:58,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:58,748 INFO L93 Difference]: Finished difference Result 6241 states and 20184 transitions. [2021-06-05 06:43:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 06:43:58,749 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:43:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:58,758 INFO L225 Difference]: With dead ends: 6241 [2021-06-05 06:43:58,758 INFO L226 Difference]: Without dead ends: 6237 [2021-06-05 06:43:58,758 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 361.8ms TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:43:58,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2021-06-05 06:43:58,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 3068. [2021-06-05 06:43:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3067 states have (on average 3.53635474404956) internal successors, (10846), 3067 states have internal predecessors, (10846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 10846 transitions. [2021-06-05 06:43:58,832 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 10846 transitions. Word has length 28 [2021-06-05 06:43:58,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:58,832 INFO L482 AbstractCegarLoop]: Abstraction has 3068 states and 10846 transitions. [2021-06-05 06:43:58,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 10846 transitions. [2021-06-05 06:43:58,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:58,836 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:58,836 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:59,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4031 [2021-06-05 06:43:59,036 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:59,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1538095035, now seen corresponding path program 72 times [2021-06-05 06:43:59,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:59,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857253075] [2021-06-05 06:43:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:59,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:59,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857253075] [2021-06-05 06:43:59,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857253075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:59,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728304405] [2021-06-05 06:43:59,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:59,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:43:59,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:59,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:59,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:59,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728304405] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:59,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:59,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:43:59,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183202433] [2021-06-05 06:43:59,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:43:59,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:59,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:43:59,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:43:59,184 INFO L87 Difference]: Start difference. First operand 3068 states and 10846 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:00,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:00,134 INFO L93 Difference]: Finished difference Result 9481 states and 30975 transitions. [2021-06-05 06:44:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:44:00,134 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:00,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:00,148 INFO L225 Difference]: With dead ends: 9481 [2021-06-05 06:44:00,148 INFO L226 Difference]: Without dead ends: 9481 [2021-06-05 06:44:00,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 552.7ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:44:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9481 states. [2021-06-05 06:44:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9481 to 3244. [2021-06-05 06:44:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3244 states, 3243 states have (on average 3.602836879432624) internal successors, (11684), 3243 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 11684 transitions. [2021-06-05 06:44:00,256 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 11684 transitions. Word has length 28 [2021-06-05 06:44:00,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:00,256 INFO L482 AbstractCegarLoop]: Abstraction has 3244 states and 11684 transitions. [2021-06-05 06:44:00,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:00,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 11684 transitions. [2021-06-05 06:44:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:00,260 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:00,260 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:00,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4032 [2021-06-05 06:44:00,461 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:00,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:00,461 INFO L82 PathProgramCache]: Analyzing trace with hash -971142955, now seen corresponding path program 73 times [2021-06-05 06:44:00,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:00,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456132958] [2021-06-05 06:44:00,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:00,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:00,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456132958] [2021-06-05 06:44:00,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456132958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:00,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555446926] [2021-06-05 06:44:00,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:00,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:00,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:00,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555446926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:00,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:00,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:44:00,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028306346] [2021-06-05 06:44:00,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:00,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:00,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:00,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:00,602 INFO L87 Difference]: Start difference. First operand 3244 states and 11684 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:01,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:01,530 INFO L93 Difference]: Finished difference Result 9310 states and 30510 transitions. [2021-06-05 06:44:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:44:01,530 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:01,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:01,545 INFO L225 Difference]: With dead ends: 9310 [2021-06-05 06:44:01,545 INFO L226 Difference]: Without dead ends: 9310 [2021-06-05 06:44:01,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 548.0ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:44:01,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9310 states. [2021-06-05 06:44:01,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9310 to 3216. [2021-06-05 06:44:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 3215 states have (on average 3.5878693623639193) internal successors, (11535), 3215 states have internal predecessors, (11535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 11535 transitions. [2021-06-05 06:44:01,630 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 11535 transitions. Word has length 28 [2021-06-05 06:44:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:01,630 INFO L482 AbstractCegarLoop]: Abstraction has 3216 states and 11535 transitions. [2021-06-05 06:44:01,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 11535 transitions. [2021-06-05 06:44:01,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:01,634 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:01,634 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:01,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4033 [2021-06-05 06:44:01,834 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:01,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:01,851 INFO L82 PathProgramCache]: Analyzing trace with hash -2143488813, now seen corresponding path program 74 times [2021-06-05 06:44:01,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:01,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665386631] [2021-06-05 06:44:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:01,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:01,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665386631] [2021-06-05 06:44:01,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665386631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:01,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859815762] [2021-06-05 06:44:01,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:01,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:01,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:01,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:01,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:01,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859815762] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:01,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:01,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:44:01,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953692361] [2021-06-05 06:44:01,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:01,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:01,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:01,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:01,985 INFO L87 Difference]: Start difference. First operand 3216 states and 11535 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:02,849 INFO L93 Difference]: Finished difference Result 8753 states and 27774 transitions. [2021-06-05 06:44:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 06:44:02,849 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:02,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:02,862 INFO L225 Difference]: With dead ends: 8753 [2021-06-05 06:44:02,862 INFO L226 Difference]: Without dead ends: 8753 [2021-06-05 06:44:02,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 460.3ms TimeCoverageRelationStatistics Valid=821, Invalid=3085, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:44:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2021-06-05 06:44:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 3236. [2021-06-05 06:44:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 3235 states have (on average 3.591035548686244) internal successors, (11617), 3235 states have internal predecessors, (11617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 11617 transitions. [2021-06-05 06:44:02,938 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 11617 transitions. Word has length 28 [2021-06-05 06:44:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:02,938 INFO L482 AbstractCegarLoop]: Abstraction has 3236 states and 11617 transitions. [2021-06-05 06:44:02,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 11617 transitions. [2021-06-05 06:44:02,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:02,942 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:02,942 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:03,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4034 [2021-06-05 06:44:03,143 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:03,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:03,143 INFO L82 PathProgramCache]: Analyzing trace with hash -2062112725, now seen corresponding path program 75 times [2021-06-05 06:44:03,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:03,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243240721] [2021-06-05 06:44:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:03,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:03,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243240721] [2021-06-05 06:44:03,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243240721] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:03,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562147323] [2021-06-05 06:44:03,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:03,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:44:03,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:03,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:03,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:03,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:03,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562147323] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:03,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:03,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:44:03,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658627462] [2021-06-05 06:44:03,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:03,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:03,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:03,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:03,268 INFO L87 Difference]: Start difference. First operand 3236 states and 11617 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:04,186 INFO L93 Difference]: Finished difference Result 8265 states and 26591 transitions. [2021-06-05 06:44:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 06:44:04,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:04,199 INFO L225 Difference]: With dead ends: 8265 [2021-06-05 06:44:04,199 INFO L226 Difference]: Without dead ends: 8257 [2021-06-05 06:44:04,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 475.3ms TimeCoverageRelationStatistics Valid=776, Invalid=2764, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:44:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8257 states. [2021-06-05 06:44:04,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8257 to 3218. [2021-06-05 06:44:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3217 states have (on average 3.5871930369909855) internal successors, (11540), 3217 states have internal predecessors, (11540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 11540 transitions. [2021-06-05 06:44:04,278 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 11540 transitions. Word has length 28 [2021-06-05 06:44:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:04,278 INFO L482 AbstractCegarLoop]: Abstraction has 3218 states and 11540 transitions. [2021-06-05 06:44:04,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:04,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 11540 transitions. [2021-06-05 06:44:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:04,282 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:04,282 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:04,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4035 [2021-06-05 06:44:04,482 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:04,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:04,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1131455509, now seen corresponding path program 76 times [2021-06-05 06:44:04,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:04,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924218491] [2021-06-05 06:44:04,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:04,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:04,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924218491] [2021-06-05 06:44:04,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924218491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:04,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798942723] [2021-06-05 06:44:04,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:04,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:04,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:04,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:04,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:04,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798942723] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:04,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:04,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:44:04,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731570055] [2021-06-05 06:44:04,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:04,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:04,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:04,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:04,644 INFO L87 Difference]: Start difference. First operand 3218 states and 11540 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:05,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:05,533 INFO L93 Difference]: Finished difference Result 8190 states and 26354 transitions. [2021-06-05 06:44:05,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 06:44:05,533 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:05,545 INFO L225 Difference]: With dead ends: 8190 [2021-06-05 06:44:05,545 INFO L226 Difference]: Without dead ends: 8190 [2021-06-05 06:44:05,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 497.5ms TimeCoverageRelationStatistics Valid=820, Invalid=2962, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:44:05,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8190 states. [2021-06-05 06:44:05,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8190 to 3234. [2021-06-05 06:44:05,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3233 states have (on average 3.589236003711723) internal successors, (11604), 3233 states have internal predecessors, (11604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 11604 transitions. [2021-06-05 06:44:05,619 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 11604 transitions. Word has length 28 [2021-06-05 06:44:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:05,619 INFO L482 AbstractCegarLoop]: Abstraction has 3234 states and 11604 transitions. [2021-06-05 06:44:05,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:05,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 11604 transitions. [2021-06-05 06:44:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:05,623 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:05,623 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:05,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4036,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:05,824 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:05,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:05,824 INFO L82 PathProgramCache]: Analyzing trace with hash 511583645, now seen corresponding path program 77 times [2021-06-05 06:44:05,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:05,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111672226] [2021-06-05 06:44:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:05,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:05,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111672226] [2021-06-05 06:44:05,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111672226] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:05,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518182045] [2021-06-05 06:44:05,860 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:05,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 06:44:05,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:05,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:05,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:05,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518182045] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:05,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:05,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:44:05,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301016298] [2021-06-05 06:44:05,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:05,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:05,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:05,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:05,965 INFO L87 Difference]: Start difference. First operand 3234 states and 11604 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:06,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:06,806 INFO L93 Difference]: Finished difference Result 7851 states and 25552 transitions. [2021-06-05 06:44:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:44:06,806 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:06,818 INFO L225 Difference]: With dead ends: 7851 [2021-06-05 06:44:06,818 INFO L226 Difference]: Without dead ends: 7843 [2021-06-05 06:44:06,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 475.7ms TimeCoverageRelationStatistics Valid=800, Invalid=2740, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:44:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7843 states. [2021-06-05 06:44:06,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7843 to 2991. [2021-06-05 06:44:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2990 states have (on average 3.5123745819397993) internal successors, (10502), 2990 states have internal predecessors, (10502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:06,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 10502 transitions. [2021-06-05 06:44:06,913 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 10502 transitions. Word has length 28 [2021-06-05 06:44:06,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:06,913 INFO L482 AbstractCegarLoop]: Abstraction has 2991 states and 10502 transitions. [2021-06-05 06:44:06,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:06,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 10502 transitions. [2021-06-05 06:44:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:06,917 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:06,917 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:07,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4037,142 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:07,117 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:07,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:07,118 INFO L82 PathProgramCache]: Analyzing trace with hash 594987225, now seen corresponding path program 78 times [2021-06-05 06:44:07,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:07,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854325339] [2021-06-05 06:44:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:07,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:07,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854325339] [2021-06-05 06:44:07,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854325339] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:07,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130641562] [2021-06-05 06:44:07,186 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:07,215 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:44:07,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:07,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:07,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:07,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130641562] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:07,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:07,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:44:07,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212584402] [2021-06-05 06:44:07,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:07,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:07,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:07,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:07,300 INFO L87 Difference]: Start difference. First operand 2991 states and 10502 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:08,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:08,134 INFO L93 Difference]: Finished difference Result 6061 states and 19474 transitions. [2021-06-05 06:44:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:44:08,134 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:08,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:08,143 INFO L225 Difference]: With dead ends: 6061 [2021-06-05 06:44:08,143 INFO L226 Difference]: Without dead ends: 6061 [2021-06-05 06:44:08,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 532.4ms TimeCoverageRelationStatistics Valid=709, Invalid=2713, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:44:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2021-06-05 06:44:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 3003. [2021-06-05 06:44:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3002 states have (on average 3.5109926715522985) internal successors, (10540), 3002 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 10540 transitions. [2021-06-05 06:44:08,197 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 10540 transitions. Word has length 28 [2021-06-05 06:44:08,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:08,197 INFO L482 AbstractCegarLoop]: Abstraction has 3003 states and 10540 transitions. [2021-06-05 06:44:08,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:08,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 10540 transitions. [2021-06-05 06:44:08,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:08,200 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:08,200 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:08,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4038,143 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:08,401 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:08,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:08,401 INFO L82 PathProgramCache]: Analyzing trace with hash -2046619895, now seen corresponding path program 79 times [2021-06-05 06:44:08,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:08,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477875566] [2021-06-05 06:44:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:08,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:08,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477875566] [2021-06-05 06:44:08,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477875566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:08,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508910804] [2021-06-05 06:44:08,437 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:08,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:08,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:08,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508910804] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:08,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:08,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:08,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885294196] [2021-06-05 06:44:08,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:08,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:08,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:08,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:08,557 INFO L87 Difference]: Start difference. First operand 3003 states and 10540 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:09,566 INFO L93 Difference]: Finished difference Result 6857 states and 21507 transitions. [2021-06-05 06:44:09,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:44:09,567 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:09,576 INFO L225 Difference]: With dead ends: 6857 [2021-06-05 06:44:09,576 INFO L226 Difference]: Without dead ends: 6857 [2021-06-05 06:44:09,577 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 649.4ms TimeCoverageRelationStatistics Valid=1012, Invalid=4244, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:44:09,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6857 states. [2021-06-05 06:44:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6857 to 3069. [2021-06-05 06:44:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 3068 states have (on average 3.50619295958279) internal successors, (10757), 3068 states have internal predecessors, (10757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:09,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 10757 transitions. [2021-06-05 06:44:09,637 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 10757 transitions. Word has length 28 [2021-06-05 06:44:09,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:09,637 INFO L482 AbstractCegarLoop]: Abstraction has 3069 states and 10757 transitions. [2021-06-05 06:44:09,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:09,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 10757 transitions. [2021-06-05 06:44:09,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:09,641 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:09,641 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:09,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4039,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:09,845 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:09,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:09,845 INFO L82 PathProgramCache]: Analyzing trace with hash -403580741, now seen corresponding path program 80 times [2021-06-05 06:44:09,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:09,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628642662] [2021-06-05 06:44:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:09,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:09,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628642662] [2021-06-05 06:44:09,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628642662] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:09,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163031783] [2021-06-05 06:44:09,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:09,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:09,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:09,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:09,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:09,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163031783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:09,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:09,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:09,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846376204] [2021-06-05 06:44:09,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:09,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:09,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:09,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:09,992 INFO L87 Difference]: Start difference. First operand 3069 states and 10757 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:10,941 INFO L93 Difference]: Finished difference Result 6397 states and 20307 transitions. [2021-06-05 06:44:10,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:44:10,941 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:10,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:10,949 INFO L225 Difference]: With dead ends: 6397 [2021-06-05 06:44:10,949 INFO L226 Difference]: Without dead ends: 6393 [2021-06-05 06:44:10,950 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 568.4ms TimeCoverageRelationStatistics Valid=914, Invalid=3508, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:44:10,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2021-06-05 06:44:10,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 2995. [2021-06-05 06:44:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2994 states have (on average 3.502672010688043) internal successors, (10487), 2994 states have internal predecessors, (10487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 10487 transitions. [2021-06-05 06:44:11,003 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 10487 transitions. Word has length 28 [2021-06-05 06:44:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:11,003 INFO L482 AbstractCegarLoop]: Abstraction has 2995 states and 10487 transitions. [2021-06-05 06:44:11,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 10487 transitions. [2021-06-05 06:44:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:11,007 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:11,007 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:11,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4040 [2021-06-05 06:44:11,207 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:11,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:11,207 INFO L82 PathProgramCache]: Analyzing trace with hash 175862483, now seen corresponding path program 65 times [2021-06-05 06:44:11,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:11,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43792287] [2021-06-05 06:44:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:11,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:11,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43792287] [2021-06-05 06:44:11,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43792287] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:11,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172758568] [2021-06-05 06:44:11,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:11,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:44:11,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:11,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:11,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:11,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172758568] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:11,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:11,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:44:11,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023991268] [2021-06-05 06:44:11,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:11,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:11,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:11,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:11,339 INFO L87 Difference]: Start difference. First operand 2995 states and 10487 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:11,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:11,849 INFO L93 Difference]: Finished difference Result 5524 states and 17848 transitions. [2021-06-05 06:44:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:44:11,849 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:11,857 INFO L225 Difference]: With dead ends: 5524 [2021-06-05 06:44:11,857 INFO L226 Difference]: Without dead ends: 5524 [2021-06-05 06:44:11,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 299.7ms TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:44:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2021-06-05 06:44:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 2995. [2021-06-05 06:44:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2994 states have (on average 3.5046760187040746) internal successors, (10493), 2994 states have internal predecessors, (10493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 10493 transitions. [2021-06-05 06:44:11,903 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 10493 transitions. Word has length 28 [2021-06-05 06:44:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:11,903 INFO L482 AbstractCegarLoop]: Abstraction has 2995 states and 10493 transitions. [2021-06-05 06:44:11,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 10493 transitions. [2021-06-05 06:44:11,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:11,906 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:11,906 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:12,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4041 [2021-06-05 06:44:12,106 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:12,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:12,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1435937279, now seen corresponding path program 66 times [2021-06-05 06:44:12,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:12,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264755226] [2021-06-05 06:44:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:12,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:12,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264755226] [2021-06-05 06:44:12,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264755226] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:12,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037502584] [2021-06-05 06:44:12,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:12,167 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:44:12,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:12,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:12,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:12,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037502584] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:12,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:12,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:44:12,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304128204] [2021-06-05 06:44:12,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:12,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:12,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:12,238 INFO L87 Difference]: Start difference. First operand 2995 states and 10493 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:13,020 INFO L93 Difference]: Finished difference Result 5876 states and 18839 transitions. [2021-06-05 06:44:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:44:13,020 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:13,028 INFO L225 Difference]: With dead ends: 5876 [2021-06-05 06:44:13,028 INFO L226 Difference]: Without dead ends: 5876 [2021-06-05 06:44:13,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 472.1ms TimeCoverageRelationStatistics Valid=638, Invalid=2118, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:44:13,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5876 states. [2021-06-05 06:44:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5876 to 2986. [2021-06-05 06:44:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2986 states, 2985 states have (on average 3.504857621440536) internal successors, (10462), 2985 states have internal predecessors, (10462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 10462 transitions. [2021-06-05 06:44:13,080 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 10462 transitions. Word has length 28 [2021-06-05 06:44:13,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:13,080 INFO L482 AbstractCegarLoop]: Abstraction has 2986 states and 10462 transitions. [2021-06-05 06:44:13,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:13,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 10462 transitions. [2021-06-05 06:44:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:13,084 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:13,084 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:13,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4042 [2021-06-05 06:44:13,284 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:13,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1667476927, now seen corresponding path program 67 times [2021-06-05 06:44:13,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:13,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455407026] [2021-06-05 06:44:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:13,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:13,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455407026] [2021-06-05 06:44:13,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455407026] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:13,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552101556] [2021-06-05 06:44:13,322 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:13,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:13,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:13,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552101556] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:13,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:13,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:44:13,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636242780] [2021-06-05 06:44:13,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:13,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:13,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:13,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:13,422 INFO L87 Difference]: Start difference. First operand 2986 states and 10462 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:14,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:14,185 INFO L93 Difference]: Finished difference Result 6350 states and 20120 transitions. [2021-06-05 06:44:14,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 06:44:14,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:14,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:14,195 INFO L225 Difference]: With dead ends: 6350 [2021-06-05 06:44:14,195 INFO L226 Difference]: Without dead ends: 6350 [2021-06-05 06:44:14,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 463.6ms TimeCoverageRelationStatistics Valid=777, Invalid=3005, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:44:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2021-06-05 06:44:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 3046. [2021-06-05 06:44:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3045 states have (on average 3.5008210180623975) internal successors, (10660), 3045 states have internal predecessors, (10660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 10660 transitions. [2021-06-05 06:44:14,252 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 10660 transitions. Word has length 28 [2021-06-05 06:44:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:14,252 INFO L482 AbstractCegarLoop]: Abstraction has 3046 states and 10660 transitions. [2021-06-05 06:44:14,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 10660 transitions. [2021-06-05 06:44:14,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:14,255 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:14,255 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:14,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4043,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:14,456 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:14,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:14,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1647761113, now seen corresponding path program 68 times [2021-06-05 06:44:14,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:14,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123301930] [2021-06-05 06:44:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:14,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:14,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123301930] [2021-06-05 06:44:14,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123301930] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:14,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131459964] [2021-06-05 06:44:14,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:14,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:14,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:14,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:14,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:14,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131459964] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:14,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:14,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-05 06:44:14,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138541105] [2021-06-05 06:44:14,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:14,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:14,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:14,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:14,600 INFO L87 Difference]: Start difference. First operand 3046 states and 10660 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:15,166 INFO L93 Difference]: Finished difference Result 7170 states and 24220 transitions. [2021-06-05 06:44:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:44:15,166 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:15,177 INFO L225 Difference]: With dead ends: 7170 [2021-06-05 06:44:15,177 INFO L226 Difference]: Without dead ends: 7170 [2021-06-05 06:44:15,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 344.0ms TimeCoverageRelationStatistics Valid=536, Invalid=1270, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:44:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states. [2021-06-05 06:44:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 4145. [2021-06-05 06:44:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 3.618484555984556) internal successors, (14995), 4144 states have internal predecessors, (14995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 14995 transitions. [2021-06-05 06:44:15,253 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 14995 transitions. Word has length 28 [2021-06-05 06:44:15,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:15,253 INFO L482 AbstractCegarLoop]: Abstraction has 4145 states and 14995 transitions. [2021-06-05 06:44:15,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:15,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 14995 transitions. [2021-06-05 06:44:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:15,258 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:15,258 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:15,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4044 [2021-06-05 06:44:15,458 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:15,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:15,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1712298069, now seen corresponding path program 69 times [2021-06-05 06:44:15,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:15,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450829604] [2021-06-05 06:44:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:15,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:15,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450829604] [2021-06-05 06:44:15,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450829604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:15,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745785303] [2021-06-05 06:44:15,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:15,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:44:15,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:15,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:15,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:15,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745785303] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:15,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:15,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:44:15,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356217642] [2021-06-05 06:44:15,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:15,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:15,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:15,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:15,588 INFO L87 Difference]: Start difference. First operand 4145 states and 14995 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:16,329 INFO L93 Difference]: Finished difference Result 7513 states and 25430 transitions. [2021-06-05 06:44:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:44:16,330 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:16,342 INFO L225 Difference]: With dead ends: 7513 [2021-06-05 06:44:16,342 INFO L226 Difference]: Without dead ends: 7509 [2021-06-05 06:44:16,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 419.0ms TimeCoverageRelationStatistics Valid=697, Invalid=2495, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:44:16,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2021-06-05 06:44:16,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 4037. [2021-06-05 06:44:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4037 states, 4036 states have (on average 3.627601585728444) internal successors, (14641), 4036 states have internal predecessors, (14641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:16,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4037 states to 4037 states and 14641 transitions. [2021-06-05 06:44:16,437 INFO L78 Accepts]: Start accepts. Automaton has 4037 states and 14641 transitions. Word has length 28 [2021-06-05 06:44:16,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:16,437 INFO L482 AbstractCegarLoop]: Abstraction has 4037 states and 14641 transitions. [2021-06-05 06:44:16,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4037 states and 14641 transitions. [2021-06-05 06:44:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:16,442 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:16,442 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:16,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4045 [2021-06-05 06:44:16,643 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:16,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:16,643 INFO L82 PathProgramCache]: Analyzing trace with hash 307959399, now seen corresponding path program 81 times [2021-06-05 06:44:16,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:16,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181293110] [2021-06-05 06:44:16,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:16,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:16,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181293110] [2021-06-05 06:44:16,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181293110] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:16,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950286702] [2021-06-05 06:44:16,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:16,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:44:16,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:16,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:16,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:16,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950286702] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:16,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:16,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:44:16,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516244423] [2021-06-05 06:44:16,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:16,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:16,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:16,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:16,772 INFO L87 Difference]: Start difference. First operand 4037 states and 14641 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:17,561 INFO L93 Difference]: Finished difference Result 8340 states and 27997 transitions. [2021-06-05 06:44:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:44:17,562 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:17,574 INFO L225 Difference]: With dead ends: 8340 [2021-06-05 06:44:17,574 INFO L226 Difference]: Without dead ends: 8331 [2021-06-05 06:44:17,574 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 438.8ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:44:17,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8331 states. [2021-06-05 06:44:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8331 to 4477. [2021-06-05 06:44:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 4476 states have (on average 3.7155942806076854) internal successors, (16631), 4476 states have internal predecessors, (16631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 16631 transitions. [2021-06-05 06:44:17,659 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 16631 transitions. Word has length 28 [2021-06-05 06:44:17,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:17,659 INFO L482 AbstractCegarLoop]: Abstraction has 4477 states and 16631 transitions. [2021-06-05 06:44:17,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:17,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 16631 transitions. [2021-06-05 06:44:17,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:17,664 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:17,665 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:17,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4046 [2021-06-05 06:44:17,865 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:17,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1945666497, now seen corresponding path program 82 times [2021-06-05 06:44:17,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:17,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962927512] [2021-06-05 06:44:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:17,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:17,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962927512] [2021-06-05 06:44:17,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962927512] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:17,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708516162] [2021-06-05 06:44:17,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:17,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:17,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:17,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:17,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:17,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708516162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:17,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:17,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:44:17,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289736605] [2021-06-05 06:44:17,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:17,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:17,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:17,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:17,992 INFO L87 Difference]: Start difference. First operand 4477 states and 16631 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:18,762 INFO L93 Difference]: Finished difference Result 8630 states and 28901 transitions. [2021-06-05 06:44:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:44:18,762 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:18,775 INFO L225 Difference]: With dead ends: 8630 [2021-06-05 06:44:18,775 INFO L226 Difference]: Without dead ends: 8630 [2021-06-05 06:44:18,775 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 482.5ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:44:18,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8630 states. [2021-06-05 06:44:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8630 to 4491. [2021-06-05 06:44:18,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 4490 states have (on average 3.7028953229398662) internal successors, (16626), 4490 states have internal predecessors, (16626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 16626 transitions. [2021-06-05 06:44:18,865 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 16626 transitions. Word has length 28 [2021-06-05 06:44:18,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:18,865 INFO L482 AbstractCegarLoop]: Abstraction has 4491 states and 16626 transitions. [2021-06-05 06:44:18,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:18,865 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 16626 transitions. [2021-06-05 06:44:18,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:18,871 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:18,871 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:19,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4047,152 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:19,072 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:19,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1145894509, now seen corresponding path program 83 times [2021-06-05 06:44:19,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:19,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909544202] [2021-06-05 06:44:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:19,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:19,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909544202] [2021-06-05 06:44:19,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909544202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:19,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912382427] [2021-06-05 06:44:19,111 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:19,134 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:44:19,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:19,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:19,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:19,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912382427] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:19,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:19,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:44:19,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952250700] [2021-06-05 06:44:19,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:19,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:19,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:19,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:19,189 INFO L87 Difference]: Start difference. First operand 4491 states and 16626 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:19,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:19,573 INFO L93 Difference]: Finished difference Result 8035 states and 28348 transitions. [2021-06-05 06:44:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:44:19,573 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:19,586 INFO L225 Difference]: With dead ends: 8035 [2021-06-05 06:44:19,586 INFO L226 Difference]: Without dead ends: 7938 [2021-06-05 06:44:19,586 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 213.1ms TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:44:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2021-06-05 06:44:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 5963. [2021-06-05 06:44:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5963 states, 5962 states have (on average 3.763837638376384) internal successors, (22440), 5962 states have internal predecessors, (22440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5963 states to 5963 states and 22440 transitions. [2021-06-05 06:44:19,717 INFO L78 Accepts]: Start accepts. Automaton has 5963 states and 22440 transitions. Word has length 28 [2021-06-05 06:44:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:19,717 INFO L482 AbstractCegarLoop]: Abstraction has 5963 states and 22440 transitions. [2021-06-05 06:44:19,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:19,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5963 states and 22440 transitions. [2021-06-05 06:44:19,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:19,725 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:19,726 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:19,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4048,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:19,926 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:19,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:19,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1941057807, now seen corresponding path program 84 times [2021-06-05 06:44:19,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:19,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178593418] [2021-06-05 06:44:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:19,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:19,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178593418] [2021-06-05 06:44:19,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178593418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:19,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704232906] [2021-06-05 06:44:19,951 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:19,974 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:44:19,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:19,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:19,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:20,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704232906] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:20,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:20,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-05 06:44:20,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184763380] [2021-06-05 06:44:20,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:44:20,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:20,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:44:20,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:44:20,024 INFO L87 Difference]: Start difference. First operand 5963 states and 22440 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:20,185 INFO L93 Difference]: Finished difference Result 8287 states and 29195 transitions. [2021-06-05 06:44:20,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:44:20,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:20,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:20,198 INFO L225 Difference]: With dead ends: 8287 [2021-06-05 06:44:20,198 INFO L226 Difference]: Without dead ends: 8287 [2021-06-05 06:44:20,198 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:44:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8287 states. [2021-06-05 06:44:20,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8287 to 6088. [2021-06-05 06:44:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6088 states, 6087 states have (on average 3.741416132741909) internal successors, (22774), 6087 states have internal predecessors, (22774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6088 states to 6088 states and 22774 transitions. [2021-06-05 06:44:20,294 INFO L78 Accepts]: Start accepts. Automaton has 6088 states and 22774 transitions. Word has length 28 [2021-06-05 06:44:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:20,295 INFO L482 AbstractCegarLoop]: Abstraction has 6088 states and 22774 transitions. [2021-06-05 06:44:20,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:20,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6088 states and 22774 transitions. [2021-06-05 06:44:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:20,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:20,302 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:20,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4049,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:20,503 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:20,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:20,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1010858063, now seen corresponding path program 85 times [2021-06-05 06:44:20,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:20,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855565317] [2021-06-05 06:44:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:20,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:20,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855565317] [2021-06-05 06:44:20,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855565317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:20,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776616473] [2021-06-05 06:44:20,543 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:20,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:20,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:20,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776616473] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:20,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:20,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:44:20,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512578911] [2021-06-05 06:44:20,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:20,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:20,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:20,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:20,633 INFO L87 Difference]: Start difference. First operand 6088 states and 22774 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:21,305 INFO L93 Difference]: Finished difference Result 12628 states and 43945 transitions. [2021-06-05 06:44:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 06:44:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:21,326 INFO L225 Difference]: With dead ends: 12628 [2021-06-05 06:44:21,327 INFO L226 Difference]: Without dead ends: 12628 [2021-06-05 06:44:21,327 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 393.6ms TimeCoverageRelationStatistics Valid=657, Invalid=2205, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:44:21,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12628 states. [2021-06-05 06:44:21,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12628 to 6761. [2021-06-05 06:44:21,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6761 states, 6760 states have (on average 3.7547337278106507) internal successors, (25382), 6760 states have internal predecessors, (25382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:21,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 25382 transitions. [2021-06-05 06:44:21,526 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 25382 transitions. Word has length 28 [2021-06-05 06:44:21,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:21,526 INFO L482 AbstractCegarLoop]: Abstraction has 6761 states and 25382 transitions. [2021-06-05 06:44:21,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:21,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 25382 transitions. [2021-06-05 06:44:21,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:21,536 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:21,536 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:21,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4050 [2021-06-05 06:44:21,737 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:21,737 INFO L82 PathProgramCache]: Analyzing trace with hash 891821389, now seen corresponding path program 86 times [2021-06-05 06:44:21,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:21,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702422991] [2021-06-05 06:44:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:21,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:21,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702422991] [2021-06-05 06:44:21,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702422991] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:21,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309866708] [2021-06-05 06:44:21,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:21,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:21,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:21,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:21,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:21,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309866708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:21,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:21,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-05 06:44:21,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413138158] [2021-06-05 06:44:21,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:21,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:21,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:21,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:21,869 INFO L87 Difference]: Start difference. First operand 6761 states and 25382 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:22,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:22,491 INFO L93 Difference]: Finished difference Result 12791 states and 44537 transitions. [2021-06-05 06:44:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:44:22,492 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:22,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:22,513 INFO L225 Difference]: With dead ends: 12791 [2021-06-05 06:44:22,513 INFO L226 Difference]: Without dead ends: 12791 [2021-06-05 06:44:22,513 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 344.6ms TimeCoverageRelationStatistics Valid=542, Invalid=1908, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:44:22,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12791 states. [2021-06-05 06:44:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12791 to 6999. [2021-06-05 06:44:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6999 states, 6998 states have (on average 3.734352672192055) internal successors, (26133), 6998 states have internal predecessors, (26133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 26133 transitions. [2021-06-05 06:44:22,660 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 26133 transitions. Word has length 28 [2021-06-05 06:44:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:22,660 INFO L482 AbstractCegarLoop]: Abstraction has 6999 states and 26133 transitions. [2021-06-05 06:44:22,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:22,660 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 26133 transitions. [2021-06-05 06:44:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:22,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:22,670 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:22,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4051,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:22,870 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:22,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:22,871 INFO L82 PathProgramCache]: Analyzing trace with hash -191201267, now seen corresponding path program 87 times [2021-06-05 06:44:22,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:22,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507426342] [2021-06-05 06:44:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:22,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:22,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507426342] [2021-06-05 06:44:22,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507426342] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:22,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405072474] [2021-06-05 06:44:22,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:22,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:44:22,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:22,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 06:44:22,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:23,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405072474] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:23,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:23,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-05 06:44:23,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811371694] [2021-06-05 06:44:23,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:23,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:23,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:23,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:23,027 INFO L87 Difference]: Start difference. First operand 6999 states and 26133 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:23,766 INFO L93 Difference]: Finished difference Result 9904 states and 35142 transitions. [2021-06-05 06:44:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:44:23,767 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:23,784 INFO L225 Difference]: With dead ends: 9904 [2021-06-05 06:44:23,784 INFO L226 Difference]: Without dead ends: 9816 [2021-06-05 06:44:23,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 463.5ms TimeCoverageRelationStatistics Valid=534, Invalid=1916, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:44:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9816 states. [2021-06-05 06:44:23,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9816 to 7496. [2021-06-05 06:44:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 7495 states have (on average 3.741160773849233) internal successors, (28040), 7495 states have internal predecessors, (28040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 28040 transitions. [2021-06-05 06:44:23,914 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 28040 transitions. Word has length 28 [2021-06-05 06:44:23,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:23,914 INFO L482 AbstractCegarLoop]: Abstraction has 7496 states and 28040 transitions. [2021-06-05 06:44:23,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:23,914 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 28040 transitions. [2021-06-05 06:44:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:23,925 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:23,925 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:24,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4052 [2021-06-05 06:44:24,125 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:24,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:24,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1279876851, now seen corresponding path program 88 times [2021-06-05 06:44:24,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:24,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663985744] [2021-06-05 06:44:24,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:24,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:24,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663985744] [2021-06-05 06:44:24,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663985744] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:24,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81743708] [2021-06-05 06:44:24,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:24,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:24,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:24,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:24,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:24,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81743708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:24,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:24,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:44:24,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978025079] [2021-06-05 06:44:24,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:44:24,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:24,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:44:24,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:44:24,232 INFO L87 Difference]: Start difference. First operand 7496 states and 28040 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:24,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:24,542 INFO L93 Difference]: Finished difference Result 11192 states and 39947 transitions. [2021-06-05 06:44:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:44:24,542 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:24,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:24,560 INFO L225 Difference]: With dead ends: 11192 [2021-06-05 06:44:24,560 INFO L226 Difference]: Without dead ends: 11192 [2021-06-05 06:44:24,561 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 172.2ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:44:24,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11192 states. [2021-06-05 06:44:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11192 to 8528. [2021-06-05 06:44:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8528 states, 8527 states have (on average 3.7686173331769672) internal successors, (32135), 8527 states have internal predecessors, (32135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8528 states to 8528 states and 32135 transitions. [2021-06-05 06:44:24,764 INFO L78 Accepts]: Start accepts. Automaton has 8528 states and 32135 transitions. Word has length 28 [2021-06-05 06:44:24,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:24,764 INFO L482 AbstractCegarLoop]: Abstraction has 8528 states and 32135 transitions. [2021-06-05 06:44:24,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:24,764 INFO L276 IsEmpty]: Start isEmpty. Operand 8528 states and 32135 transitions. [2021-06-05 06:44:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:24,776 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:24,776 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:24,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4053 [2021-06-05 06:44:24,976 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:24,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:24,976 INFO L82 PathProgramCache]: Analyzing trace with hash 847000247, now seen corresponding path program 89 times [2021-06-05 06:44:24,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:24,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913272054] [2021-06-05 06:44:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:25,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:25,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913272054] [2021-06-05 06:44:25,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913272054] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:25,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398932950] [2021-06-05 06:44:25,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:25,032 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:44:25,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:25,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:25,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:25,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398932950] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:25,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:25,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-05 06:44:25,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277230837] [2021-06-05 06:44:25,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:25,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:25,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:25,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:25,084 INFO L87 Difference]: Start difference. First operand 8528 states and 32135 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:25,643 INFO L93 Difference]: Finished difference Result 14252 states and 50831 transitions. [2021-06-05 06:44:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:44:25,643 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:25,669 INFO L225 Difference]: With dead ends: 14252 [2021-06-05 06:44:25,669 INFO L226 Difference]: Without dead ends: 14248 [2021-06-05 06:44:25,669 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 299.4ms TimeCoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:44:25,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14248 states. [2021-06-05 06:44:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14248 to 8428. [2021-06-05 06:44:25,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 8427 states have (on average 3.77251690993236) internal successors, (31791), 8427 states have internal predecessors, (31791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 31791 transitions. [2021-06-05 06:44:25,848 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 31791 transitions. Word has length 28 [2021-06-05 06:44:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:25,848 INFO L482 AbstractCegarLoop]: Abstraction has 8428 states and 31791 transitions. [2021-06-05 06:44:25,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 31791 transitions. [2021-06-05 06:44:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:25,861 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:25,861 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:26,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4054 [2021-06-05 06:44:26,061 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:26,061 INFO L82 PathProgramCache]: Analyzing trace with hash 795274241, now seen corresponding path program 90 times [2021-06-05 06:44:26,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:26,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326995521] [2021-06-05 06:44:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:26,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:26,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326995521] [2021-06-05 06:44:26,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326995521] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:26,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862168541] [2021-06-05 06:44:26,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:26,114 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:44:26,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:26,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:26,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:26,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862168541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:26,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:26,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:44:26,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623276231] [2021-06-05 06:44:26,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:26,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:26,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:26,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:26,173 INFO L87 Difference]: Start difference. First operand 8428 states and 31791 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:26,596 INFO L93 Difference]: Finished difference Result 11465 states and 40959 transitions. [2021-06-05 06:44:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:44:26,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:26,614 INFO L225 Difference]: With dead ends: 11465 [2021-06-05 06:44:26,615 INFO L226 Difference]: Without dead ends: 11465 [2021-06-05 06:44:26,615 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 215.0ms TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:44:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11465 states. [2021-06-05 06:44:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11465 to 8331. [2021-06-05 06:44:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8331 states, 8330 states have (on average 3.768667466986795) internal successors, (31393), 8330 states have internal predecessors, (31393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8331 states to 8331 states and 31393 transitions. [2021-06-05 06:44:26,754 INFO L78 Accepts]: Start accepts. Automaton has 8331 states and 31393 transitions. Word has length 28 [2021-06-05 06:44:26,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:26,754 INFO L482 AbstractCegarLoop]: Abstraction has 8331 states and 31393 transitions. [2021-06-05 06:44:26,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 8331 states and 31393 transitions. [2021-06-05 06:44:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:26,766 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:26,766 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:26,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4055 [2021-06-05 06:44:26,966 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:26,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1444336905, now seen corresponding path program 91 times [2021-06-05 06:44:26,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:26,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069369521] [2021-06-05 06:44:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:27,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:27,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069369521] [2021-06-05 06:44:27,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069369521] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:27,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278390944] [2021-06-05 06:44:27,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:27,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:27,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:27,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278390944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:27,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:27,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:44:27,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298689403] [2021-06-05 06:44:27,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:27,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:27,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:27,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:27,079 INFO L87 Difference]: Start difference. First operand 8331 states and 31393 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:27,704 INFO L93 Difference]: Finished difference Result 14086 states and 50169 transitions. [2021-06-05 06:44:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:44:27,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:27,730 INFO L225 Difference]: With dead ends: 14086 [2021-06-05 06:44:27,730 INFO L226 Difference]: Without dead ends: 14074 [2021-06-05 06:44:27,730 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 340.3ms TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:44:27,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14074 states. [2021-06-05 06:44:27,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14074 to 8331. [2021-06-05 06:44:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8331 states, 8330 states have (on average 3.768187274909964) internal successors, (31389), 8330 states have internal predecessors, (31389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8331 states to 8331 states and 31389 transitions. [2021-06-05 06:44:27,901 INFO L78 Accepts]: Start accepts. Automaton has 8331 states and 31389 transitions. Word has length 28 [2021-06-05 06:44:27,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:27,901 INFO L482 AbstractCegarLoop]: Abstraction has 8331 states and 31389 transitions. [2021-06-05 06:44:27,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:27,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8331 states and 31389 transitions. [2021-06-05 06:44:27,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:27,913 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:27,913 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:28,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4056 [2021-06-05 06:44:28,114 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:28,114 INFO L82 PathProgramCache]: Analyzing trace with hash -323944011, now seen corresponding path program 92 times [2021-06-05 06:44:28,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:28,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268548839] [2021-06-05 06:44:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:28,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:28,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268548839] [2021-06-05 06:44:28,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268548839] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:28,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190311429] [2021-06-05 06:44:28,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:28,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:28,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:28,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:28,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:28,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190311429] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:28,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:28,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:44:28,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996744938] [2021-06-05 06:44:28,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:28,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:28,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:28,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:28,284 INFO L87 Difference]: Start difference. First operand 8331 states and 31389 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:29,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:29,384 INFO L93 Difference]: Finished difference Result 21250 states and 74521 transitions. [2021-06-05 06:44:29,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 06:44:29,384 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:29,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:29,423 INFO L225 Difference]: With dead ends: 21250 [2021-06-05 06:44:29,423 INFO L226 Difference]: Without dead ends: 21250 [2021-06-05 06:44:29,424 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 696.2ms TimeCoverageRelationStatistics Valid=1218, Invalid=4482, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 06:44:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21250 states. [2021-06-05 06:44:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21250 to 11363. [2021-06-05 06:44:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11363 states, 11362 states have (on average 3.808924485125858) internal successors, (43277), 11362 states have internal predecessors, (43277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11363 states to 11363 states and 43277 transitions. [2021-06-05 06:44:29,787 INFO L78 Accepts]: Start accepts. Automaton has 11363 states and 43277 transitions. Word has length 28 [2021-06-05 06:44:29,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:29,788 INFO L482 AbstractCegarLoop]: Abstraction has 11363 states and 43277 transitions. [2021-06-05 06:44:29,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 11363 states and 43277 transitions. [2021-06-05 06:44:29,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:29,805 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:29,805 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:30,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4057 [2021-06-05 06:44:30,005 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:30,006 INFO L82 PathProgramCache]: Analyzing trace with hash -242567923, now seen corresponding path program 93 times [2021-06-05 06:44:30,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:30,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135279044] [2021-06-05 06:44:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:30,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:30,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135279044] [2021-06-05 06:44:30,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135279044] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:30,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63246271] [2021-06-05 06:44:30,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:30,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:44:30,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:30,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:30,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:30,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63246271] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:30,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:30,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:44:30,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306313794] [2021-06-05 06:44:30,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:30,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:30,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:30,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:30,148 INFO L87 Difference]: Start difference. First operand 11363 states and 43277 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:31,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:31,129 INFO L93 Difference]: Finished difference Result 20481 states and 72514 transitions. [2021-06-05 06:44:31,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:44:31,130 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:31,166 INFO L225 Difference]: With dead ends: 20481 [2021-06-05 06:44:31,166 INFO L226 Difference]: Without dead ends: 20469 [2021-06-05 06:44:31,167 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 588.9ms TimeCoverageRelationStatistics Valid=1059, Invalid=3771, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:44:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20469 states. [2021-06-05 06:44:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20469 to 11177. [2021-06-05 06:44:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11177 states, 11176 states have (on average 3.815139584824624) internal successors, (42638), 11176 states have internal predecessors, (42638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11177 states to 11177 states and 42638 transitions. [2021-06-05 06:44:31,457 INFO L78 Accepts]: Start accepts. Automaton has 11177 states and 42638 transitions. Word has length 28 [2021-06-05 06:44:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:31,458 INFO L482 AbstractCegarLoop]: Abstraction has 11177 states and 42638 transitions. [2021-06-05 06:44:31,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 11177 states and 42638 transitions. [2021-06-05 06:44:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:31,473 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:31,473 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:31,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4058,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:31,674 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:31,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:31,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1757659895, now seen corresponding path program 94 times [2021-06-05 06:44:31,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:31,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675558682] [2021-06-05 06:44:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:31,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:31,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675558682] [2021-06-05 06:44:31,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675558682] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:31,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431677283] [2021-06-05 06:44:31,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:31,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:31,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:31,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:31,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:31,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431677283] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:31,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:31,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:44:31,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650338617] [2021-06-05 06:44:31,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:31,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:31,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:31,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:31,863 INFO L87 Difference]: Start difference. First operand 11177 states and 42638 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:32,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:32,840 INFO L93 Difference]: Finished difference Result 20316 states and 71936 transitions. [2021-06-05 06:44:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:44:32,840 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:32,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:32,876 INFO L225 Difference]: With dead ends: 20316 [2021-06-05 06:44:32,876 INFO L226 Difference]: Without dead ends: 20280 [2021-06-05 06:44:32,877 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 588.3ms TimeCoverageRelationStatistics Valid=906, Invalid=3384, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 06:44:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20280 states. [2021-06-05 06:44:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20280 to 11229. [2021-06-05 06:44:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11229 states, 11228 states have (on average 3.813323833273958) internal successors, (42816), 11228 states have internal predecessors, (42816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11229 states to 11229 states and 42816 transitions. [2021-06-05 06:44:33,156 INFO L78 Accepts]: Start accepts. Automaton has 11229 states and 42816 transitions. Word has length 28 [2021-06-05 06:44:33,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:33,156 INFO L482 AbstractCegarLoop]: Abstraction has 11229 states and 42816 transitions. [2021-06-05 06:44:33,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:33,156 INFO L276 IsEmpty]: Start isEmpty. Operand 11229 states and 42816 transitions. [2021-06-05 06:44:33,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:33,171 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:33,171 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:33,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4059 [2021-06-05 06:44:33,372 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:33,372 INFO L82 PathProgramCache]: Analyzing trace with hash -160533179, now seen corresponding path program 95 times [2021-06-05 06:44:33,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:33,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545078422] [2021-06-05 06:44:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:33,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:33,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545078422] [2021-06-05 06:44:33,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545078422] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:33,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137666658] [2021-06-05 06:44:33,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:33,440 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:44:33,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:33,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:33,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:33,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137666658] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:33,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:33,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:44:33,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103738931] [2021-06-05 06:44:33,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:33,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:33,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:33,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:33,528 INFO L87 Difference]: Start difference. First operand 11229 states and 42816 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:34,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:34,833 INFO L93 Difference]: Finished difference Result 20201 states and 71663 transitions. [2021-06-05 06:44:34,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-05 06:44:34,833 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:34,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:34,871 INFO L225 Difference]: With dead ends: 20201 [2021-06-05 06:44:34,871 INFO L226 Difference]: Without dead ends: 20201 [2021-06-05 06:44:34,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 861.7ms TimeCoverageRelationStatistics Valid=1494, Invalid=5646, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:44:34,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20201 states. [2021-06-05 06:44:35,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20201 to 11425. [2021-06-05 06:44:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11425 states, 11424 states have (on average 3.804796918767507) internal successors, (43466), 11424 states have internal predecessors, (43466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11425 states to 11425 states and 43466 transitions. [2021-06-05 06:44:35,151 INFO L78 Accepts]: Start accepts. Automaton has 11425 states and 43466 transitions. Word has length 28 [2021-06-05 06:44:35,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:35,151 INFO L482 AbstractCegarLoop]: Abstraction has 11425 states and 43466 transitions. [2021-06-05 06:44:35,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:35,152 INFO L276 IsEmpty]: Start isEmpty. Operand 11425 states and 43466 transitions. [2021-06-05 06:44:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:35,168 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:35,168 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:35,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4060,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:35,369 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:35,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:35,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1482505975, now seen corresponding path program 96 times [2021-06-05 06:44:35,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:35,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394705076] [2021-06-05 06:44:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:35,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:35,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394705076] [2021-06-05 06:44:35,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394705076] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:35,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944182710] [2021-06-05 06:44:35,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:35,435 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 06:44:35,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:35,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:35,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:35,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944182710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:35,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:35,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:44:35,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557891758] [2021-06-05 06:44:35,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:35,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:35,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:35,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:35,522 INFO L87 Difference]: Start difference. First operand 11425 states and 43466 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:36,725 INFO L93 Difference]: Finished difference Result 19821 states and 70618 transitions. [2021-06-05 06:44:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:44:36,726 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:36,763 INFO L225 Difference]: With dead ends: 19821 [2021-06-05 06:44:36,763 INFO L226 Difference]: Without dead ends: 19809 [2021-06-05 06:44:36,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 702.5ms TimeCoverageRelationStatistics Valid=1305, Invalid=4547, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 06:44:36,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19809 states. [2021-06-05 06:44:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19809 to 11307. [2021-06-05 06:44:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11307 states, 11306 states have (on average 3.8090394480806653) internal successors, (43065), 11306 states have internal predecessors, (43065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11307 states to 11307 states and 43065 transitions. [2021-06-05 06:44:37,033 INFO L78 Accepts]: Start accepts. Automaton has 11307 states and 43065 transitions. Word has length 28 [2021-06-05 06:44:37,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:37,034 INFO L482 AbstractCegarLoop]: Abstraction has 11307 states and 43065 transitions. [2021-06-05 06:44:37,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 11307 states and 43065 transitions. [2021-06-05 06:44:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:37,050 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:37,050 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:37,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4061,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:37,251 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:37,251 INFO L82 PathProgramCache]: Analyzing trace with hash 215048797, now seen corresponding path program 97 times [2021-06-05 06:44:37,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:37,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706874686] [2021-06-05 06:44:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:37,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:37,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706874686] [2021-06-05 06:44:37,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706874686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:37,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305321637] [2021-06-05 06:44:37,289 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:37,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:37,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:37,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305321637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:37,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:37,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-05 06:44:37,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703130566] [2021-06-05 06:44:37,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:37,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:37,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:37,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:37,382 INFO L87 Difference]: Start difference. First operand 11307 states and 43065 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:38,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:38,480 INFO L93 Difference]: Finished difference Result 19061 states and 68534 transitions. [2021-06-05 06:44:38,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:44:38,481 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:38,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:38,519 INFO L225 Difference]: With dead ends: 19061 [2021-06-05 06:44:38,520 INFO L226 Difference]: Without dead ends: 19025 [2021-06-05 06:44:38,520 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 575.7ms TimeCoverageRelationStatistics Valid=951, Invalid=3471, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:44:38,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19025 states. [2021-06-05 06:44:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19025 to 11331. [2021-06-05 06:44:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11331 states, 11330 states have (on average 3.8080317740511913) internal successors, (43145), 11330 states have internal predecessors, (43145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11331 states to 11331 states and 43145 transitions. [2021-06-05 06:44:38,801 INFO L78 Accepts]: Start accepts. Automaton has 11331 states and 43145 transitions. Word has length 28 [2021-06-05 06:44:38,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:38,801 INFO L482 AbstractCegarLoop]: Abstraction has 11331 states and 43145 transitions. [2021-06-05 06:44:38,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:38,801 INFO L276 IsEmpty]: Start isEmpty. Operand 11331 states and 43145 transitions. [2021-06-05 06:44:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:38,817 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:38,817 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:39,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4062 [2021-06-05 06:44:39,017 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1691162673, now seen corresponding path program 98 times [2021-06-05 06:44:39,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:39,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121970336] [2021-06-05 06:44:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:39,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:39,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121970336] [2021-06-05 06:44:39,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121970336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:39,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319452203] [2021-06-05 06:44:39,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:39,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:39,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:39,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:39,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:39,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319452203] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:39,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:39,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:39,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435405584] [2021-06-05 06:44:39,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:39,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:39,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:39,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:39,173 INFO L87 Difference]: Start difference. First operand 11331 states and 43145 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:40,395 INFO L93 Difference]: Finished difference Result 27696 states and 98852 transitions. [2021-06-05 06:44:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 06:44:40,396 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:40,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:40,454 INFO L225 Difference]: With dead ends: 27696 [2021-06-05 06:44:40,455 INFO L226 Difference]: Without dead ends: 27696 [2021-06-05 06:44:40,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 731.4ms TimeCoverageRelationStatistics Valid=1326, Invalid=4680, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 06:44:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27696 states. [2021-06-05 06:44:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27696 to 11621. [2021-06-05 06:44:40,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11621 states, 11620 states have (on average 3.831239242685026) internal successors, (44519), 11620 states have internal predecessors, (44519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11621 states to 11621 states and 44519 transitions. [2021-06-05 06:44:40,829 INFO L78 Accepts]: Start accepts. Automaton has 11621 states and 44519 transitions. Word has length 28 [2021-06-05 06:44:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:40,829 INFO L482 AbstractCegarLoop]: Abstraction has 11621 states and 44519 transitions. [2021-06-05 06:44:40,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:40,829 INFO L276 IsEmpty]: Start isEmpty. Operand 11621 states and 44519 transitions. [2021-06-05 06:44:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:40,846 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:40,846 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:41,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4063,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:41,047 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:41,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:41,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2036852543, now seen corresponding path program 99 times [2021-06-05 06:44:41,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:41,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113452671] [2021-06-05 06:44:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:41,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:41,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113452671] [2021-06-05 06:44:41,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113452671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:41,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885318737] [2021-06-05 06:44:41,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:41,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:44:41,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:41,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:41,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:41,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885318737] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:41,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:41,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:41,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445004769] [2021-06-05 06:44:41,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:41,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:41,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:41,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:41,200 INFO L87 Difference]: Start difference. First operand 11621 states and 44519 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:42,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:42,345 INFO L93 Difference]: Finished difference Result 27229 states and 97782 transitions. [2021-06-05 06:44:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 06:44:42,345 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:42,400 INFO L225 Difference]: With dead ends: 27229 [2021-06-05 06:44:42,401 INFO L226 Difference]: Without dead ends: 27229 [2021-06-05 06:44:42,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2280 ImplicationChecksByTransitivity, 701.3ms TimeCoverageRelationStatistics Valid=1315, Invalid=4537, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 06:44:42,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27229 states. [2021-06-05 06:44:42,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27229 to 11523. [2021-06-05 06:44:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11523 states, 11522 states have (on average 3.819562575941677) internal successors, (44009), 11522 states have internal predecessors, (44009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:42,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11523 states to 11523 states and 44009 transitions. [2021-06-05 06:44:42,779 INFO L78 Accepts]: Start accepts. Automaton has 11523 states and 44009 transitions. Word has length 28 [2021-06-05 06:44:42,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:42,779 INFO L482 AbstractCegarLoop]: Abstraction has 11523 states and 44009 transitions. [2021-06-05 06:44:42,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 11523 states and 44009 transitions. [2021-06-05 06:44:42,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:42,796 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:42,796 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:42,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4064 [2021-06-05 06:44:42,996 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:42,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:42,996 INFO L82 PathProgramCache]: Analyzing trace with hash 197254951, now seen corresponding path program 100 times [2021-06-05 06:44:42,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:42,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352391662] [2021-06-05 06:44:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:43,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:43,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352391662] [2021-06-05 06:44:43,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352391662] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:43,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084485536] [2021-06-05 06:44:43,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:43,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:43,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:43,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:43,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:43,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084485536] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:43,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:43,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:44:43,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33673485] [2021-06-05 06:44:43,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:43,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:43,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:43,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:43,161 INFO L87 Difference]: Start difference. First operand 11523 states and 44009 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:43,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:43,948 INFO L93 Difference]: Finished difference Result 21512 states and 77611 transitions. [2021-06-05 06:44:43,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:44:43,948 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:43,988 INFO L225 Difference]: With dead ends: 21512 [2021-06-05 06:44:43,988 INFO L226 Difference]: Without dead ends: 21512 [2021-06-05 06:44:43,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 442.5ms TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:44:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21512 states. [2021-06-05 06:44:44,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21512 to 11532. [2021-06-05 06:44:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11532 states, 11531 states have (on average 3.8185760124880757) internal successors, (44032), 11531 states have internal predecessors, (44032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11532 states to 11532 states and 44032 transitions. [2021-06-05 06:44:44,256 INFO L78 Accepts]: Start accepts. Automaton has 11532 states and 44032 transitions. Word has length 28 [2021-06-05 06:44:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:44,256 INFO L482 AbstractCegarLoop]: Abstraction has 11532 states and 44032 transitions. [2021-06-05 06:44:44,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 11532 states and 44032 transitions. [2021-06-05 06:44:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:44,273 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:44,273 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:44,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 170 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4065 [2021-06-05 06:44:44,473 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:44,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:44,474 INFO L82 PathProgramCache]: Analyzing trace with hash -477466927, now seen corresponding path program 101 times [2021-06-05 06:44:44,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:44,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906108270] [2021-06-05 06:44:44,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:44,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:44,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906108270] [2021-06-05 06:44:44,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906108270] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:44,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102407961] [2021-06-05 06:44:44,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:44,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:44:44,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:44,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:44,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:44,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102407961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:44,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:44,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:44:44,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927776853] [2021-06-05 06:44:44,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:44,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:44,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:44,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:44,619 INFO L87 Difference]: Start difference. First operand 11532 states and 44032 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:45,372 INFO L93 Difference]: Finished difference Result 19923 states and 72552 transitions. [2021-06-05 06:44:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:44:45,373 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:45,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:45,410 INFO L225 Difference]: With dead ends: 19923 [2021-06-05 06:44:45,410 INFO L226 Difference]: Without dead ends: 19923 [2021-06-05 06:44:45,410 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 427.1ms TimeCoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:44:45,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19923 states. [2021-06-05 06:44:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19923 to 11544. [2021-06-05 06:44:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11544 states, 11543 states have (on average 3.817898293337954) internal successors, (44070), 11543 states have internal predecessors, (44070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 44070 transitions. [2021-06-05 06:44:45,677 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 44070 transitions. Word has length 28 [2021-06-05 06:44:45,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:45,677 INFO L482 AbstractCegarLoop]: Abstraction has 11544 states and 44070 transitions. [2021-06-05 06:44:45,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 44070 transitions. [2021-06-05 06:44:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:45,694 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:45,694 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:45,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4066 [2021-06-05 06:44:45,894 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:45,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1175893249, now seen corresponding path program 102 times [2021-06-05 06:44:45,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:45,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092111886] [2021-06-05 06:44:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:45,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:45,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092111886] [2021-06-05 06:44:45,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092111886] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:45,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084325304] [2021-06-05 06:44:45,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:45,950 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:44:45,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:45,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:45,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:46,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:46,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084325304] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:46,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:46,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:46,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799968125] [2021-06-05 06:44:46,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:46,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:46,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:46,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:46,043 INFO L87 Difference]: Start difference. First operand 11544 states and 44070 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:47,049 INFO L93 Difference]: Finished difference Result 20543 states and 74326 transitions. [2021-06-05 06:44:47,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 06:44:47,050 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:47,088 INFO L225 Difference]: With dead ends: 20543 [2021-06-05 06:44:47,088 INFO L226 Difference]: Without dead ends: 20543 [2021-06-05 06:44:47,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 640.1ms TimeCoverageRelationStatistics Valid=1084, Invalid=4028, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 06:44:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20543 states. [2021-06-05 06:44:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20543 to 11652. [2021-06-05 06:44:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11652 states, 11651 states have (on average 3.8111750064372156) internal successors, (44404), 11651 states have internal predecessors, (44404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:47,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11652 states to 11652 states and 44404 transitions. [2021-06-05 06:44:47,453 INFO L78 Accepts]: Start accepts. Automaton has 11652 states and 44404 transitions. Word has length 28 [2021-06-05 06:44:47,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:47,453 INFO L482 AbstractCegarLoop]: Abstraction has 11652 states and 44404 transitions. [2021-06-05 06:44:47,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:47,453 INFO L276 IsEmpty]: Start isEmpty. Operand 11652 states and 44404 transitions. [2021-06-05 06:44:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:47,471 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:47,471 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:47,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4067,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:47,672 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:47,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:47,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1476034893, now seen corresponding path program 103 times [2021-06-05 06:44:47,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:47,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075827795] [2021-06-05 06:44:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:47,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:47,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075827795] [2021-06-05 06:44:47,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075827795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:47,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027432504] [2021-06-05 06:44:47,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:47,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:47,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:47,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027432504] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:47,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:47,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:47,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116589489] [2021-06-05 06:44:47,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:47,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:47,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:47,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:47,828 INFO L87 Difference]: Start difference. First operand 11652 states and 44404 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:48,788 INFO L93 Difference]: Finished difference Result 20102 states and 73128 transitions. [2021-06-05 06:44:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:44:48,789 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:48,827 INFO L225 Difference]: With dead ends: 20102 [2021-06-05 06:44:48,827 INFO L226 Difference]: Without dead ends: 20098 [2021-06-05 06:44:48,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 571.0ms TimeCoverageRelationStatistics Valid=880, Invalid=2902, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:44:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20098 states. [2021-06-05 06:44:49,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20098 to 11578. [2021-06-05 06:44:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 11577 states have (on average 3.814891595404682) internal successors, (44165), 11577 states have internal predecessors, (44165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 44165 transitions. [2021-06-05 06:44:49,098 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 44165 transitions. Word has length 28 [2021-06-05 06:44:49,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:49,098 INFO L482 AbstractCegarLoop]: Abstraction has 11578 states and 44165 transitions. [2021-06-05 06:44:49,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 44165 transitions. [2021-06-05 06:44:49,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:49,114 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:49,114 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:49,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4068 [2021-06-05 06:44:49,314 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:49,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:49,315 INFO L82 PathProgramCache]: Analyzing trace with hash 729404223, now seen corresponding path program 104 times [2021-06-05 06:44:49,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:49,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006600541] [2021-06-05 06:44:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:49,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:49,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006600541] [2021-06-05 06:44:49,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006600541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:49,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334033749] [2021-06-05 06:44:49,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:49,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:49,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:49,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:49,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:49,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334033749] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:49,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:49,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:44:49,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820771585] [2021-06-05 06:44:49,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:49,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:49,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:49,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:49,467 INFO L87 Difference]: Start difference. First operand 11578 states and 44165 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:50,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:50,530 INFO L93 Difference]: Finished difference Result 19515 states and 70543 transitions. [2021-06-05 06:44:50,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:44:50,530 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:50,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:50,569 INFO L225 Difference]: With dead ends: 19515 [2021-06-05 06:44:50,569 INFO L226 Difference]: Without dead ends: 19515 [2021-06-05 06:44:50,569 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 618.6ms TimeCoverageRelationStatistics Valid=1023, Invalid=3669, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:44:50,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19515 states. [2021-06-05 06:44:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19515 to 11805. [2021-06-05 06:44:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11805 states, 11804 states have (on average 3.8176042019654353) internal successors, (45063), 11804 states have internal predecessors, (45063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11805 states to 11805 states and 45063 transitions. [2021-06-05 06:44:50,847 INFO L78 Accepts]: Start accepts. Automaton has 11805 states and 45063 transitions. Word has length 28 [2021-06-05 06:44:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:50,847 INFO L482 AbstractCegarLoop]: Abstraction has 11805 states and 45063 transitions. [2021-06-05 06:44:50,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 11805 states and 45063 transitions. [2021-06-05 06:44:50,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:50,864 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:50,864 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:51,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4069,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:51,064 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:51,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1909723903, now seen corresponding path program 105 times [2021-06-05 06:44:51,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:51,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525219821] [2021-06-05 06:44:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:51,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:51,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525219821] [2021-06-05 06:44:51,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525219821] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:51,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978431691] [2021-06-05 06:44:51,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:51,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:44:51,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:51,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:51,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:51,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978431691] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:51,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:51,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:44:51,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795505390] [2021-06-05 06:44:51,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:51,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:51,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:51,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:51,206 INFO L87 Difference]: Start difference. First operand 11805 states and 45063 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:52,148 INFO L93 Difference]: Finished difference Result 19219 states and 69718 transitions. [2021-06-05 06:44:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:44:52,149 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:52,190 INFO L225 Difference]: With dead ends: 19219 [2021-06-05 06:44:52,190 INFO L226 Difference]: Without dead ends: 19207 [2021-06-05 06:44:52,191 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 545.5ms TimeCoverageRelationStatistics Valid=893, Invalid=3267, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:44:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19207 states. [2021-06-05 06:44:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19207 to 11907. [2021-06-05 06:44:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11907 states, 11906 states have (on average 3.81202754913489) internal successors, (45386), 11906 states have internal predecessors, (45386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11907 states to 11907 states and 45386 transitions. [2021-06-05 06:44:52,483 INFO L78 Accepts]: Start accepts. Automaton has 11907 states and 45386 transitions. Word has length 28 [2021-06-05 06:44:52,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:52,483 INFO L482 AbstractCegarLoop]: Abstraction has 11907 states and 45386 transitions. [2021-06-05 06:44:52,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:52,483 INFO L276 IsEmpty]: Start isEmpty. Operand 11907 states and 45386 transitions. [2021-06-05 06:44:52,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:52,500 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:52,500 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:52,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4070 [2021-06-05 06:44:52,716 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:52,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:52,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1714650925, now seen corresponding path program 70 times [2021-06-05 06:44:52,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:52,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998075614] [2021-06-05 06:44:52,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:52,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:52,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998075614] [2021-06-05 06:44:52,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998075614] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:52,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164905602] [2021-06-05 06:44:52,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:52,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:52,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:52,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:52,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:52,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164905602] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:52,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:52,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:44:52,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177699772] [2021-06-05 06:44:52,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:52,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:52,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:52,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:52,865 INFO L87 Difference]: Start difference. First operand 11907 states and 45386 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:53,350 INFO L93 Difference]: Finished difference Result 16719 states and 62078 transitions. [2021-06-05 06:44:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:44:53,351 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:53,383 INFO L225 Difference]: With dead ends: 16719 [2021-06-05 06:44:53,383 INFO L226 Difference]: Without dead ends: 16719 [2021-06-05 06:44:53,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 236.3ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:44:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16719 states. [2021-06-05 06:44:53,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16719 to 11979. [2021-06-05 06:44:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11979 states, 11978 states have (on average 3.8078143262648187) internal successors, (45610), 11978 states have internal predecessors, (45610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11979 states to 11979 states and 45610 transitions. [2021-06-05 06:44:53,631 INFO L78 Accepts]: Start accepts. Automaton has 11979 states and 45610 transitions. Word has length 28 [2021-06-05 06:44:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:53,632 INFO L482 AbstractCegarLoop]: Abstraction has 11979 states and 45610 transitions. [2021-06-05 06:44:53,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:53,632 INFO L276 IsEmpty]: Start isEmpty. Operand 11979 states and 45610 transitions. [2021-06-05 06:44:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:53,648 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:53,649 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:53,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4071 [2021-06-05 06:44:53,849 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:53,849 INFO L82 PathProgramCache]: Analyzing trace with hash -55855667, now seen corresponding path program 71 times [2021-06-05 06:44:53,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:53,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051891399] [2021-06-05 06:44:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:53,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:53,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051891399] [2021-06-05 06:44:53,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051891399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:53,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635366896] [2021-06-05 06:44:53,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:53,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:44:53,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:53,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:53,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:53,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635366896] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:53,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:53,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:44:53,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620248500] [2021-06-05 06:44:53,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:53,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:53,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:53,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:53,963 INFO L87 Difference]: Start difference. First operand 11979 states and 45610 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:54,450 INFO L93 Difference]: Finished difference Result 17700 states and 64924 transitions. [2021-06-05 06:44:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:44:54,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:54,485 INFO L225 Difference]: With dead ends: 17700 [2021-06-05 06:44:54,485 INFO L226 Difference]: Without dead ends: 17700 [2021-06-05 06:44:54,485 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 272.2ms TimeCoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:44:54,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17700 states. [2021-06-05 06:44:54,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17700 to 12313. [2021-06-05 06:44:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12313 states, 12312 states have (on average 3.790529564652372) internal successors, (46669), 12312 states have internal predecessors, (46669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12313 states to 12313 states and 46669 transitions. [2021-06-05 06:44:54,747 INFO L78 Accepts]: Start accepts. Automaton has 12313 states and 46669 transitions. Word has length 28 [2021-06-05 06:44:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:54,747 INFO L482 AbstractCegarLoop]: Abstraction has 12313 states and 46669 transitions. [2021-06-05 06:44:54,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 12313 states and 46669 transitions. [2021-06-05 06:44:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:54,765 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:54,765 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:54,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4072,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:54,965 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:54,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:54,966 INFO L82 PathProgramCache]: Analyzing trace with hash -100676809, now seen corresponding path program 72 times [2021-06-05 06:44:54,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:54,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194813708] [2021-06-05 06:44:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:54,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:54,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194813708] [2021-06-05 06:44:54,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194813708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:54,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828041728] [2021-06-05 06:44:54,998 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:55,026 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 06:44:55,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:55,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:55,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:55,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828041728] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:55,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:55,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:44:55,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766096221] [2021-06-05 06:44:55,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:55,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:55,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:55,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:55,079 INFO L87 Difference]: Start difference. First operand 12313 states and 46669 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:55,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:55,481 INFO L93 Difference]: Finished difference Result 17190 states and 63587 transitions. [2021-06-05 06:44:55,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:44:55,482 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:55,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:55,513 INFO L225 Difference]: With dead ends: 17190 [2021-06-05 06:44:55,514 INFO L226 Difference]: Without dead ends: 17182 [2021-06-05 06:44:55,514 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 210.0ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:44:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17182 states. [2021-06-05 06:44:55,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17182 to 12253. [2021-06-05 06:44:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12253 states, 12252 states have (on average 3.7924420502775056) internal successors, (46465), 12252 states have internal predecessors, (46465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 46465 transitions. [2021-06-05 06:44:55,798 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 46465 transitions. Word has length 28 [2021-06-05 06:44:55,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:55,798 INFO L482 AbstractCegarLoop]: Abstraction has 12253 states and 46465 transitions. [2021-06-05 06:44:55,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:55,798 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 46465 transitions. [2021-06-05 06:44:55,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:55,815 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:55,815 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:56,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4073 [2021-06-05 06:44:56,016 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:56,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:56,016 INFO L82 PathProgramCache]: Analyzing trace with hash 496659849, now seen corresponding path program 73 times [2021-06-05 06:44:56,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:56,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209659985] [2021-06-05 06:44:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:56,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:56,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209659985] [2021-06-05 06:44:56,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209659985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:56,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840014256] [2021-06-05 06:44:56,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:56,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:56,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:56,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840014256] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:56,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:56,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:44:56,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268645371] [2021-06-05 06:44:56,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:56,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:56,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:56,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:56,161 INFO L87 Difference]: Start difference. First operand 12253 states and 46465 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:56,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:56,614 INFO L93 Difference]: Finished difference Result 17090 states and 63299 transitions. [2021-06-05 06:44:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:44:56,615 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:56,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:56,647 INFO L225 Difference]: With dead ends: 17090 [2021-06-05 06:44:56,647 INFO L226 Difference]: Without dead ends: 17078 [2021-06-05 06:44:56,647 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 249.4ms TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:44:56,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17078 states. [2021-06-05 06:44:56,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17078 to 12219. [2021-06-05 06:44:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12219 states, 12218 states have (on average 3.7944017024062857) internal successors, (46360), 12218 states have internal predecessors, (46360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:56,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12219 states to 12219 states and 46360 transitions. [2021-06-05 06:44:56,887 INFO L78 Accepts]: Start accepts. Automaton has 12219 states and 46360 transitions. Word has length 28 [2021-06-05 06:44:56,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:56,887 INFO L482 AbstractCegarLoop]: Abstraction has 12219 states and 46360 transitions. [2021-06-05 06:44:56,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 12219 states and 46360 transitions. [2021-06-05 06:44:56,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:56,904 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:56,904 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:57,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4074,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:57,105 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:57,105 INFO L82 PathProgramCache]: Analyzing trace with hash -158749623, now seen corresponding path program 74 times [2021-06-05 06:44:57,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:57,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678800546] [2021-06-05 06:44:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:57,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:57,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678800546] [2021-06-05 06:44:57,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678800546] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:57,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893798856] [2021-06-05 06:44:57,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:57,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:57,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:57,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:57,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:57,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893798856] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:57,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:57,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:44:57,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263447570] [2021-06-05 06:44:57,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:57,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:57,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:57,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:57,253 INFO L87 Difference]: Start difference. First operand 12219 states and 46360 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:58,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:58,114 INFO L93 Difference]: Finished difference Result 23045 states and 82416 transitions. [2021-06-05 06:44:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:44:58,114 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:58,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:58,156 INFO L225 Difference]: With dead ends: 23045 [2021-06-05 06:44:58,156 INFO L226 Difference]: Without dead ends: 23045 [2021-06-05 06:44:58,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 484.9ms TimeCoverageRelationStatistics Valid=798, Invalid=2394, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:44:58,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23045 states. [2021-06-05 06:44:58,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23045 to 12201. [2021-06-05 06:44:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12201 states, 12200 states have (on average 3.7931967213114755) internal successors, (46277), 12200 states have internal predecessors, (46277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12201 states to 12201 states and 46277 transitions. [2021-06-05 06:44:58,490 INFO L78 Accepts]: Start accepts. Automaton has 12201 states and 46277 transitions. Word has length 28 [2021-06-05 06:44:58,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:58,490 INFO L482 AbstractCegarLoop]: Abstraction has 12201 states and 46277 transitions. [2021-06-05 06:44:58,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 12201 states and 46277 transitions. [2021-06-05 06:44:58,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:58,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:58,508 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:58,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4075,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:58,717 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:58,717 INFO L82 PathProgramCache]: Analyzing trace with hash 368022285, now seen corresponding path program 106 times [2021-06-05 06:44:58,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:58,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953148449] [2021-06-05 06:44:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:58,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:58,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953148449] [2021-06-05 06:44:58,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953148449] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:58,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591474366] [2021-06-05 06:44:58,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:58,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:58,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:58,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:58,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:58,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591474366] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:58,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:58,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:44:58,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121265033] [2021-06-05 06:44:58,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:58,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:58,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:58,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:58,847 INFO L87 Difference]: Start difference. First operand 12201 states and 46277 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:59,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:59,497 INFO L93 Difference]: Finished difference Result 18822 states and 68098 transitions. [2021-06-05 06:44:59,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:44:59,498 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:44:59,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:59,533 INFO L225 Difference]: With dead ends: 18822 [2021-06-05 06:44:59,533 INFO L226 Difference]: Without dead ends: 18806 [2021-06-05 06:44:59,534 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 347.7ms TimeCoverageRelationStatistics Valid=478, Invalid=1414, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:44:59,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18806 states. [2021-06-05 06:44:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18806 to 13509. [2021-06-05 06:44:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13509 states, 13508 states have (on average 3.85475273911756) internal successors, (52070), 13508 states have internal predecessors, (52070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:59,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13509 states to 13509 states and 52070 transitions. [2021-06-05 06:44:59,830 INFO L78 Accepts]: Start accepts. Automaton has 13509 states and 52070 transitions. Word has length 28 [2021-06-05 06:44:59,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:59,830 INFO L482 AbstractCegarLoop]: Abstraction has 13509 states and 52070 transitions. [2021-06-05 06:44:59,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13509 states and 52070 transitions. [2021-06-05 06:44:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:59,850 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:59,850 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:00,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4076 [2021-06-05 06:45:00,051 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:00,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:00,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1040435067, now seen corresponding path program 107 times [2021-06-05 06:45:00,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:00,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679131164] [2021-06-05 06:45:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:00,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:00,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679131164] [2021-06-05 06:45:00,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679131164] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:00,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77308102] [2021-06-05 06:45:00,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:00,099 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:45:00,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:00,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:00,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:00,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77308102] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:00,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:00,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:45:00,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445464110] [2021-06-05 06:45:00,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:00,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:00,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:00,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:00,176 INFO L87 Difference]: Start difference. First operand 13509 states and 52070 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:00,881 INFO L93 Difference]: Finished difference Result 18923 states and 68358 transitions. [2021-06-05 06:45:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 06:45:00,881 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:00,916 INFO L225 Difference]: With dead ends: 18923 [2021-06-05 06:45:00,916 INFO L226 Difference]: Without dead ends: 18917 [2021-06-05 06:45:00,916 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 379.2ms TimeCoverageRelationStatistics Valid=541, Invalid=1715, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:45:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18917 states. [2021-06-05 06:45:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18917 to 13479. [2021-06-05 06:45:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13479 states, 13478 states have (on average 3.8540584656477224) internal successors, (51945), 13478 states have internal predecessors, (51945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13479 states to 13479 states and 51945 transitions. [2021-06-05 06:45:01,255 INFO L78 Accepts]: Start accepts. Automaton has 13479 states and 51945 transitions. Word has length 28 [2021-06-05 06:45:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:01,255 INFO L482 AbstractCegarLoop]: Abstraction has 13479 states and 51945 transitions. [2021-06-05 06:45:01,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 13479 states and 51945 transitions. [2021-06-05 06:45:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:01,277 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:01,277 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:01,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4077,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:01,481 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:01,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:01,481 INFO L82 PathProgramCache]: Analyzing trace with hash -774903755, now seen corresponding path program 108 times [2021-06-05 06:45:01,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:01,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784238680] [2021-06-05 06:45:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:01,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:01,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:01,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784238680] [2021-06-05 06:45:01,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784238680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:01,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646807585] [2021-06-05 06:45:01,507 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:01,528 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:45:01,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:01,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:01,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:01,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646807585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:01,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:01,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-05 06:45:01,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125366168] [2021-06-05 06:45:01,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:01,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:01,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:01,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:01,602 INFO L87 Difference]: Start difference. First operand 13479 states and 51945 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:02,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:02,221 INFO L93 Difference]: Finished difference Result 21275 states and 76975 transitions. [2021-06-05 06:45:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:45:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:02,267 INFO L225 Difference]: With dead ends: 21275 [2021-06-05 06:45:02,267 INFO L226 Difference]: Without dead ends: 21259 [2021-06-05 06:45:02,267 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 318.8ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:45:02,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21259 states. [2021-06-05 06:45:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21259 to 13567. [2021-06-05 06:45:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13567 states, 13566 states have (on average 3.861270824119121) internal successors, (52382), 13566 states have internal predecessors, (52382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13567 states to 13567 states and 52382 transitions. [2021-06-05 06:45:02,599 INFO L78 Accepts]: Start accepts. Automaton has 13567 states and 52382 transitions. Word has length 28 [2021-06-05 06:45:02,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:02,599 INFO L482 AbstractCegarLoop]: Abstraction has 13567 states and 52382 transitions. [2021-06-05 06:45:02,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:02,599 INFO L276 IsEmpty]: Start isEmpty. Operand 13567 states and 52382 transitions. [2021-06-05 06:45:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:02,621 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:02,621 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:02,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4078 [2021-06-05 06:45:02,836 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:02,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:02,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1457648085, now seen corresponding path program 109 times [2021-06-05 06:45:02,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:02,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305007072] [2021-06-05 06:45:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:02,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:02,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305007072] [2021-06-05 06:45:02,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305007072] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:02,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177773653] [2021-06-05 06:45:02,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:02,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:02,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:02,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:02,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177773653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:02,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:02,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-05 06:45:02,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063451169] [2021-06-05 06:45:02,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:02,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:02,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:02,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:02,961 INFO L87 Difference]: Start difference. First operand 13567 states and 52382 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:03,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:03,761 INFO L93 Difference]: Finished difference Result 22620 states and 81208 transitions. [2021-06-05 06:45:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 06:45:03,761 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:03,806 INFO L225 Difference]: With dead ends: 22620 [2021-06-05 06:45:03,806 INFO L226 Difference]: Without dead ends: 22620 [2021-06-05 06:45:03,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 378.9ms TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:45:03,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22620 states. [2021-06-05 06:45:04,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22620 to 13595. [2021-06-05 06:45:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13595 states, 13594 states have (on average 3.8592761512431957) internal successors, (52463), 13594 states have internal predecessors, (52463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:04,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13595 states to 13595 states and 52463 transitions. [2021-06-05 06:45:04,195 INFO L78 Accepts]: Start accepts. Automaton has 13595 states and 52463 transitions. Word has length 28 [2021-06-05 06:45:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:04,195 INFO L482 AbstractCegarLoop]: Abstraction has 13595 states and 52463 transitions. [2021-06-05 06:45:04,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 13595 states and 52463 transitions. [2021-06-05 06:45:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:04,218 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:04,218 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:04,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4079 [2021-06-05 06:45:04,419 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:04,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1381492369, now seen corresponding path program 75 times [2021-06-05 06:45:04,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:04,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643779163] [2021-06-05 06:45:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:04,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:04,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643779163] [2021-06-05 06:45:04,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643779163] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:04,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592502094] [2021-06-05 06:45:04,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:04,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:45:04,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:04,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:04,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:04,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592502094] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:04,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:04,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:45:04,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857076311] [2021-06-05 06:45:04,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:04,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:04,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:04,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:04,561 INFO L87 Difference]: Start difference. First operand 13595 states and 52463 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:05,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:05,535 INFO L93 Difference]: Finished difference Result 23180 states and 85433 transitions. [2021-06-05 06:45:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 06:45:05,537 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:05,588 INFO L225 Difference]: With dead ends: 23180 [2021-06-05 06:45:05,588 INFO L226 Difference]: Without dead ends: 23176 [2021-06-05 06:45:05,589 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 563.9ms TimeCoverageRelationStatistics Valid=837, Invalid=2823, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:45:05,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23176 states. [2021-06-05 06:45:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23176 to 13849. [2021-06-05 06:45:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13849 states, 13848 states have (on average 3.849364529173888) internal successors, (53306), 13848 states have internal predecessors, (53306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13849 states to 13849 states and 53306 transitions. [2021-06-05 06:45:05,963 INFO L78 Accepts]: Start accepts. Automaton has 13849 states and 53306 transitions. Word has length 28 [2021-06-05 06:45:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:05,963 INFO L482 AbstractCegarLoop]: Abstraction has 13849 states and 53306 transitions. [2021-06-05 06:45:05,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 13849 states and 53306 transitions. [2021-06-05 06:45:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:05,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:05,984 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:06,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4080 [2021-06-05 06:45:06,193 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:06,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:06,193 INFO L82 PathProgramCache]: Analyzing trace with hash -516108431, now seen corresponding path program 110 times [2021-06-05 06:45:06,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:06,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186077175] [2021-06-05 06:45:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:06,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:06,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186077175] [2021-06-05 06:45:06,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186077175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:06,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844163309] [2021-06-05 06:45:06,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:06,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:06,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:06,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:06,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:06,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844163309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:06,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:06,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:45:06,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405257103] [2021-06-05 06:45:06,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:06,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:06,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:06,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:06,322 INFO L87 Difference]: Start difference. First operand 13849 states and 53306 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:06,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:06,957 INFO L93 Difference]: Finished difference Result 20157 states and 74048 transitions. [2021-06-05 06:45:06,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:45:06,957 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:06,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:06,999 INFO L225 Difference]: With dead ends: 20157 [2021-06-05 06:45:06,999 INFO L226 Difference]: Without dead ends: 20131 [2021-06-05 06:45:07,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 333.5ms TimeCoverageRelationStatistics Valid=449, Invalid=1273, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:45:07,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20131 states. [2021-06-05 06:45:07,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20131 to 13251. [2021-06-05 06:45:07,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 3.8595471698113206) internal successors, (51139), 13250 states have internal predecessors, (51139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 51139 transitions. [2021-06-05 06:45:07,428 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 51139 transitions. Word has length 28 [2021-06-05 06:45:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:07,428 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 51139 transitions. [2021-06-05 06:45:07,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 51139 transitions. [2021-06-05 06:45:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:07,450 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:07,450 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:07,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4081,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:07,665 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:07,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:07,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1198852761, now seen corresponding path program 111 times [2021-06-05 06:45:07,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:07,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532716075] [2021-06-05 06:45:07,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:07,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:07,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532716075] [2021-06-05 06:45:07,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532716075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:07,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857939309] [2021-06-05 06:45:07,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:07,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:45:07,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:07,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:07,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:07,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857939309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:07,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:07,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:45:07,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541957595] [2021-06-05 06:45:07,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:07,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:07,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:07,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:07,801 INFO L87 Difference]: Start difference. First operand 13251 states and 51139 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:08,512 INFO L93 Difference]: Finished difference Result 19214 states and 69517 transitions. [2021-06-05 06:45:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:45:08,512 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:08,548 INFO L225 Difference]: With dead ends: 19214 [2021-06-05 06:45:08,548 INFO L226 Difference]: Without dead ends: 19214 [2021-06-05 06:45:08,549 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 408.9ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:45:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19214 states. [2021-06-05 06:45:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19214 to 13464. [2021-06-05 06:45:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13464 states, 13463 states have (on average 3.854935749832875) internal successors, (51899), 13463 states have internal predecessors, (51899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13464 states to 13464 states and 51899 transitions. [2021-06-05 06:45:08,839 INFO L78 Accepts]: Start accepts. Automaton has 13464 states and 51899 transitions. Word has length 28 [2021-06-05 06:45:08,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:08,839 INFO L482 AbstractCegarLoop]: Abstraction has 13464 states and 51899 transitions. [2021-06-05 06:45:08,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 13464 states and 51899 transitions. [2021-06-05 06:45:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:08,859 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:08,859 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:09,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4082,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:09,060 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:09,060 INFO L82 PathProgramCache]: Analyzing trace with hash -674876415, now seen corresponding path program 112 times [2021-06-05 06:45:09,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:09,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993627736] [2021-06-05 06:45:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:09,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:09,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993627736] [2021-06-05 06:45:09,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993627736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:09,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898253916] [2021-06-05 06:45:09,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:09,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:09,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:09,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:09,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:09,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898253916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:09,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:09,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:45:09,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949837339] [2021-06-05 06:45:09,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:09,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:09,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:09,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:09,187 INFO L87 Difference]: Start difference. First operand 13464 states and 51899 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:09,876 INFO L93 Difference]: Finished difference Result 20483 states and 74562 transitions. [2021-06-05 06:45:09,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:45:09,876 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:09,917 INFO L225 Difference]: With dead ends: 20483 [2021-06-05 06:45:09,917 INFO L226 Difference]: Without dead ends: 20483 [2021-06-05 06:45:09,918 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 394.6ms TimeCoverageRelationStatistics Valid=505, Invalid=1301, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:45:09,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20483 states. [2021-06-05 06:45:10,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20483 to 14177. [2021-06-05 06:45:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14177 states, 14176 states have (on average 3.8409988713318284) internal successors, (54450), 14176 states have internal predecessors, (54450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14177 states to 14177 states and 54450 transitions. [2021-06-05 06:45:10,292 INFO L78 Accepts]: Start accepts. Automaton has 14177 states and 54450 transitions. Word has length 28 [2021-06-05 06:45:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:10,292 INFO L482 AbstractCegarLoop]: Abstraction has 14177 states and 54450 transitions. [2021-06-05 06:45:10,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 14177 states and 54450 transitions. [2021-06-05 06:45:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:10,312 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:10,312 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:10,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4083 [2021-06-05 06:45:10,525 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:10,525 INFO L82 PathProgramCache]: Analyzing trace with hash 78789957, now seen corresponding path program 113 times [2021-06-05 06:45:10,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:10,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267397676] [2021-06-05 06:45:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:10,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:10,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267397676] [2021-06-05 06:45:10,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267397676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:10,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201278879] [2021-06-05 06:45:10,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:10,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:45:10,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:10,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:10,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:10,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201278879] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:10,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:10,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:45:10,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346621290] [2021-06-05 06:45:10,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:10,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:10,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:10,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:10,652 INFO L87 Difference]: Start difference. First operand 14177 states and 54450 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:11,519 INFO L93 Difference]: Finished difference Result 22983 states and 82487 transitions. [2021-06-05 06:45:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:45:11,520 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:11,568 INFO L225 Difference]: With dead ends: 22983 [2021-06-05 06:45:11,568 INFO L226 Difference]: Without dead ends: 22983 [2021-06-05 06:45:11,568 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 488.4ms TimeCoverageRelationStatistics Valid=698, Invalid=1752, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:45:11,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22983 states. [2021-06-05 06:45:11,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22983 to 14420. [2021-06-05 06:45:11,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14420 states, 14419 states have (on average 3.8541507732852485) internal successors, (55573), 14419 states have internal predecessors, (55573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14420 states to 14420 states and 55573 transitions. [2021-06-05 06:45:11,914 INFO L78 Accepts]: Start accepts. Automaton has 14420 states and 55573 transitions. Word has length 28 [2021-06-05 06:45:11,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:11,914 INFO L482 AbstractCegarLoop]: Abstraction has 14420 states and 55573 transitions. [2021-06-05 06:45:11,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 14420 states and 55573 transitions. [2021-06-05 06:45:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:11,936 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:11,936 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:12,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4084,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:12,149 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:12,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:12,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1952101299, now seen corresponding path program 76 times [2021-06-05 06:45:12,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:12,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622731295] [2021-06-05 06:45:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:12,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:12,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622731295] [2021-06-05 06:45:12,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622731295] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:12,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604987224] [2021-06-05 06:45:12,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:12,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:12,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:12,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:12,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:12,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604987224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:12,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:12,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:45:12,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143159251] [2021-06-05 06:45:12,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:12,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:12,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:12,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:12,317 INFO L87 Difference]: Start difference. First operand 14420 states and 55573 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:13,898 INFO L93 Difference]: Finished difference Result 39692 states and 142842 transitions. [2021-06-05 06:45:13,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:45:13,898 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:13,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:13,991 INFO L225 Difference]: With dead ends: 39692 [2021-06-05 06:45:13,991 INFO L226 Difference]: Without dead ends: 39692 [2021-06-05 06:45:13,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 916.7ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:45:14,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39692 states. [2021-06-05 06:45:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39692 to 15659. [2021-06-05 06:45:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15659 states, 15658 states have (on average 3.899093115340401) internal successors, (61052), 15658 states have internal predecessors, (61052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15659 states to 15659 states and 61052 transitions. [2021-06-05 06:45:14,598 INFO L78 Accepts]: Start accepts. Automaton has 15659 states and 61052 transitions. Word has length 28 [2021-06-05 06:45:14,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:14,599 INFO L482 AbstractCegarLoop]: Abstraction has 15659 states and 61052 transitions. [2021-06-05 06:45:14,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:14,599 INFO L276 IsEmpty]: Start isEmpty. Operand 15659 states and 61052 transitions. [2021-06-05 06:45:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:14,622 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:14,622 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:14,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4085 [2021-06-05 06:45:14,837 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:14,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:14,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1385149219, now seen corresponding path program 77 times [2021-06-05 06:45:14,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:14,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105640033] [2021-06-05 06:45:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:14,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:14,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105640033] [2021-06-05 06:45:14,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105640033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:14,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850047139] [2021-06-05 06:45:14,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:14,902 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:45:14,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:14,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:14,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:15,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850047139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:15,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:15,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:45:15,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426332486] [2021-06-05 06:45:15,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:15,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:15,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:15,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:15,004 INFO L87 Difference]: Start difference. First operand 15659 states and 61052 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:16,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:16,469 INFO L93 Difference]: Finished difference Result 38708 states and 140253 transitions. [2021-06-05 06:45:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:45:16,469 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:16,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:16,558 INFO L225 Difference]: With dead ends: 38708 [2021-06-05 06:45:16,558 INFO L226 Difference]: Without dead ends: 38708 [2021-06-05 06:45:16,559 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 891.2ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:45:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38708 states. [2021-06-05 06:45:17,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38708 to 15633. [2021-06-05 06:45:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15633 states, 15632 states have (on average 3.895598771750256) internal successors, (60896), 15632 states have internal predecessors, (60896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15633 states to 15633 states and 60896 transitions. [2021-06-05 06:45:17,178 INFO L78 Accepts]: Start accepts. Automaton has 15633 states and 60896 transitions. Word has length 28 [2021-06-05 06:45:17,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:17,178 INFO L482 AbstractCegarLoop]: Abstraction has 15633 states and 60896 transitions. [2021-06-05 06:45:17,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:17,178 INFO L276 IsEmpty]: Start isEmpty. Operand 15633 states and 60896 transitions. [2021-06-05 06:45:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:17,204 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:17,204 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:17,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 191 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4086 [2021-06-05 06:45:17,420 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:17,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1667375567, now seen corresponding path program 114 times [2021-06-05 06:45:17,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:17,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440554295] [2021-06-05 06:45:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:17,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:17,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440554295] [2021-06-05 06:45:17,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440554295] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:17,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147947449] [2021-06-05 06:45:17,462 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:17,488 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:45:17,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:17,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:17,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:17,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147947449] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:17,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:17,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:17,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336059961] [2021-06-05 06:45:17,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:17,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:17,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:17,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:17,546 INFO L87 Difference]: Start difference. First operand 15633 states and 60896 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:17,867 INFO L93 Difference]: Finished difference Result 24061 states and 92296 transitions. [2021-06-05 06:45:17,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:45:17,867 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:17,925 INFO L225 Difference]: With dead ends: 24061 [2021-06-05 06:45:17,925 INFO L226 Difference]: Without dead ends: 24014 [2021-06-05 06:45:17,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:45:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24014 states. [2021-06-05 06:45:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24014 to 20722. [2021-06-05 06:45:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20722 states, 20721 states have (on average 3.9071473384489166) internal successors, (80960), 20721 states have internal predecessors, (80960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20722 states to 20722 states and 80960 transitions. [2021-06-05 06:45:18,379 INFO L78 Accepts]: Start accepts. Automaton has 20722 states and 80960 transitions. Word has length 28 [2021-06-05 06:45:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:18,379 INFO L482 AbstractCegarLoop]: Abstraction has 20722 states and 80960 transitions. [2021-06-05 06:45:18,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 20722 states and 80960 transitions. [2021-06-05 06:45:18,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:18,409 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:18,409 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:18,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4087,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:18,610 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:18,610 INFO L82 PathProgramCache]: Analyzing trace with hash 242691175, now seen corresponding path program 115 times [2021-06-05 06:45:18,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:18,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326351224] [2021-06-05 06:45:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:18,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:18,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326351224] [2021-06-05 06:45:18,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326351224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:18,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275939615] [2021-06-05 06:45:18,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 06:45:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:18,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:18,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:18,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275939615] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:18,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:18,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:45:18,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134026105] [2021-06-05 06:45:18,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:45:18,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:18,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:45:18,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:45:18,722 INFO L87 Difference]: Start difference. First operand 20722 states and 80960 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:18,978 INFO L93 Difference]: Finished difference Result 23493 states and 89383 transitions. [2021-06-05 06:45:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:45:18,978 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:19,030 INFO L225 Difference]: With dead ends: 23493 [2021-06-05 06:45:19,030 INFO L226 Difference]: Without dead ends: 23493 [2021-06-05 06:45:19,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:45:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2021-06-05 06:45:19,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 20225. [2021-06-05 06:45:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20225 states, 20224 states have (on average 3.895767405063291) internal successors, (78788), 20224 states have internal predecessors, (78788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20225 states to 20225 states and 78788 transitions. [2021-06-05 06:45:19,412 INFO L78 Accepts]: Start accepts. Automaton has 20225 states and 78788 transitions. Word has length 28 [2021-06-05 06:45:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:19,412 INFO L482 AbstractCegarLoop]: Abstraction has 20225 states and 78788 transitions. [2021-06-05 06:45:19,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 20225 states and 78788 transitions. [2021-06-05 06:45:19,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:19,443 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:19,443 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:19,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4088 [2021-06-05 06:45:19,644 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:19,644 INFO L82 PathProgramCache]: Analyzing trace with hash -708990263, now seen corresponding path program 116 times [2021-06-05 06:45:19,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:19,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681476422] [2021-06-05 06:45:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:19,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:19,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681476422] [2021-06-05 06:45:19,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681476422] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:19,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73874218] [2021-06-05 06:45:19,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:19,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:19,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:19,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:19,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:19,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73874218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:19,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:19,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-05 06:45:19,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773139054] [2021-06-05 06:45:19,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:45:19,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:19,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:45:19,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:45:19,819 INFO L87 Difference]: Start difference. First operand 20225 states and 78788 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:20,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:20,809 INFO L93 Difference]: Finished difference Result 32091 states and 118994 transitions. [2021-06-05 06:45:20,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:45:20,815 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:20,894 INFO L225 Difference]: With dead ends: 32091 [2021-06-05 06:45:20,894 INFO L226 Difference]: Without dead ends: 32091 [2021-06-05 06:45:20,894 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 487.5ms TimeCoverageRelationStatistics Valid=720, Invalid=2472, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:45:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32091 states. [2021-06-05 06:45:21,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32091 to 20291. [2021-06-05 06:45:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20291 states, 20290 states have (on average 3.8938393297190736) internal successors, (79006), 20290 states have internal predecessors, (79006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:21,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20291 states to 20291 states and 79006 transitions. [2021-06-05 06:45:21,404 INFO L78 Accepts]: Start accepts. Automaton has 20291 states and 79006 transitions. Word has length 28 [2021-06-05 06:45:21,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:21,404 INFO L482 AbstractCegarLoop]: Abstraction has 20291 states and 79006 transitions. [2021-06-05 06:45:21,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:21,405 INFO L276 IsEmpty]: Start isEmpty. Operand 20291 states and 79006 transitions. [2021-06-05 06:45:21,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:21,437 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:21,437 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:21,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4089 [2021-06-05 06:45:21,638 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:21,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1685309107, now seen corresponding path program 117 times [2021-06-05 06:45:21,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:21,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872573150] [2021-06-05 06:45:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:21,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:21,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872573150] [2021-06-05 06:45:21,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872573150] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:21,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453442896] [2021-06-05 06:45:21,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:21,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:45:21,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:21,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:21,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:21,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453442896] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:21,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:21,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:45:21,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649233583] [2021-06-05 06:45:21,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:21,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:21,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:21,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:21,799 INFO L87 Difference]: Start difference. First operand 20291 states and 79006 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:23,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:23,251 INFO L93 Difference]: Finished difference Result 40978 states and 150264 transitions. [2021-06-05 06:45:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 06:45:23,252 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:23,354 INFO L225 Difference]: With dead ends: 40978 [2021-06-05 06:45:23,354 INFO L226 Difference]: Without dead ends: 40978 [2021-06-05 06:45:23,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 850.4ms TimeCoverageRelationStatistics Valid=1548, Invalid=6284, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 06:45:23,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40978 states. [2021-06-05 06:45:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40978 to 20294. [2021-06-05 06:45:23,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20294 states, 20293 states have (on average 3.895924703099591) internal successors, (79060), 20293 states have internal predecessors, (79060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20294 states to 20294 states and 79060 transitions. [2021-06-05 06:45:23,960 INFO L78 Accepts]: Start accepts. Automaton has 20294 states and 79060 transitions. Word has length 28 [2021-06-05 06:45:23,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:23,960 INFO L482 AbstractCegarLoop]: Abstraction has 20294 states and 79060 transitions. [2021-06-05 06:45:23,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 20294 states and 79060 transitions. [2021-06-05 06:45:23,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:23,995 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:23,995 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:24,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4090 [2021-06-05 06:45:24,201 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:24,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1118357027, now seen corresponding path program 118 times [2021-06-05 06:45:24,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:24,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551962992] [2021-06-05 06:45:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:24,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:24,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551962992] [2021-06-05 06:45:24,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551962992] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:24,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499351904] [2021-06-05 06:45:24,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:24,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:24,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:24,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:24,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:24,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499351904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:24,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:24,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:45:24,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848132536] [2021-06-05 06:45:24,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:24,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:24,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:24,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:24,457 INFO L87 Difference]: Start difference. First operand 20294 states and 79060 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:25,844 INFO L93 Difference]: Finished difference Result 40582 states and 149545 transitions. [2021-06-05 06:45:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:45:25,845 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:25,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:25,934 INFO L225 Difference]: With dead ends: 40582 [2021-06-05 06:45:25,935 INFO L226 Difference]: Without dead ends: 40582 [2021-06-05 06:45:25,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 931.9ms TimeCoverageRelationStatistics Valid=1515, Invalid=6141, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 06:45:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40582 states. [2021-06-05 06:45:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40582 to 20081. [2021-06-05 06:45:26,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20081 states, 20080 states have (on average 3.888147410358566) internal successors, (78074), 20080 states have internal predecessors, (78074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20081 states to 20081 states and 78074 transitions. [2021-06-05 06:45:26,535 INFO L78 Accepts]: Start accepts. Automaton has 20081 states and 78074 transitions. Word has length 28 [2021-06-05 06:45:26,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:26,535 INFO L482 AbstractCegarLoop]: Abstraction has 20081 states and 78074 transitions. [2021-06-05 06:45:26,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:26,535 INFO L276 IsEmpty]: Start isEmpty. Operand 20081 states and 78074 transitions. [2021-06-05 06:45:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:26,566 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:26,566 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:26,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4091,196 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:26,767 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:26,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:26,767 INFO L82 PathProgramCache]: Analyzing trace with hash -182218355, now seen corresponding path program 119 times [2021-06-05 06:45:26,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:26,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978920166] [2021-06-05 06:45:26,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:26,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:26,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978920166] [2021-06-05 06:45:26,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978920166] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:26,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521839916] [2021-06-05 06:45:26,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:26,817 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:45:26,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:26,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:45:26,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:45:26,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521839916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:26,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:26,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-05 06:45:26,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506106134] [2021-06-05 06:45:26,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:45:26,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:26,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:45:26,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:45:26,871 INFO L87 Difference]: Start difference. First operand 20081 states and 78074 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:27,138 INFO L93 Difference]: Finished difference Result 29766 states and 111237 transitions. [2021-06-05 06:45:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:45:27,139 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:27,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:27,213 INFO L225 Difference]: With dead ends: 29766 [2021-06-05 06:45:27,214 INFO L226 Difference]: Without dead ends: 29749 [2021-06-05 06:45:27,214 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 100.2ms TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:45:27,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29749 states. [2021-06-05 06:45:27,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29749 to 20349. [2021-06-05 06:45:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20349 states, 20348 states have (on average 3.8934047572242974) internal successors, (79223), 20348 states have internal predecessors, (79223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20349 states to 20349 states and 79223 transitions. [2021-06-05 06:45:27,797 INFO L78 Accepts]: Start accepts. Automaton has 20349 states and 79223 transitions. Word has length 28 [2021-06-05 06:45:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:27,797 INFO L482 AbstractCegarLoop]: Abstraction has 20349 states and 79223 transitions. [2021-06-05 06:45:27,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 20349 states and 79223 transitions. [2021-06-05 06:45:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:27,827 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:27,827 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:28,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4092 [2021-06-05 06:45:28,028 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:28,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1325144395, now seen corresponding path program 120 times [2021-06-05 06:45:28,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:28,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993179333] [2021-06-05 06:45:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:28,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:28,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993179333] [2021-06-05 06:45:28,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993179333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:28,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681800258] [2021-06-05 06:45:28,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:28,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:45:28,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:28,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:45:28,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:45:28,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681800258] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:28,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:28,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-05 06:45:28,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860437237] [2021-06-05 06:45:28,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:45:28,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:28,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:45:28,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:45:28,208 INFO L87 Difference]: Start difference. First operand 20349 states and 79223 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:28,472 INFO L93 Difference]: Finished difference Result 31558 states and 116818 transitions. [2021-06-05 06:45:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:45:28,472 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:28,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:28,546 INFO L225 Difference]: With dead ends: 31558 [2021-06-05 06:45:28,546 INFO L226 Difference]: Without dead ends: 31558 [2021-06-05 06:45:28,546 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:45:28,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31558 states. [2021-06-05 06:45:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31558 to 20016. [2021-06-05 06:45:28,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20016 states, 20015 states have (on average 3.8783912065950537) internal successors, (77626), 20015 states have internal predecessors, (77626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20016 states to 20016 states and 77626 transitions. [2021-06-05 06:45:28,992 INFO L78 Accepts]: Start accepts. Automaton has 20016 states and 77626 transitions. Word has length 28 [2021-06-05 06:45:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:28,992 INFO L482 AbstractCegarLoop]: Abstraction has 20016 states and 77626 transitions. [2021-06-05 06:45:28,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 20016 states and 77626 transitions. [2021-06-05 06:45:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:29,025 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:29,025 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:29,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4093 [2021-06-05 06:45:29,245 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:29,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:29,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1623141335, now seen corresponding path program 121 times [2021-06-05 06:45:29,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:29,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903196396] [2021-06-05 06:45:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:29,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:29,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903196396] [2021-06-05 06:45:29,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903196396] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:29,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439302500] [2021-06-05 06:45:29,280 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:29,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:29,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:29,371 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:29,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439302500] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:29,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:29,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:45:29,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683468297] [2021-06-05 06:45:29,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:29,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:29,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:29,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:29,372 INFO L87 Difference]: Start difference. First operand 20016 states and 77626 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:30,149 INFO L93 Difference]: Finished difference Result 29601 states and 110146 transitions. [2021-06-05 06:45:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:45:30,150 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:30,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:30,220 INFO L225 Difference]: With dead ends: 29601 [2021-06-05 06:45:30,220 INFO L226 Difference]: Without dead ends: 29601 [2021-06-05 06:45:30,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 381.9ms TimeCoverageRelationStatistics Valid=589, Invalid=1961, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:45:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29601 states. [2021-06-05 06:45:30,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29601 to 20064. [2021-06-05 06:45:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20064 states, 20063 states have (on average 3.8771868613866323) internal successors, (77788), 20063 states have internal predecessors, (77788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20064 states to 20064 states and 77788 transitions. [2021-06-05 06:45:30,674 INFO L78 Accepts]: Start accepts. Automaton has 20064 states and 77788 transitions. Word has length 28 [2021-06-05 06:45:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:30,674 INFO L482 AbstractCegarLoop]: Abstraction has 20064 states and 77788 transitions. [2021-06-05 06:45:30,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:30,674 INFO L276 IsEmpty]: Start isEmpty. Operand 20064 states and 77788 transitions. [2021-06-05 06:45:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:30,703 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:30,704 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:30,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4094,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:30,904 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:30,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:30,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1886911867, now seen corresponding path program 122 times [2021-06-05 06:45:30,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:30,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207851997] [2021-06-05 06:45:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:30,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:30,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207851997] [2021-06-05 06:45:30,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207851997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:30,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094451532] [2021-06-05 06:45:30,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:30,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:30,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:30,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:30,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:31,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094451532] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:31,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:31,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:45:31,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814877880] [2021-06-05 06:45:31,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:31,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:31,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:31,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:31,149 INFO L87 Difference]: Start difference. First operand 20064 states and 77788 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:32,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:32,196 INFO L93 Difference]: Finished difference Result 31138 states and 114558 transitions. [2021-06-05 06:45:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 06:45:32,196 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:32,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:32,278 INFO L225 Difference]: With dead ends: 31138 [2021-06-05 06:45:32,278 INFO L226 Difference]: Without dead ends: 31138 [2021-06-05 06:45:32,279 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 562.3ms TimeCoverageRelationStatistics Valid=928, Invalid=3494, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:45:32,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31138 states. [2021-06-05 06:45:32,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31138 to 20620. [2021-06-05 06:45:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20620 states, 20619 states have (on average 3.855958096900917) internal successors, (79506), 20619 states have internal predecessors, (79506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20620 states to 20620 states and 79506 transitions. [2021-06-05 06:45:32,851 INFO L78 Accepts]: Start accepts. Automaton has 20620 states and 79506 transitions. Word has length 28 [2021-06-05 06:45:32,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:32,851 INFO L482 AbstractCegarLoop]: Abstraction has 20620 states and 79506 transitions. [2021-06-05 06:45:32,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:32,851 INFO L276 IsEmpty]: Start isEmpty. Operand 20620 states and 79506 transitions. [2021-06-05 06:45:32,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:32,883 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:32,883 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:33,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4095 [2021-06-05 06:45:33,084 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:33,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:33,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1931733009, now seen corresponding path program 123 times [2021-06-05 06:45:33,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:33,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961840693] [2021-06-05 06:45:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:33,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:33,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961840693] [2021-06-05 06:45:33,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961840693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:33,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794032176] [2021-06-05 06:45:33,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:33,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:45:33,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:33,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:33,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:33,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794032176] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:33,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:33,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:45:33,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674690730] [2021-06-05 06:45:33,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:33,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:33,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:33,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:33,214 INFO L87 Difference]: Start difference. First operand 20620 states and 79506 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:34,013 INFO L93 Difference]: Finished difference Result 30264 states and 112255 transitions. [2021-06-05 06:45:34,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:45:34,013 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:34,089 INFO L225 Difference]: With dead ends: 30264 [2021-06-05 06:45:34,090 INFO L226 Difference]: Without dead ends: 30260 [2021-06-05 06:45:34,090 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 435.6ms TimeCoverageRelationStatistics Valid=736, Invalid=2570, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:45:34,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30260 states. [2021-06-05 06:45:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30260 to 20512. [2021-06-05 06:45:34,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20512 states, 20511 states have (on average 3.858612451855102) internal successors, (79144), 20511 states have internal predecessors, (79144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 79144 transitions. [2021-06-05 06:45:34,578 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 79144 transitions. Word has length 28 [2021-06-05 06:45:34,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:34,578 INFO L482 AbstractCegarLoop]: Abstraction has 20512 states and 79144 transitions. [2021-06-05 06:45:34,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:34,578 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 79144 transitions. [2021-06-05 06:45:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:34,608 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:34,608 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:34,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4096,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:34,808 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:34,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:34,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1066349071, now seen corresponding path program 124 times [2021-06-05 06:45:34,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:34,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800191654] [2021-06-05 06:45:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:34,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:34,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800191654] [2021-06-05 06:45:34,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800191654] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:34,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163141764] [2021-06-05 06:45:34,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:34,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:34,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:34,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:45:34,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 06:45:34,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163141764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:34,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:34,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-05 06:45:34,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862747624] [2021-06-05 06:45:34,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:45:34,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:34,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:45:34,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:45:34,914 INFO L87 Difference]: Start difference. First operand 20512 states and 79144 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:35,131 INFO L93 Difference]: Finished difference Result 25599 states and 95352 transitions. [2021-06-05 06:45:35,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:45:35,132 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:35,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:35,186 INFO L225 Difference]: With dead ends: 25599 [2021-06-05 06:45:35,186 INFO L226 Difference]: Without dead ends: 25599 [2021-06-05 06:45:35,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:45:35,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25599 states. [2021-06-05 06:45:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25599 to 20822. [2021-06-05 06:45:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20822 states, 20821 states have (on average 3.8498150905335957) internal successors, (80157), 20821 states have internal predecessors, (80157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20822 states to 20822 states and 80157 transitions. [2021-06-05 06:45:35,658 INFO L78 Accepts]: Start accepts. Automaton has 20822 states and 80157 transitions. Word has length 28 [2021-06-05 06:45:35,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:35,658 INFO L482 AbstractCegarLoop]: Abstraction has 20822 states and 80157 transitions. [2021-06-05 06:45:35,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:35,659 INFO L276 IsEmpty]: Start isEmpty. Operand 20822 states and 80157 transitions. [2021-06-05 06:45:35,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:35,690 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:35,690 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:35,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4097 [2021-06-05 06:45:35,899 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:35,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:35,899 INFO L82 PathProgramCache]: Analyzing trace with hash -136149327, now seen corresponding path program 125 times [2021-06-05 06:45:35,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:35,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588497075] [2021-06-05 06:45:35,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:35,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:35,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588497075] [2021-06-05 06:45:35,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588497075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:35,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542880472] [2021-06-05 06:45:35,944 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:35,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:45:35,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:35,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:35,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:45:36,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542880472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:36,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:36,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:45:36,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135930565] [2021-06-05 06:45:36,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:36,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:36,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:36,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:36,028 INFO L87 Difference]: Start difference. First operand 20822 states and 80157 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:36,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:36,803 INFO L93 Difference]: Finished difference Result 31377 states and 115045 transitions. [2021-06-05 06:45:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:45:36,804 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:36,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:36,880 INFO L225 Difference]: With dead ends: 31377 [2021-06-05 06:45:36,880 INFO L226 Difference]: Without dead ends: 31377 [2021-06-05 06:45:36,881 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 414.6ms TimeCoverageRelationStatistics Valid=684, Invalid=2396, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 06:45:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31377 states. [2021-06-05 06:45:37,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31377 to 22482. [2021-06-05 06:45:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22482 states, 22481 states have (on average 3.8615719941283753) internal successors, (86812), 22481 states have internal predecessors, (86812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22482 states to 22482 states and 86812 transitions. [2021-06-05 06:45:37,420 INFO L78 Accepts]: Start accepts. Automaton has 22482 states and 86812 transitions. Word has length 28 [2021-06-05 06:45:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:37,420 INFO L482 AbstractCegarLoop]: Abstraction has 22482 states and 86812 transitions. [2021-06-05 06:45:37,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:37,421 INFO L276 IsEmpty]: Start isEmpty. Operand 22482 states and 86812 transitions. [2021-06-05 06:45:37,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:37,456 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:37,456 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:37,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4098,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:37,656 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:37,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:37,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1975921655, now seen corresponding path program 126 times [2021-06-05 06:45:37,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:37,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679221418] [2021-06-05 06:45:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:37,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:37,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679221418] [2021-06-05 06:45:37,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679221418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:37,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271379767] [2021-06-05 06:45:37,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:37,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:45:37,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:37,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:37,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:45:37,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271379767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:37,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:37,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:45:37,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513367035] [2021-06-05 06:45:37,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:37,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:37,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:37,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:37,777 INFO L87 Difference]: Start difference. First operand 22482 states and 86812 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:38,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:38,443 INFO L93 Difference]: Finished difference Result 29625 states and 110530 transitions. [2021-06-05 06:45:38,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:45:38,444 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:38,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:38,511 INFO L225 Difference]: With dead ends: 29625 [2021-06-05 06:45:38,511 INFO L226 Difference]: Without dead ends: 29613 [2021-06-05 06:45:38,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 334.1ms TimeCoverageRelationStatistics Valid=503, Invalid=1849, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:45:38,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29613 states. [2021-06-05 06:45:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29613 to 22654. [2021-06-05 06:45:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22654 states, 22653 states have (on average 3.8557365470357126) internal successors, (87344), 22653 states have internal predecessors, (87344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22654 states to 22654 states and 87344 transitions. [2021-06-05 06:45:39,010 INFO L78 Accepts]: Start accepts. Automaton has 22654 states and 87344 transitions. Word has length 28 [2021-06-05 06:45:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:39,010 INFO L482 AbstractCegarLoop]: Abstraction has 22654 states and 87344 transitions. [2021-06-05 06:45:39,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 22654 states and 87344 transitions. [2021-06-05 06:45:39,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:39,046 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:39,046 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:39,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4099 [2021-06-05 06:45:39,247 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:39,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:39,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1688262325, now seen corresponding path program 127 times [2021-06-05 06:45:39,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:39,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674662550] [2021-06-05 06:45:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:39,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:39,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674662550] [2021-06-05 06:45:39,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674662550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:39,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209513601] [2021-06-05 06:45:39,401 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:39,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:45:39,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:39,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209513601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:39,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:39,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:45:39,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895901687] [2021-06-05 06:45:39,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:45:39,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:39,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:45:39,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:45:39,491 INFO L87 Difference]: Start difference. First operand 22654 states and 87344 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:39,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:39,743 INFO L93 Difference]: Finished difference Result 26104 states and 98956 transitions. [2021-06-05 06:45:39,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 06:45:39,749 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:39,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:39,810 INFO L225 Difference]: With dead ends: 26104 [2021-06-05 06:45:39,810 INFO L226 Difference]: Without dead ends: 26104 [2021-06-05 06:45:39,810 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:45:39,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26104 states. [2021-06-05 06:45:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26104 to 23491. [2021-06-05 06:45:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23491 states, 23490 states have (on average 3.8498084291187737) internal successors, (90432), 23490 states have internal predecessors, (90432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23491 states to 23491 states and 90432 transitions. [2021-06-05 06:45:40,260 INFO L78 Accepts]: Start accepts. Automaton has 23491 states and 90432 transitions. Word has length 28 [2021-06-05 06:45:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:40,260 INFO L482 AbstractCegarLoop]: Abstraction has 23491 states and 90432 transitions. [2021-06-05 06:45:40,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 23491 states and 90432 transitions. [2021-06-05 06:45:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:40,298 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:40,298 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:40,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4100,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:40,498 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:40,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:40,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2131923893, now seen corresponding path program 128 times [2021-06-05 06:45:40,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:40,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094233654] [2021-06-05 06:45:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:40,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:40,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094233654] [2021-06-05 06:45:40,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094233654] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:40,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897012331] [2021-06-05 06:45:40,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:40,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:40,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:40,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:40,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:40,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897012331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:40,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:40,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:45:40,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537026856] [2021-06-05 06:45:40,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:40,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:40,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:40,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:40,628 INFO L87 Difference]: Start difference. First operand 23491 states and 90432 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:41,371 INFO L93 Difference]: Finished difference Result 31312 states and 115741 transitions. [2021-06-05 06:45:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:45:41,371 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:41,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:41,446 INFO L225 Difference]: With dead ends: 31312 [2021-06-05 06:45:41,446 INFO L226 Difference]: Without dead ends: 31312 [2021-06-05 06:45:41,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 397.8ms TimeCoverageRelationStatistics Valid=627, Invalid=2235, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:45:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31312 states. [2021-06-05 06:45:41,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31312 to 24677. [2021-06-05 06:45:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24677 states, 24676 states have (on average 3.8184875992867564) internal successors, (94225), 24676 states have internal predecessors, (94225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24677 states to 24677 states and 94225 transitions. [2021-06-05 06:45:41,989 INFO L78 Accepts]: Start accepts. Automaton has 24677 states and 94225 transitions. Word has length 28 [2021-06-05 06:45:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:41,989 INFO L482 AbstractCegarLoop]: Abstraction has 24677 states and 94225 transitions. [2021-06-05 06:45:41,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 24677 states and 94225 transitions. [2021-06-05 06:45:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:42,024 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:42,024 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:42,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4101 [2021-06-05 06:45:42,225 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:42,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:42,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1422950451, now seen corresponding path program 129 times [2021-06-05 06:45:42,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:42,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55744541] [2021-06-05 06:45:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:42,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:42,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55744541] [2021-06-05 06:45:42,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55744541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:42,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106099987] [2021-06-05 06:45:42,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:42,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:45:42,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:42,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:42,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:42,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106099987] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:42,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:42,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:42,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143324875] [2021-06-05 06:45:42,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:42,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:42,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:42,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:42,340 INFO L87 Difference]: Start difference. First operand 24677 states and 94225 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:42,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:42,908 INFO L93 Difference]: Finished difference Result 30413 states and 113358 transitions. [2021-06-05 06:45:42,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:45:42,909 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:42,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:42,979 INFO L225 Difference]: With dead ends: 30413 [2021-06-05 06:45:42,979 INFO L226 Difference]: Without dead ends: 30405 [2021-06-05 06:45:42,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 291.1ms TimeCoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:45:43,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30405 states. [2021-06-05 06:45:43,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30405 to 24499. [2021-06-05 06:45:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24499 states, 24498 states have (on average 3.824557106702588) internal successors, (93694), 24498 states have internal predecessors, (93694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24499 states to 24499 states and 93694 transitions. [2021-06-05 06:45:43,589 INFO L78 Accepts]: Start accepts. Automaton has 24499 states and 93694 transitions. Word has length 28 [2021-06-05 06:45:43,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:43,589 INFO L482 AbstractCegarLoop]: Abstraction has 24499 states and 93694 transitions. [2021-06-05 06:45:43,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:43,589 INFO L276 IsEmpty]: Start isEmpty. Operand 24499 states and 93694 transitions. [2021-06-05 06:45:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:43,625 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:43,625 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:43,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4102,207 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:43,826 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:43,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:43,826 INFO L82 PathProgramCache]: Analyzing trace with hash 27046477, now seen corresponding path program 130 times [2021-06-05 06:45:43,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:43,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484339595] [2021-06-05 06:45:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:43,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:43,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484339595] [2021-06-05 06:45:43,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484339595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:43,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292700230] [2021-06-05 06:45:43,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:43,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:43,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:43,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:43,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:43,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292700230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:43,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:43,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:43,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103979071] [2021-06-05 06:45:43,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:43,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:43,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:43,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:43,944 INFO L87 Difference]: Start difference. First operand 24499 states and 93694 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:44,650 INFO L93 Difference]: Finished difference Result 32257 states and 118986 transitions. [2021-06-05 06:45:44,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:45:44,650 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:44,724 INFO L225 Difference]: With dead ends: 32257 [2021-06-05 06:45:44,724 INFO L226 Difference]: Without dead ends: 32257 [2021-06-05 06:45:44,725 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 372.4ms TimeCoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:45:44,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32257 states. [2021-06-05 06:45:45,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32257 to 25533. [2021-06-05 06:45:45,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25533 states, 25532 states have (on average 3.8001331662227793) internal successors, (97025), 25532 states have internal predecessors, (97025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25533 states to 25533 states and 97025 transitions. [2021-06-05 06:45:45,308 INFO L78 Accepts]: Start accepts. Automaton has 25533 states and 97025 transitions. Word has length 28 [2021-06-05 06:45:45,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:45,308 INFO L482 AbstractCegarLoop]: Abstraction has 25533 states and 97025 transitions. [2021-06-05 06:45:45,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:45,308 INFO L276 IsEmpty]: Start isEmpty. Operand 25533 states and 97025 transitions. [2021-06-05 06:45:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:45,345 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:45,345 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:45,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4103,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:45,546 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:45,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:45,546 INFO L82 PathProgramCache]: Analyzing trace with hash 415101939, now seen corresponding path program 131 times [2021-06-05 06:45:45,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:45,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415951062] [2021-06-05 06:45:45,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:45,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:45,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415951062] [2021-06-05 06:45:45,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415951062] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:45,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593826777] [2021-06-05 06:45:45,577 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:45,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:45:45,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:45,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:45,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:45,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593826777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:45,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:45,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 06:45:45,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607480703] [2021-06-05 06:45:45,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:45:45,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:45,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:45:45,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:45:45,649 INFO L87 Difference]: Start difference. First operand 25533 states and 97025 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:46,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:46,013 INFO L93 Difference]: Finished difference Result 32571 states and 122068 transitions. [2021-06-05 06:45:46,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:45:46,013 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:46,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:46,086 INFO L225 Difference]: With dead ends: 32571 [2021-06-05 06:45:46,086 INFO L226 Difference]: Without dead ends: 32571 [2021-06-05 06:45:46,086 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:45:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32571 states. [2021-06-05 06:45:46,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32571 to 29359. [2021-06-05 06:45:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29359 states, 29358 states have (on average 3.814599087131276) internal successors, (111989), 29358 states have internal predecessors, (111989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29359 states to 29359 states and 111989 transitions. [2021-06-05 06:45:46,873 INFO L78 Accepts]: Start accepts. Automaton has 29359 states and 111989 transitions. Word has length 28 [2021-06-05 06:45:46,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:46,873 INFO L482 AbstractCegarLoop]: Abstraction has 29359 states and 111989 transitions. [2021-06-05 06:45:46,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 29359 states and 111989 transitions. [2021-06-05 06:45:46,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:46,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:46,920 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:47,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4104,209 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:47,120 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:47,121 INFO L82 PathProgramCache]: Analyzing trace with hash -17774665, now seen corresponding path program 132 times [2021-06-05 06:45:47,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:47,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377105394] [2021-06-05 06:45:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:47,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:47,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377105394] [2021-06-05 06:45:47,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377105394] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:47,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167714240] [2021-06-05 06:45:47,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:47,174 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:45:47,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:47,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:47,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:47,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167714240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:47,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:47,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:47,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909713303] [2021-06-05 06:45:47,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:47,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:47,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:47,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:47,228 INFO L87 Difference]: Start difference. First operand 29359 states and 111989 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:47,815 INFO L93 Difference]: Finished difference Result 35770 states and 133277 transitions. [2021-06-05 06:45:47,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:45:47,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:47,901 INFO L225 Difference]: With dead ends: 35770 [2021-06-05 06:45:47,901 INFO L226 Difference]: Without dead ends: 35762 [2021-06-05 06:45:47,901 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 264.3ms TimeCoverageRelationStatistics Valid=354, Invalid=1286, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:45:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35762 states. [2021-06-05 06:45:48,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35762 to 29325. [2021-06-05 06:45:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29325 states, 29324 states have (on average 3.8150320556540716) internal successors, (111872), 29324 states have internal predecessors, (111872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:48,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29325 states to 29325 states and 111872 transitions. [2021-06-05 06:45:48,575 INFO L78 Accepts]: Start accepts. Automaton has 29325 states and 111872 transitions. Word has length 28 [2021-06-05 06:45:48,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:48,575 INFO L482 AbstractCegarLoop]: Abstraction has 29325 states and 111872 transitions. [2021-06-05 06:45:48,575 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:48,575 INFO L276 IsEmpty]: Start isEmpty. Operand 29325 states and 111872 transitions. [2021-06-05 06:45:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:48,619 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:48,619 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:48,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4105,210 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:48,819 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:48,819 INFO L82 PathProgramCache]: Analyzing trace with hash -913595481, now seen corresponding path program 133 times [2021-06-05 06:45:48,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:48,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983463063] [2021-06-05 06:45:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:48,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:48,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983463063] [2021-06-05 06:45:48,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983463063] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:48,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519953958] [2021-06-05 06:45:48,850 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:48,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:48,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:48,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519953958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:48,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:48,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 06:45:48,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684651938] [2021-06-05 06:45:48,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:45:48,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:48,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:45:48,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:45:48,924 INFO L87 Difference]: Start difference. First operand 29325 states and 111872 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:49,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:49,334 INFO L93 Difference]: Finished difference Result 32332 states and 121875 transitions. [2021-06-05 06:45:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:45:49,334 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:49,402 INFO L225 Difference]: With dead ends: 32332 [2021-06-05 06:45:49,402 INFO L226 Difference]: Without dead ends: 32332 [2021-06-05 06:45:49,403 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 177.3ms TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:45:49,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32332 states. [2021-06-05 06:45:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32332 to 29928. [2021-06-05 06:45:49,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29928 states, 29927 states have (on average 3.812978247067865) internal successors, (114111), 29927 states have internal predecessors, (114111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29928 states to 29928 states and 114111 transitions. [2021-06-05 06:45:49,980 INFO L78 Accepts]: Start accepts. Automaton has 29928 states and 114111 transitions. Word has length 28 [2021-06-05 06:45:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:49,980 INFO L482 AbstractCegarLoop]: Abstraction has 29928 states and 114111 transitions. [2021-06-05 06:45:49,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 29928 states and 114111 transitions. [2021-06-05 06:45:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:50,026 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:50,026 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:50,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4106,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:50,227 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:50,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:50,227 INFO L82 PathProgramCache]: Analyzing trace with hash 579561993, now seen corresponding path program 134 times [2021-06-05 06:45:50,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:50,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45888796] [2021-06-05 06:45:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:50,391 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-05 06:45:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:50,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:50,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45888796] [2021-06-05 06:45:50,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45888796] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:50,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305930279] [2021-06-05 06:45:50,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:50,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:50,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:50,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:50,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:45:50,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305930279] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:50,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:50,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:50,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230817681] [2021-06-05 06:45:50,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:50,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:50,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:50,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:50,504 INFO L87 Difference]: Start difference. First operand 29928 states and 114111 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:51,139 INFO L93 Difference]: Finished difference Result 36766 states and 136935 transitions. [2021-06-05 06:45:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:45:51,139 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:51,223 INFO L225 Difference]: With dead ends: 36766 [2021-06-05 06:45:51,224 INFO L226 Difference]: Without dead ends: 36742 [2021-06-05 06:45:51,224 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 438.1ms TimeCoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:45:51,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36742 states. [2021-06-05 06:45:51,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36742 to 30100. [2021-06-05 06:45:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30100 states, 30099 states have (on average 3.8089305292534634) internal successors, (114645), 30099 states have internal predecessors, (114645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30100 states to 30100 states and 114645 transitions. [2021-06-05 06:45:51,951 INFO L78 Accepts]: Start accepts. Automaton has 30100 states and 114645 transitions. Word has length 28 [2021-06-05 06:45:51,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:51,951 INFO L482 AbstractCegarLoop]: Abstraction has 30100 states and 114645 transitions. [2021-06-05 06:45:51,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:51,951 INFO L276 IsEmpty]: Start isEmpty. Operand 30100 states and 114645 transitions. [2021-06-05 06:45:52,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:52,002 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:52,002 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:52,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4107,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:52,202 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:52,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1271447701, now seen corresponding path program 135 times [2021-06-05 06:45:52,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:52,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93208675] [2021-06-05 06:45:52,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:52,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:52,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93208675] [2021-06-05 06:45:52,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93208675] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:52,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047447599] [2021-06-05 06:45:52,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:52,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:45:52,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:52,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:52,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:52,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047447599] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:52,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:52,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-06-05 06:45:52,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968155360] [2021-06-05 06:45:52,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:52,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:52,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:52,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:52,314 INFO L87 Difference]: Start difference. First operand 30100 states and 114645 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:52,854 INFO L93 Difference]: Finished difference Result 32808 states and 123611 transitions. [2021-06-05 06:45:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:45:52,855 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:52,924 INFO L225 Difference]: With dead ends: 32808 [2021-06-05 06:45:52,924 INFO L226 Difference]: Without dead ends: 32808 [2021-06-05 06:45:52,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 286.9ms TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:45:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32808 states. [2021-06-05 06:45:53,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32808 to 30021. [2021-06-05 06:45:53,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30021 states, 30020 states have (on average 3.8105929380413057) internal successors, (114394), 30020 states have internal predecessors, (114394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30021 states to 30021 states and 114394 transitions. [2021-06-05 06:45:53,528 INFO L78 Accepts]: Start accepts. Automaton has 30021 states and 114394 transitions. Word has length 28 [2021-06-05 06:45:53,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:53,528 INFO L482 AbstractCegarLoop]: Abstraction has 30021 states and 114394 transitions. [2021-06-05 06:45:53,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 30021 states and 114394 transitions. [2021-06-05 06:45:53,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:53,576 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:53,576 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:53,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4108,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:53,777 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:53,777 INFO L82 PathProgramCache]: Analyzing trace with hash -412931571, now seen corresponding path program 136 times [2021-06-05 06:45:53,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:53,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319038388] [2021-06-05 06:45:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:53,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:53,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319038388] [2021-06-05 06:45:53,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319038388] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:53,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297289647] [2021-06-05 06:45:53,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:53,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:53,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:53,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:53,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:53,891 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:53,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297289647] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:53,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:53,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:45:53,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854430148] [2021-06-05 06:45:53,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:53,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:53,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:53,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:53,892 INFO L87 Difference]: Start difference. First operand 30021 states and 114394 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:54,518 INFO L93 Difference]: Finished difference Result 36684 states and 136681 transitions. [2021-06-05 06:45:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:45:54,519 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:54,603 INFO L225 Difference]: With dead ends: 36684 [2021-06-05 06:45:54,603 INFO L226 Difference]: Without dead ends: 36644 [2021-06-05 06:45:54,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 303.9ms TimeCoverageRelationStatistics Valid=425, Invalid=1645, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:45:54,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36644 states. [2021-06-05 06:45:55,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36644 to 30177. [2021-06-05 06:45:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30177 states, 30176 states have (on average 3.806733828207847) internal successors, (114872), 30176 states have internal predecessors, (114872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:55,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30177 states to 30177 states and 114872 transitions. [2021-06-05 06:45:55,272 INFO L78 Accepts]: Start accepts. Automaton has 30177 states and 114872 transitions. Word has length 28 [2021-06-05 06:45:55,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:55,272 INFO L482 AbstractCegarLoop]: Abstraction has 30177 states and 114872 transitions. [2021-06-05 06:45:55,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:55,273 INFO L276 IsEmpty]: Start isEmpty. Operand 30177 states and 114872 transitions. [2021-06-05 06:45:55,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:55,326 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:55,326 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:55,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4109 [2021-06-05 06:45:55,526 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:55,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:55,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1625942477, now seen corresponding path program 137 times [2021-06-05 06:45:55,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:55,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372369269] [2021-06-05 06:45:55,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:55,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:55,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372369269] [2021-06-05 06:45:55,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372369269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:55,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782140097] [2021-06-05 06:45:55,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:55,584 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:45:55,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:55,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:55,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:55,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:55,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782140097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:55,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:55,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:45:55,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743064378] [2021-06-05 06:45:55,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:55,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:55,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:55,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:55,679 INFO L87 Difference]: Start difference. First operand 30177 states and 114872 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:56,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:56,904 INFO L93 Difference]: Finished difference Result 68717 states and 253109 transitions. [2021-06-05 06:45:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:45:56,905 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:45:56,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:57,078 INFO L225 Difference]: With dead ends: 68717 [2021-06-05 06:45:57,078 INFO L226 Difference]: Without dead ends: 68717 [2021-06-05 06:45:57,078 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 623.1ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:45:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68717 states. [2021-06-05 06:45:58,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68717 to 37968. [2021-06-05 06:45:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37968 states, 37967 states have (on average 3.8875075723654753) internal successors, (147597), 37967 states have internal predecessors, (147597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37968 states to 37968 states and 147597 transitions. [2021-06-05 06:45:58,287 INFO L78 Accepts]: Start accepts. Automaton has 37968 states and 147597 transitions. Word has length 28 [2021-06-05 06:45:58,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:58,287 INFO L482 AbstractCegarLoop]: Abstraction has 37968 states and 147597 transitions. [2021-06-05 06:45:58,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand 37968 states and 147597 transitions. [2021-06-05 06:45:58,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:58,346 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:58,346 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:58,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4110,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:58,546 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:58,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:58,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2102072739, now seen corresponding path program 138 times [2021-06-05 06:45:58,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:58,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151708817] [2021-06-05 06:45:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:58,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:58,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151708817] [2021-06-05 06:45:58,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151708817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:58,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123340258] [2021-06-05 06:45:58,756 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:58,778 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:45:58,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:58,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:58,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:58,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123340258] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:58,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:58,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:45:58,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850733384] [2021-06-05 06:45:58,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:58,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:58,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:58,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:58,874 INFO L87 Difference]: Start difference. First operand 37968 states and 147597 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:00,053 INFO L93 Difference]: Finished difference Result 68090 states and 251448 transitions. [2021-06-05 06:46:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:46:00,053 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:00,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:00,225 INFO L225 Difference]: With dead ends: 68090 [2021-06-05 06:46:00,225 INFO L226 Difference]: Without dead ends: 68090 [2021-06-05 06:46:00,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 805.1ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:46:00,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68090 states. [2021-06-05 06:46:01,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68090 to 37965. [2021-06-05 06:46:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37965 states, 37964 states have (on average 3.8874460014750816) internal successors, (147583), 37964 states have internal predecessors, (147583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37965 states to 37965 states and 147583 transitions. [2021-06-05 06:46:01,470 INFO L78 Accepts]: Start accepts. Automaton has 37965 states and 147583 transitions. Word has length 28 [2021-06-05 06:46:01,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:01,470 INFO L482 AbstractCegarLoop]: Abstraction has 37965 states and 147583 transitions. [2021-06-05 06:46:01,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:01,470 INFO L276 IsEmpty]: Start isEmpty. Operand 37965 states and 147583 transitions. [2021-06-05 06:46:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:01,528 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:01,528 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:01,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4111 [2021-06-05 06:46:01,728 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:01,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:01,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1020548699, now seen corresponding path program 139 times [2021-06-05 06:46:01,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:01,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605976166] [2021-06-05 06:46:01,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:01,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:01,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605976166] [2021-06-05 06:46:01,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605976166] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:01,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242121674] [2021-06-05 06:46:01,759 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:01,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:01,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:01,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242121674] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:01,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:01,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:46:01,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593437074] [2021-06-05 06:46:01,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:46:01,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:01,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:46:01,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:46:01,866 INFO L87 Difference]: Start difference. First operand 37965 states and 147583 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:03,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:03,213 INFO L93 Difference]: Finished difference Result 63470 states and 235834 transitions. [2021-06-05 06:46:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:46:03,213 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:03,393 INFO L225 Difference]: With dead ends: 63470 [2021-06-05 06:46:03,393 INFO L226 Difference]: Without dead ends: 63470 [2021-06-05 06:46:03,393 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 746.1ms TimeCoverageRelationStatistics Valid=944, Invalid=3216, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:46:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63470 states. [2021-06-05 06:46:04,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63470 to 37989. [2021-06-05 06:46:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37989 states, 37988 states have (on average 3.8877277034853113) internal successors, (147687), 37988 states have internal predecessors, (147687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37989 states to 37989 states and 147687 transitions. [2021-06-05 06:46:04,750 INFO L78 Accepts]: Start accepts. Automaton has 37989 states and 147687 transitions. Word has length 28 [2021-06-05 06:46:04,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:04,751 INFO L482 AbstractCegarLoop]: Abstraction has 37989 states and 147687 transitions. [2021-06-05 06:46:04,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:04,751 INFO L276 IsEmpty]: Start isEmpty. Operand 37989 states and 147687 transitions. [2021-06-05 06:46:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:04,814 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:04,814 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:05,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4112 [2021-06-05 06:46:05,015 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:05,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:05,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1101924787, now seen corresponding path program 140 times [2021-06-05 06:46:05,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:05,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561088577] [2021-06-05 06:46:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:05,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:05,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561088577] [2021-06-05 06:46:05,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561088577] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:05,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405651175] [2021-06-05 06:46:05,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:05,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:46:05,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:05,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:05,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:05,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405651175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:05,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:05,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:46:05,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646398601] [2021-06-05 06:46:05,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:46:05,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:05,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:46:05,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:46:05,146 INFO L87 Difference]: Start difference. First operand 37989 states and 147687 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:06,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:06,312 INFO L93 Difference]: Finished difference Result 62601 states and 233589 transitions. [2021-06-05 06:46:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:46:06,312 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:06,483 INFO L225 Difference]: With dead ends: 62601 [2021-06-05 06:46:06,483 INFO L226 Difference]: Without dead ends: 62593 [2021-06-05 06:46:06,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 467.0ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:46:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62593 states. [2021-06-05 06:46:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62593 to 37989. [2021-06-05 06:46:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37989 states, 37988 states have (on average 3.8875697588712224) internal successors, (147681), 37988 states have internal predecessors, (147681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:07,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37989 states to 37989 states and 147681 transitions. [2021-06-05 06:46:07,871 INFO L78 Accepts]: Start accepts. Automaton has 37989 states and 147681 transitions. Word has length 28 [2021-06-05 06:46:07,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:07,871 INFO L482 AbstractCegarLoop]: Abstraction has 37989 states and 147681 transitions. [2021-06-05 06:46:07,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 37989 states and 147681 transitions. [2021-06-05 06:46:07,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:07,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:07,933 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:08,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4113,218 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:08,133 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:08,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:08,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2032582003, now seen corresponding path program 141 times [2021-06-05 06:46:08,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:08,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228262338] [2021-06-05 06:46:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:08,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:08,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228262338] [2021-06-05 06:46:08,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228262338] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:08,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644739798] [2021-06-05 06:46:08,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:08,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:46:08,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:08,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:08,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:08,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644739798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:08,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:08,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:46:08,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592064552] [2021-06-05 06:46:08,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:08,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:08,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:08,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:08,278 INFO L87 Difference]: Start difference. First operand 37989 states and 147681 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:09,605 INFO L93 Difference]: Finished difference Result 62283 states and 232726 transitions. [2021-06-05 06:46:09,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:46:09,605 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:09,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:09,787 INFO L225 Difference]: With dead ends: 62283 [2021-06-05 06:46:09,788 INFO L226 Difference]: Without dead ends: 62283 [2021-06-05 06:46:09,788 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 531.9ms TimeCoverageRelationStatistics Valid=872, Invalid=3034, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:46:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62283 states. [2021-06-05 06:46:10,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62283 to 37997. [2021-06-05 06:46:10,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37997 states, 37996 states have (on average 3.8876460680071587) internal successors, (147715), 37996 states have internal predecessors, (147715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37997 states to 37997 states and 147715 transitions. [2021-06-05 06:46:11,045 INFO L78 Accepts]: Start accepts. Automaton has 37997 states and 147715 transitions. Word has length 28 [2021-06-05 06:46:11,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:11,045 INFO L482 AbstractCegarLoop]: Abstraction has 37997 states and 147715 transitions. [2021-06-05 06:46:11,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:11,045 INFO L276 IsEmpty]: Start isEmpty. Operand 37997 states and 147715 transitions. [2021-06-05 06:46:11,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:11,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:11,103 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:11,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4114 [2021-06-05 06:46:11,303 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:11,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:11,303 INFO L82 PathProgramCache]: Analyzing trace with hash -619346139, now seen corresponding path program 142 times [2021-06-05 06:46:11,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:11,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050127673] [2021-06-05 06:46:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:11,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:11,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050127673] [2021-06-05 06:46:11,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050127673] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:11,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203052908] [2021-06-05 06:46:11,333 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:11,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:46:11,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:11,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:11,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:11,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203052908] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:11,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:11,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:46:11,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983079156] [2021-06-05 06:46:11,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:11,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:11,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:11,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:11,443 INFO L87 Difference]: Start difference. First operand 37997 states and 147715 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:12,706 INFO L93 Difference]: Finished difference Result 62072 states and 232200 transitions. [2021-06-05 06:46:12,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:46:12,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:12,876 INFO L225 Difference]: With dead ends: 62072 [2021-06-05 06:46:12,876 INFO L226 Difference]: Without dead ends: 62064 [2021-06-05 06:46:12,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 608.3ms TimeCoverageRelationStatistics Valid=767, Invalid=2539, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:46:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62064 states. [2021-06-05 06:46:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62064 to 37997. [2021-06-05 06:46:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37997 states, 37996 states have (on average 3.887593430887462) internal successors, (147713), 37996 states have internal predecessors, (147713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:14,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37997 states to 37997 states and 147713 transitions. [2021-06-05 06:46:14,179 INFO L78 Accepts]: Start accepts. Automaton has 37997 states and 147713 transitions. Word has length 28 [2021-06-05 06:46:14,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:14,179 INFO L482 AbstractCegarLoop]: Abstraction has 37997 states and 147713 transitions. [2021-06-05 06:46:14,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:14,179 INFO L276 IsEmpty]: Start isEmpty. Operand 37997 states and 147713 transitions. [2021-06-05 06:46:14,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:14,236 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:14,236 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:14,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4115,220 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:14,436 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:14,436 INFO L82 PathProgramCache]: Analyzing trace with hash 384081845, now seen corresponding path program 143 times [2021-06-05 06:46:14,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:14,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130756101] [2021-06-05 06:46:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:14,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:14,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130756101] [2021-06-05 06:46:14,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130756101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:14,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770897751] [2021-06-05 06:46:14,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:14,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:46:14,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:14,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:14,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:14,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770897751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:14,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:14,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:46:14,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610923434] [2021-06-05 06:46:14,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:14,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:14,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:14,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:14,564 INFO L87 Difference]: Start difference. First operand 37997 states and 147713 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:15,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:15,765 INFO L93 Difference]: Finished difference Result 61433 states and 228496 transitions. [2021-06-05 06:46:15,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:46:15,766 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:15,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:15,936 INFO L225 Difference]: With dead ends: 61433 [2021-06-05 06:46:15,936 INFO L226 Difference]: Without dead ends: 61433 [2021-06-05 06:46:15,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 689.2ms TimeCoverageRelationStatistics Valid=978, Invalid=3714, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:46:15,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61433 states. [2021-06-05 06:46:17,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61433 to 40835. [2021-06-05 06:46:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40835 states, 40834 states have (on average 3.891022187392859) internal successors, (158886), 40834 states have internal predecessors, (158886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40835 states to 40835 states and 158886 transitions. [2021-06-05 06:46:17,345 INFO L78 Accepts]: Start accepts. Automaton has 40835 states and 158886 transitions. Word has length 28 [2021-06-05 06:46:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:17,345 INFO L482 AbstractCegarLoop]: Abstraction has 40835 states and 158886 transitions. [2021-06-05 06:46:17,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:17,345 INFO L276 IsEmpty]: Start isEmpty. Operand 40835 states and 158886 transitions. [2021-06-05 06:46:17,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:17,408 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:17,408 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:17,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4116,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:17,613 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:17,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:17,613 INFO L82 PathProgramCache]: Analyzing trace with hash 465457933, now seen corresponding path program 144 times [2021-06-05 06:46:17,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:17,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061017697] [2021-06-05 06:46:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:17,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:17,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061017697] [2021-06-05 06:46:17,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061017697] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:17,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632362604] [2021-06-05 06:46:17,643 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:17,665 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:46:17,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:17,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:17,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:17,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632362604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:17,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:17,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:46:17,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680823821] [2021-06-05 06:46:17,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:17,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:17,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:17,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:17,736 INFO L87 Difference]: Start difference. First operand 40835 states and 158886 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:18,873 INFO L93 Difference]: Finished difference Result 60949 states and 227223 transitions. [2021-06-05 06:46:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:46:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:19,029 INFO L225 Difference]: With dead ends: 60949 [2021-06-05 06:46:19,029 INFO L226 Difference]: Without dead ends: 60941 [2021-06-05 06:46:19,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 627.8ms TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:46:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60941 states. [2021-06-05 06:46:20,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60941 to 40523. [2021-06-05 06:46:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40523 states, 40522 states have (on average 3.8970929371699325) internal successors, (157918), 40522 states have internal predecessors, (157918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 157918 transitions. [2021-06-05 06:46:20,397 INFO L78 Accepts]: Start accepts. Automaton has 40523 states and 157918 transitions. Word has length 28 [2021-06-05 06:46:20,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:20,397 INFO L482 AbstractCegarLoop]: Abstraction has 40523 states and 157918 transitions. [2021-06-05 06:46:20,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 40523 states and 157918 transitions. [2021-06-05 06:46:20,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:20,467 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:20,467 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:20,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4117,222 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:20,673 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:20,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:20,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1049634039, now seen corresponding path program 145 times [2021-06-05 06:46:20,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:20,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258138006] [2021-06-05 06:46:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:20,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:20,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258138006] [2021-06-05 06:46:20,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258138006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:20,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344921597] [2021-06-05 06:46:20,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:20,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:20,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:20,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344921597] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:20,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:20,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:46:20,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446046274] [2021-06-05 06:46:20,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:20,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:20,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:20,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:20,851 INFO L87 Difference]: Start difference. First operand 40523 states and 157918 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:21,878 INFO L93 Difference]: Finished difference Result 59492 states and 223219 transitions. [2021-06-05 06:46:21,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:46:21,878 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:22,027 INFO L225 Difference]: With dead ends: 59492 [2021-06-05 06:46:22,027 INFO L226 Difference]: Without dead ends: 59468 [2021-06-05 06:46:22,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 366.6ms TimeCoverageRelationStatistics Valid=498, Invalid=1758, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:46:22,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59468 states. [2021-06-05 06:46:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59468 to 40429. [2021-06-05 06:46:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40429 states, 40428 states have (on average 3.8969278717720393) internal successors, (157545), 40428 states have internal predecessors, (157545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40429 states to 40429 states and 157545 transitions. [2021-06-05 06:46:23,221 INFO L78 Accepts]: Start accepts. Automaton has 40429 states and 157545 transitions. Word has length 28 [2021-06-05 06:46:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:23,221 INFO L482 AbstractCegarLoop]: Abstraction has 40429 states and 157545 transitions. [2021-06-05 06:46:23,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 40429 states and 157545 transitions. [2021-06-05 06:46:23,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:23,282 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:23,282 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:23,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4118,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:23,483 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:23,483 INFO L82 PathProgramCache]: Analyzing trace with hash 547492677, now seen corresponding path program 146 times [2021-06-05 06:46:23,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:23,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738294865] [2021-06-05 06:46:23,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:46:23,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:23,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738294865] [2021-06-05 06:46:23,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738294865] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:23,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538448660] [2021-06-05 06:46:23,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:23,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:46:23,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:23,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:23,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:23,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538448660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:23,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:23,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:46:23,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449712772] [2021-06-05 06:46:23,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:23,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:23,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:23,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:23,812 INFO L87 Difference]: Start difference. First operand 40429 states and 157545 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:24,884 INFO L93 Difference]: Finished difference Result 60725 states and 226603 transitions. [2021-06-05 06:46:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 06:46:24,885 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:24,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:25,054 INFO L225 Difference]: With dead ends: 60725 [2021-06-05 06:46:25,054 INFO L226 Difference]: Without dead ends: 60725 [2021-06-05 06:46:25,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 739.8ms TimeCoverageRelationStatistics Valid=878, Invalid=3412, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 06:46:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60725 states. [2021-06-05 06:46:26,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60725 to 40525. [2021-06-05 06:46:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40525 states, 40524 states have (on average 3.8954446747606357) internal successors, (157859), 40524 states have internal predecessors, (157859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40525 states to 40525 states and 157859 transitions. [2021-06-05 06:46:26,476 INFO L78 Accepts]: Start accepts. Automaton has 40525 states and 157859 transitions. Word has length 28 [2021-06-05 06:46:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:26,476 INFO L482 AbstractCegarLoop]: Abstraction has 40525 states and 157859 transitions. [2021-06-05 06:46:26,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 40525 states and 157859 transitions. [2021-06-05 06:46:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:26,538 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:26,538 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:26,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4119 [2021-06-05 06:46:26,739 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:26,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:26,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2104435465, now seen corresponding path program 147 times [2021-06-05 06:46:26,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:26,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092307198] [2021-06-05 06:46:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:46:26,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:26,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092307198] [2021-06-05 06:46:26,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092307198] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:26,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247435769] [2021-06-05 06:46:26,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:26,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:46:26,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:26,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:26,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:26,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247435769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:26,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:26,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:46:26,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108137188] [2021-06-05 06:46:26,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:26,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:26,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:26,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:26,878 INFO L87 Difference]: Start difference. First operand 40525 states and 157859 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:28,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:28,054 INFO L93 Difference]: Finished difference Result 60415 states and 225723 transitions. [2021-06-05 06:46:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:46:28,055 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:28,205 INFO L225 Difference]: With dead ends: 60415 [2021-06-05 06:46:28,205 INFO L226 Difference]: Without dead ends: 60407 [2021-06-05 06:46:28,205 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 456.8ms TimeCoverageRelationStatistics Valid=716, Invalid=2590, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:46:28,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60407 states. [2021-06-05 06:46:29,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60407 to 40457. [2021-06-05 06:46:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40457 states, 40456 states have (on average 3.8967520268934153) internal successors, (157647), 40456 states have internal predecessors, (157647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:29,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40457 states to 40457 states and 157647 transitions. [2021-06-05 06:46:29,415 INFO L78 Accepts]: Start accepts. Automaton has 40457 states and 157647 transitions. Word has length 28 [2021-06-05 06:46:29,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:29,416 INFO L482 AbstractCegarLoop]: Abstraction has 40457 states and 157647 transitions. [2021-06-05 06:46:29,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:29,416 INFO L276 IsEmpty]: Start isEmpty. Operand 40457 states and 157647 transitions. [2021-06-05 06:46:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:29,479 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:29,479 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:29,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 225 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4120 [2021-06-05 06:46:29,680 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:29,680 INFO L82 PathProgramCache]: Analyzing trace with hash 923074653, now seen corresponding path program 148 times [2021-06-05 06:46:29,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:29,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793988742] [2021-06-05 06:46:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:46:29,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:29,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793988742] [2021-06-05 06:46:29,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793988742] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:29,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978280902] [2021-06-05 06:46:29,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:29,740 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:46:29,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:29,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:29,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:29,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978280902] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:29,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:29,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:46:29,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591592184] [2021-06-05 06:46:29,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:46:29,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:29,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:46:29,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:46:29,818 INFO L87 Difference]: Start difference. First operand 40457 states and 157647 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:30,823 INFO L93 Difference]: Finished difference Result 59146 states and 222212 transitions. [2021-06-05 06:46:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:46:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:30,987 INFO L225 Difference]: With dead ends: 59146 [2021-06-05 06:46:30,987 INFO L226 Difference]: Without dead ends: 59122 [2021-06-05 06:46:30,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 334.9ms TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:46:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59122 states. [2021-06-05 06:46:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59122 to 40433. [2021-06-05 06:46:32,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40433 states, 40432 states have (on average 3.896888603086664) internal successors, (157559), 40432 states have internal predecessors, (157559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40433 states to 40433 states and 157559 transitions. [2021-06-05 06:46:32,250 INFO L78 Accepts]: Start accepts. Automaton has 40433 states and 157559 transitions. Word has length 28 [2021-06-05 06:46:32,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:32,250 INFO L482 AbstractCegarLoop]: Abstraction has 40433 states and 157559 transitions. [2021-06-05 06:46:32,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:32,251 INFO L276 IsEmpty]: Start isEmpty. Operand 40433 states and 157559 transitions. [2021-06-05 06:46:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:32,307 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:32,307 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:32,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4121 [2021-06-05 06:46:32,507 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:32,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:32,508 INFO L82 PathProgramCache]: Analyzing trace with hash 100408761, now seen corresponding path program 149 times [2021-06-05 06:46:32,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:32,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866782614] [2021-06-05 06:46:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:32,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:32,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866782614] [2021-06-05 06:46:32,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866782614] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:32,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591756899] [2021-06-05 06:46:32,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:32,569 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:46:32,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:32,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:32,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:32,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591756899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:32,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:32,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:46:32,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886444848] [2021-06-05 06:46:32,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:32,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:32,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:32,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:32,832 INFO L87 Difference]: Start difference. First operand 40433 states and 157559 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:34,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:34,243 INFO L93 Difference]: Finished difference Result 62335 states and 231295 transitions. [2021-06-05 06:46:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-05 06:46:34,244 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:34,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:34,406 INFO L225 Difference]: With dead ends: 62335 [2021-06-05 06:46:34,406 INFO L226 Difference]: Without dead ends: 62335 [2021-06-05 06:46:34,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 988.0ms TimeCoverageRelationStatistics Valid=1421, Invalid=5889, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 06:46:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62335 states. [2021-06-05 06:46:35,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62335 to 44875. [2021-06-05 06:46:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44875 states, 44874 states have (on average 3.8457458662031465) internal successors, (172574), 44874 states have internal predecessors, (172574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44875 states to 44875 states and 172574 transitions. [2021-06-05 06:46:35,859 INFO L78 Accepts]: Start accepts. Automaton has 44875 states and 172574 transitions. Word has length 28 [2021-06-05 06:46:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:35,859 INFO L482 AbstractCegarLoop]: Abstraction has 44875 states and 172574 transitions. [2021-06-05 06:46:35,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:35,859 INFO L276 IsEmpty]: Start isEmpty. Operand 44875 states and 172574 transitions. [2021-06-05 06:46:35,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:35,945 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:35,945 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:36,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4122 [2021-06-05 06:46:36,145 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:36,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:36,145 INFO L82 PathProgramCache]: Analyzing trace with hash 181784849, now seen corresponding path program 150 times [2021-06-05 06:46:36,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:36,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369024775] [2021-06-05 06:46:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:36,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:36,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369024775] [2021-06-05 06:46:36,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369024775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:36,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856913178] [2021-06-05 06:46:36,185 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:36,210 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:46:36,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:36,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:36,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:36,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856913178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:36,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:36,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:46:36,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110245456] [2021-06-05 06:46:36,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:36,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:36,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:36,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:36,283 INFO L87 Difference]: Start difference. First operand 44875 states and 172574 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:37,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:37,697 INFO L93 Difference]: Finished difference Result 61566 states and 229189 transitions. [2021-06-05 06:46:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:46:37,698 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:37,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:37,859 INFO L225 Difference]: With dead ends: 61566 [2021-06-05 06:46:37,859 INFO L226 Difference]: Without dead ends: 61558 [2021-06-05 06:46:37,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 658.5ms TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:46:37,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61558 states. [2021-06-05 06:46:39,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61558 to 43735. [2021-06-05 06:46:39,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43735 states, 43734 states have (on average 3.8648191338546667) internal successors, (169024), 43734 states have internal predecessors, (169024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43735 states to 43735 states and 169024 transitions. [2021-06-05 06:46:39,194 INFO L78 Accepts]: Start accepts. Automaton has 43735 states and 169024 transitions. Word has length 28 [2021-06-05 06:46:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:39,194 INFO L482 AbstractCegarLoop]: Abstraction has 43735 states and 169024 transitions. [2021-06-05 06:46:39,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:39,194 INFO L276 IsEmpty]: Start isEmpty. Operand 43735 states and 169024 transitions. [2021-06-05 06:46:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:39,267 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:39,267 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:39,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 228 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4123 [2021-06-05 06:46:39,467 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:39,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1333307123, now seen corresponding path program 151 times [2021-06-05 06:46:39,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:39,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60327213] [2021-06-05 06:46:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:39,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:39,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60327213] [2021-06-05 06:46:39,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60327213] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:39,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480829598] [2021-06-05 06:46:39,503 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:39,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:39,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:39,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480829598] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:39,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:39,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:46:39,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472100443] [2021-06-05 06:46:39,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:39,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:39,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:39,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:39,593 INFO L87 Difference]: Start difference. First operand 43735 states and 169024 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:39,806 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-06-05 06:46:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:40,831 INFO L93 Difference]: Finished difference Result 59917 states and 224585 transitions. [2021-06-05 06:46:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:46:40,832 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:40,987 INFO L225 Difference]: With dead ends: 59917 [2021-06-05 06:46:40,988 INFO L226 Difference]: Without dead ends: 59893 [2021-06-05 06:46:40,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 739.5ms TimeCoverageRelationStatistics Valid=814, Invalid=3218, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:46:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59893 states. [2021-06-05 06:46:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59893 to 43743. [2021-06-05 06:46:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43743 states, 43742 states have (on average 3.8626948927803944) internal successors, (168962), 43742 states have internal predecessors, (168962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43743 states to 43743 states and 168962 transitions. [2021-06-05 06:46:42,379 INFO L78 Accepts]: Start accepts. Automaton has 43743 states and 168962 transitions. Word has length 28 [2021-06-05 06:46:42,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:42,379 INFO L482 AbstractCegarLoop]: Abstraction has 43743 states and 168962 transitions. [2021-06-05 06:46:42,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 43743 states and 168962 transitions. [2021-06-05 06:46:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:42,452 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:42,452 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:42,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4124,229 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:42,657 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:42,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:42,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1959694861, now seen corresponding path program 152 times [2021-06-05 06:46:42,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:42,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767638970] [2021-06-05 06:46:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:42,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:42,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767638970] [2021-06-05 06:46:42,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767638970] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:42,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375463443] [2021-06-05 06:46:42,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:42,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:46:42,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:42,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:42,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:42,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375463443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:42,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:42,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:46:42,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085789413] [2021-06-05 06:46:42,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:42,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:42,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:42,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:42,794 INFO L87 Difference]: Start difference. First operand 43743 states and 168962 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:43,907 INFO L93 Difference]: Finished difference Result 61196 states and 228200 transitions. [2021-06-05 06:46:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:46:43,907 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:44,076 INFO L225 Difference]: With dead ends: 61196 [2021-06-05 06:46:44,076 INFO L226 Difference]: Without dead ends: 61156 [2021-06-05 06:46:44,076 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 543.7ms TimeCoverageRelationStatistics Valid=722, Invalid=2818, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:46:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61156 states. [2021-06-05 06:46:45,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61156 to 43881. [2021-06-05 06:46:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43881 states, 43880 states have (on average 3.862010027347311) internal successors, (169465), 43880 states have internal predecessors, (169465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43881 states to 43881 states and 169465 transitions. [2021-06-05 06:46:45,442 INFO L78 Accepts]: Start accepts. Automaton has 43881 states and 169465 transitions. Word has length 28 [2021-06-05 06:46:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:45,442 INFO L482 AbstractCegarLoop]: Abstraction has 43881 states and 169465 transitions. [2021-06-05 06:46:45,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 43881 states and 169465 transitions. [2021-06-05 06:46:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:45,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:45,508 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:45,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4125,230 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:45,709 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:45,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:45,709 INFO L82 PathProgramCache]: Analyzing trace with hash 243917385, now seen corresponding path program 153 times [2021-06-05 06:46:45,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:45,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597723964] [2021-06-05 06:46:45,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:45,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:45,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597723964] [2021-06-05 06:46:45,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597723964] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:45,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795209343] [2021-06-05 06:46:45,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:45,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:46:45,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:45,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:45,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:45,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795209343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:45,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:45,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:46:45,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13725154] [2021-06-05 06:46:45,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:46:45,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:45,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:46:45,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:46:45,866 INFO L87 Difference]: Start difference. First operand 43881 states and 169465 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:47,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:47,419 INFO L93 Difference]: Finished difference Result 60421 states and 225864 transitions. [2021-06-05 06:46:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-05 06:46:47,420 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:47,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:47,582 INFO L225 Difference]: With dead ends: 60421 [2021-06-05 06:46:47,582 INFO L226 Difference]: Without dead ends: 60421 [2021-06-05 06:46:47,582 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2487 ImplicationChecksByTransitivity, 797.1ms TimeCoverageRelationStatistics Valid=1250, Invalid=5392, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 06:46:47,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60421 states. [2021-06-05 06:46:48,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60421 to 44786. [2021-06-05 06:46:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44786 states, 44785 states have (on average 3.8525399129172713) internal successors, (172536), 44785 states have internal predecessors, (172536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:48,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44786 states to 44786 states and 172536 transitions. [2021-06-05 06:46:48,954 INFO L78 Accepts]: Start accepts. Automaton has 44786 states and 172536 transitions. Word has length 28 [2021-06-05 06:46:48,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:48,954 INFO L482 AbstractCegarLoop]: Abstraction has 44786 states and 172536 transitions. [2021-06-05 06:46:48,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:48,955 INFO L276 IsEmpty]: Start isEmpty. Operand 44786 states and 172536 transitions. [2021-06-05 06:46:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:49,022 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:49,022 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:49,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4126 [2021-06-05 06:46:49,223 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:49,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:49,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1886956539, now seen corresponding path program 154 times [2021-06-05 06:46:49,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:49,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820643510] [2021-06-05 06:46:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:49,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:49,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820643510] [2021-06-05 06:46:49,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820643510] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:49,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434422070] [2021-06-05 06:46:49,259 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:49,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:46:49,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:49,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:49,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:49,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434422070] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:49,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:49,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:46:49,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793980079] [2021-06-05 06:46:49,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:46:49,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:49,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:46:49,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:46:49,372 INFO L87 Difference]: Start difference. First operand 44786 states and 172536 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:50,714 INFO L93 Difference]: Finished difference Result 59926 states and 224477 transitions. [2021-06-05 06:46:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:46:50,715 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:50,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:50,866 INFO L225 Difference]: With dead ends: 59926 [2021-06-05 06:46:50,867 INFO L226 Difference]: Without dead ends: 59918 [2021-06-05 06:46:50,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 630.1ms TimeCoverageRelationStatistics Valid=973, Invalid=3857, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:46:50,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59918 states. [2021-06-05 06:46:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59918 to 44710. [2021-06-05 06:46:52,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44710 states, 44709 states have (on average 3.8538101948153614) internal successors, (172300), 44709 states have internal predecessors, (172300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44710 states to 44710 states and 172300 transitions. [2021-06-05 06:46:52,129 INFO L78 Accepts]: Start accepts. Automaton has 44710 states and 172300 transitions. Word has length 28 [2021-06-05 06:46:52,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:52,129 INFO L482 AbstractCegarLoop]: Abstraction has 44710 states and 172300 transitions. [2021-06-05 06:46:52,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:52,129 INFO L276 IsEmpty]: Start isEmpty. Operand 44710 states and 172300 transitions. [2021-06-05 06:46:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:52,196 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:52,196 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:52,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4127,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:52,397 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:52,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:52,397 INFO L82 PathProgramCache]: Analyzing trace with hash 619499361, now seen corresponding path program 155 times [2021-06-05 06:46:52,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:52,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432722193] [2021-06-05 06:46:52,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:52,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:52,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432722193] [2021-06-05 06:46:52,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432722193] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:52,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409964644] [2021-06-05 06:46:52,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:52,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:46:52,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:52,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:52,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:52,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409964644] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:52,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:52,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:46:52,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758817710] [2021-06-05 06:46:52,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:52,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:52,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:52,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:52,540 INFO L87 Difference]: Start difference. First operand 44710 states and 172300 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:53,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:53,820 INFO L93 Difference]: Finished difference Result 59403 states and 223231 transitions. [2021-06-05 06:46:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:46:53,821 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:53,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:53,976 INFO L225 Difference]: With dead ends: 59403 [2021-06-05 06:46:53,976 INFO L226 Difference]: Without dead ends: 59379 [2021-06-05 06:46:53,977 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 537.5ms TimeCoverageRelationStatistics Valid=750, Invalid=3032, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:46:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59379 states. [2021-06-05 06:46:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59379 to 44696. [2021-06-05 06:46:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44696 states, 44695 states have (on average 3.8537867770444123) internal successors, (172245), 44695 states have internal predecessors, (172245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44696 states to 44696 states and 172245 transitions. [2021-06-05 06:46:55,546 INFO L78 Accepts]: Start accepts. Automaton has 44696 states and 172245 transitions. Word has length 28 [2021-06-05 06:46:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:55,547 INFO L482 AbstractCegarLoop]: Abstraction has 44696 states and 172245 transitions. [2021-06-05 06:46:55,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 44696 states and 172245 transitions. [2021-06-05 06:46:55,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:55,622 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:55,622 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:55,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4128 [2021-06-05 06:46:55,823 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:55,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:55,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1303085277, now seen corresponding path program 156 times [2021-06-05 06:46:55,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:55,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400915613] [2021-06-05 06:46:55,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:55,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:55,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400915613] [2021-06-05 06:46:55,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400915613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:55,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801604780] [2021-06-05 06:46:55,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:55,884 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:46:55,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:55,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:55,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:55,965 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:55,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801604780] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:55,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:55,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 06:46:55,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621215339] [2021-06-05 06:46:55,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:46:55,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:55,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:46:55,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:46:55,966 INFO L87 Difference]: Start difference. First operand 44696 states and 172245 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:57,147 INFO L93 Difference]: Finished difference Result 59185 states and 222538 transitions. [2021-06-05 06:46:57,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 06:46:57,147 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:46:57,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:57,327 INFO L225 Difference]: With dead ends: 59185 [2021-06-05 06:46:57,327 INFO L226 Difference]: Without dead ends: 59145 [2021-06-05 06:46:57,327 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 570.8ms TimeCoverageRelationStatistics Valid=696, Invalid=2726, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:46:57,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59145 states. [2021-06-05 06:46:58,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59145 to 45045. [2021-06-05 06:46:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45045 states, 45044 states have (on average 3.855652251132226) internal successors, (173674), 45044 states have internal predecessors, (173674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:58,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45045 states to 45045 states and 173674 transitions. [2021-06-05 06:46:58,872 INFO L78 Accepts]: Start accepts. Automaton has 45045 states and 173674 transitions. Word has length 28 [2021-06-05 06:46:58,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:58,873 INFO L482 AbstractCegarLoop]: Abstraction has 45045 states and 173674 transitions. [2021-06-05 06:46:58,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:58,873 INFO L276 IsEmpty]: Start isEmpty. Operand 45045 states and 173674 transitions. [2021-06-05 06:46:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:58,943 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:58,943 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:59,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4129,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:59,143 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:59,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:59,144 INFO L82 PathProgramCache]: Analyzing trace with hash 806750187, now seen corresponding path program 157 times [2021-06-05 06:46:59,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:59,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209873302] [2021-06-05 06:46:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:59,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:59,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209873302] [2021-06-05 06:46:59,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209873302] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:59,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981567412] [2021-06-05 06:46:59,180 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:59,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:59,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:59,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981567412] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:59,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:59,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:46:59,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777812990] [2021-06-05 06:46:59,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:59,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:59,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:59,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:59,289 INFO L87 Difference]: Start difference. First operand 45045 states and 173674 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:00,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:00,441 INFO L93 Difference]: Finished difference Result 71823 states and 267438 transitions. [2021-06-05 06:47:00,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:47:00,441 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:00,907 INFO L225 Difference]: With dead ends: 71823 [2021-06-05 06:47:00,907 INFO L226 Difference]: Without dead ends: 71823 [2021-06-05 06:47:00,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 557.9ms TimeCoverageRelationStatistics Valid=901, Invalid=3131, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:47:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71823 states. [2021-06-05 06:47:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71823 to 46211. [2021-06-05 06:47:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46211 states, 46210 states have (on average 3.86991993075092) internal successors, (178829), 46210 states have internal predecessors, (178829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46211 states to 46211 states and 178829 transitions. [2021-06-05 06:47:02,276 INFO L78 Accepts]: Start accepts. Automaton has 46211 states and 178829 transitions. Word has length 28 [2021-06-05 06:47:02,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:02,276 INFO L482 AbstractCegarLoop]: Abstraction has 46211 states and 178829 transitions. [2021-06-05 06:47:02,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:02,276 INFO L276 IsEmpty]: Start isEmpty. Operand 46211 states and 178829 transitions. [2021-06-05 06:47:02,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:02,345 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:02,345 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:02,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4130 [2021-06-05 06:47:02,549 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:02,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:02,549 INFO L82 PathProgramCache]: Analyzing trace with hash 132028309, now seen corresponding path program 158 times [2021-06-05 06:47:02,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:02,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768308029] [2021-06-05 06:47:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:02,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:02,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768308029] [2021-06-05 06:47:02,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768308029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:02,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442794376] [2021-06-05 06:47:02,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:02,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:47:02,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:02,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:02,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:02,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442794376] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:02,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:02,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:47:02,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831553925] [2021-06-05 06:47:02,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:47:02,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:02,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:47:02,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:47:02,697 INFO L87 Difference]: Start difference. First operand 46211 states and 178829 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:04,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:04,021 INFO L93 Difference]: Finished difference Result 65877 states and 248593 transitions. [2021-06-05 06:47:04,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:47:04,021 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:04,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:04,188 INFO L225 Difference]: With dead ends: 65877 [2021-06-05 06:47:04,189 INFO L226 Difference]: Without dead ends: 65877 [2021-06-05 06:47:04,189 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 513.9ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:47:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65877 states. [2021-06-05 06:47:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65877 to 46241. [2021-06-05 06:47:05,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46241 states, 46240 states have (on average 3.8697231833910033) internal successors, (178936), 46240 states have internal predecessors, (178936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46241 states to 46241 states and 178936 transitions. [2021-06-05 06:47:05,564 INFO L78 Accepts]: Start accepts. Automaton has 46241 states and 178936 transitions. Word has length 28 [2021-06-05 06:47:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:05,564 INFO L482 AbstractCegarLoop]: Abstraction has 46241 states and 178936 transitions. [2021-06-05 06:47:05,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 46241 states and 178936 transitions. [2021-06-05 06:47:05,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:05,637 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:05,638 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:05,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4131,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:05,838 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:05,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:05,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1785388485, now seen corresponding path program 159 times [2021-06-05 06:47:05,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:05,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602990459] [2021-06-05 06:47:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:05,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:05,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602990459] [2021-06-05 06:47:05,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602990459] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:05,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118195550] [2021-06-05 06:47:05,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:05,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:47:05,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:05,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:05,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:05,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118195550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:05,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:05,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:47:05,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556225281] [2021-06-05 06:47:05,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:47:05,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:05,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:47:05,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:47:05,995 INFO L87 Difference]: Start difference. First operand 46241 states and 178936 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:07,852 INFO L93 Difference]: Finished difference Result 66732 states and 251021 transitions. [2021-06-05 06:47:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 06:47:07,853 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:08,041 INFO L225 Difference]: With dead ends: 66732 [2021-06-05 06:47:08,041 INFO L226 Difference]: Without dead ends: 66732 [2021-06-05 06:47:08,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2901 ImplicationChecksByTransitivity, 910.4ms TimeCoverageRelationStatistics Valid=1557, Invalid=5925, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 06:47:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66732 states. [2021-06-05 06:47:09,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66732 to 46505. [2021-06-05 06:47:09,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46505 states, 46504 states have (on average 3.8662050576294513) internal successors, (179794), 46504 states have internal predecessors, (179794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:09,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46505 states to 46505 states and 179794 transitions. [2021-06-05 06:47:09,407 INFO L78 Accepts]: Start accepts. Automaton has 46505 states and 179794 transitions. Word has length 28 [2021-06-05 06:47:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:09,407 INFO L482 AbstractCegarLoop]: Abstraction has 46505 states and 179794 transitions. [2021-06-05 06:47:09,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:09,408 INFO L276 IsEmpty]: Start isEmpty. Operand 46505 states and 179794 transitions. [2021-06-05 06:47:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:09,478 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:09,478 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:09,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4132 [2021-06-05 06:47:09,678 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:09,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:09,678 INFO L82 PathProgramCache]: Analyzing trace with hash -866539657, now seen corresponding path program 160 times [2021-06-05 06:47:09,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:09,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008901943] [2021-06-05 06:47:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:09,913 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-06-05 06:47:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:09,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:09,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008901943] [2021-06-05 06:47:09,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008901943] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:09,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142414921] [2021-06-05 06:47:09,948 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:09,976 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:47:09,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:09,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:09,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:10,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142414921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:10,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:10,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:47:10,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078483771] [2021-06-05 06:47:10,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:47:10,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:10,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:47:10,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:47:10,069 INFO L87 Difference]: Start difference. First operand 46505 states and 179794 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:11,326 INFO L93 Difference]: Finished difference Result 65947 states and 248794 transitions. [2021-06-05 06:47:11,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:47:11,326 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:11,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:11,499 INFO L225 Difference]: With dead ends: 65947 [2021-06-05 06:47:11,499 INFO L226 Difference]: Without dead ends: 65943 [2021-06-05 06:47:11,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 886.8ms TimeCoverageRelationStatistics Valid=1139, Invalid=3831, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 06:47:11,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65943 states. [2021-06-05 06:47:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65943 to 46141. [2021-06-05 06:47:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46141 states, 46140 states have (on average 3.8699176419592543) internal successors, (178558), 46140 states have internal predecessors, (178558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46141 states to 46141 states and 178558 transitions. [2021-06-05 06:47:13,066 INFO L78 Accepts]: Start accepts. Automaton has 46141 states and 178558 transitions. Word has length 28 [2021-06-05 06:47:13,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:13,066 INFO L482 AbstractCegarLoop]: Abstraction has 46141 states and 178558 transitions. [2021-06-05 06:47:13,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 46141 states and 178558 transitions. [2021-06-05 06:47:13,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:13,147 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:13,147 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:13,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4133,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:13,348 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:13,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:13,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1338899459, now seen corresponding path program 161 times [2021-06-05 06:47:13,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:13,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603509288] [2021-06-05 06:47:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:13,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:13,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603509288] [2021-06-05 06:47:13,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603509288] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:13,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952576550] [2021-06-05 06:47:13,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:13,413 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:47:13,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:13,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:13,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:13,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952576550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:13,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:13,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:47:13,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821835204] [2021-06-05 06:47:13,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:47:13,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:13,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:47:13,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:47:13,506 INFO L87 Difference]: Start difference. First operand 46141 states and 178558 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:14,383 INFO L93 Difference]: Finished difference Result 60232 states and 229011 transitions. [2021-06-05 06:47:14,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:47:14,383 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:14,543 INFO L225 Difference]: With dead ends: 60232 [2021-06-05 06:47:14,543 INFO L226 Difference]: Without dead ends: 60232 [2021-06-05 06:47:14,543 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 458.0ms TimeCoverageRelationStatistics Valid=608, Invalid=2148, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:47:14,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60232 states. [2021-06-05 06:47:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60232 to 46157. [2021-06-05 06:47:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46157 states, 46156 states have (on average 3.8717826501429933) internal successors, (178706), 46156 states have internal predecessors, (178706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46157 states to 46157 states and 178706 transitions. [2021-06-05 06:47:16,086 INFO L78 Accepts]: Start accepts. Automaton has 46157 states and 178706 transitions. Word has length 28 [2021-06-05 06:47:16,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:16,086 INFO L482 AbstractCegarLoop]: Abstraction has 46157 states and 178706 transitions. [2021-06-05 06:47:16,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 46157 states and 178706 transitions. [2021-06-05 06:47:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:16,156 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:16,156 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:16,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4134 [2021-06-05 06:47:16,357 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:16,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:16,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1775748157, now seen corresponding path program 162 times [2021-06-05 06:47:16,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:16,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845860065] [2021-06-05 06:47:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:16,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:16,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845860065] [2021-06-05 06:47:16,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845860065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:16,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565881732] [2021-06-05 06:47:16,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:16,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:47:16,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:16,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:16,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:16,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565881732] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:16,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:16,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:47:16,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828159362] [2021-06-05 06:47:16,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:47:16,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:16,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:47:16,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:47:16,497 INFO L87 Difference]: Start difference. First operand 46157 states and 178706 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:17,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:17,230 INFO L93 Difference]: Finished difference Result 59549 states and 227144 transitions. [2021-06-05 06:47:17,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:47:17,230 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:17,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:17,387 INFO L225 Difference]: With dead ends: 59549 [2021-06-05 06:47:17,387 INFO L226 Difference]: Without dead ends: 59537 [2021-06-05 06:47:17,387 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 342.1ms TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:47:17,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59537 states. [2021-06-05 06:47:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59537 to 46091. [2021-06-05 06:47:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46091 states, 46090 states have (on average 3.8729225428509437) internal successors, (178503), 46090 states have internal predecessors, (178503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:18,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46091 states to 46091 states and 178503 transitions. [2021-06-05 06:47:18,943 INFO L78 Accepts]: Start accepts. Automaton has 46091 states and 178503 transitions. Word has length 28 [2021-06-05 06:47:18,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:18,944 INFO L482 AbstractCegarLoop]: Abstraction has 46091 states and 178503 transitions. [2021-06-05 06:47:18,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 46091 states and 178503 transitions. [2021-06-05 06:47:19,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:19,027 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:19,027 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:19,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4135,240 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:19,228 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:19,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:19,228 INFO L82 PathProgramCache]: Analyzing trace with hash 517999999, now seen corresponding path program 163 times [2021-06-05 06:47:19,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:19,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052479720] [2021-06-05 06:47:19,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:19,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:19,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052479720] [2021-06-05 06:47:19,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052479720] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:19,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266565443] [2021-06-05 06:47:19,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:19,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:19,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:19,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266565443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:19,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:19,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:47:19,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045447836] [2021-06-05 06:47:19,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:47:19,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:19,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:47:19,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:47:19,389 INFO L87 Difference]: Start difference. First operand 46091 states and 178503 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:20,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:20,052 INFO L93 Difference]: Finished difference Result 50569 states and 193277 transitions. [2021-06-05 06:47:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:47:20,053 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:20,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:20,183 INFO L225 Difference]: With dead ends: 50569 [2021-06-05 06:47:20,183 INFO L226 Difference]: Without dead ends: 50569 [2021-06-05 06:47:20,184 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 322.3ms TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:47:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50569 states. [2021-06-05 06:47:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50569 to 46299. [2021-06-05 06:47:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46299 states, 46298 states have (on average 3.8704695667199447) internal successors, (179195), 46298 states have internal predecessors, (179195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46299 states to 46299 states and 179195 transitions. [2021-06-05 06:47:21,319 INFO L78 Accepts]: Start accepts. Automaton has 46299 states and 179195 transitions. Word has length 28 [2021-06-05 06:47:21,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:21,319 INFO L482 AbstractCegarLoop]: Abstraction has 46299 states and 179195 transitions. [2021-06-05 06:47:21,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 46299 states and 179195 transitions. [2021-06-05 06:47:21,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:21,388 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:21,388 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:21,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4136,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:21,588 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:21,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:21,589 INFO L82 PathProgramCache]: Analyzing trace with hash -480567967, now seen corresponding path program 164 times [2021-06-05 06:47:21,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:21,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329217892] [2021-06-05 06:47:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:21,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:21,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329217892] [2021-06-05 06:47:21,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329217892] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:21,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313033067] [2021-06-05 06:47:21,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:21,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:47:21,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:21,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:21,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:21,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313033067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:21,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:21,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:47:21,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682305146] [2021-06-05 06:47:21,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:47:21,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:21,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:47:21,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:47:21,722 INFO L87 Difference]: Start difference. First operand 46299 states and 179195 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:22,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:22,442 INFO L93 Difference]: Finished difference Result 50416 states and 192879 transitions. [2021-06-05 06:47:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:47:22,445 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:22,581 INFO L225 Difference]: With dead ends: 50416 [2021-06-05 06:47:22,581 INFO L226 Difference]: Without dead ends: 50412 [2021-06-05 06:47:22,581 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 240.2ms TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:47:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50412 states. [2021-06-05 06:47:23,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50412 to 46239. [2021-06-05 06:47:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46239 states, 46238 states have (on average 3.8713395908127515) internal successors, (179003), 46238 states have internal predecessors, (179003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46239 states to 46239 states and 179003 transitions. [2021-06-05 06:47:23,693 INFO L78 Accepts]: Start accepts. Automaton has 46239 states and 179003 transitions. Word has length 28 [2021-06-05 06:47:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:23,693 INFO L482 AbstractCegarLoop]: Abstraction has 46239 states and 179003 transitions. [2021-06-05 06:47:23,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:23,693 INFO L276 IsEmpty]: Start isEmpty. Operand 46239 states and 179003 transitions. [2021-06-05 06:47:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:23,762 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:23,762 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:23,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4137,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:23,963 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:23,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:23,963 INFO L82 PathProgramCache]: Analyzing trace with hash -510371023, now seen corresponding path program 78 times [2021-06-05 06:47:23,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:23,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762435972] [2021-06-05 06:47:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:24,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:24,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762435972] [2021-06-05 06:47:24,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762435972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:24,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71527000] [2021-06-05 06:47:24,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:24,026 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:47:24,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:24,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:24,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:24,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71527000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:24,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:24,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 06:47:24,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541948998] [2021-06-05 06:47:24,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:47:24,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:24,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:47:24,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:47:24,075 INFO L87 Difference]: Start difference. First operand 46239 states and 179003 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:24,601 INFO L93 Difference]: Finished difference Result 50471 states and 192992 transitions. [2021-06-05 06:47:24,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:47:24,602 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:24,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:24,734 INFO L225 Difference]: With dead ends: 50471 [2021-06-05 06:47:24,734 INFO L226 Difference]: Without dead ends: 50471 [2021-06-05 06:47:24,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 202.0ms TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:47:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50471 states. [2021-06-05 06:47:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50471 to 46343. [2021-06-05 06:47:25,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46343 states, 46342 states have (on average 3.869643088343188) internal successors, (179327), 46342 states have internal predecessors, (179327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46343 states to 46343 states and 179327 transitions. [2021-06-05 06:47:26,342 INFO L78 Accepts]: Start accepts. Automaton has 46343 states and 179327 transitions. Word has length 28 [2021-06-05 06:47:26,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:26,342 INFO L482 AbstractCegarLoop]: Abstraction has 46343 states and 179327 transitions. [2021-06-05 06:47:26,342 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:26,342 INFO L276 IsEmpty]: Start isEmpty. Operand 46343 states and 179327 transitions. [2021-06-05 06:47:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:26,424 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:26,424 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:26,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4138 [2021-06-05 06:47:26,624 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:26,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:26,625 INFO L82 PathProgramCache]: Analyzing trace with hash 394977929, now seen corresponding path program 79 times [2021-06-05 06:47:26,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:26,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45310841] [2021-06-05 06:47:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:47:26,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:26,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45310841] [2021-06-05 06:47:26,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45310841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:26,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229250484] [2021-06-05 06:47:26,660 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:26,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:26,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:47:26,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229250484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:26,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:26,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 06:47:26,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997645196] [2021-06-05 06:47:26,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:47:26,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:26,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:47:26,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:47:26,726 INFO L87 Difference]: Start difference. First operand 46343 states and 179327 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:27,174 INFO L93 Difference]: Finished difference Result 50566 states and 193429 transitions. [2021-06-05 06:47:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:47:27,175 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:27,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:27,317 INFO L225 Difference]: With dead ends: 50566 [2021-06-05 06:47:27,317 INFO L226 Difference]: Without dead ends: 50554 [2021-06-05 06:47:27,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 135.0ms TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:47:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50554 states. [2021-06-05 06:47:28,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50554 to 46475. [2021-06-05 06:47:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46475 states, 46474 states have (on average 3.867861600034428) internal successors, (179755), 46474 states have internal predecessors, (179755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46475 states to 46475 states and 179755 transitions. [2021-06-05 06:47:28,458 INFO L78 Accepts]: Start accepts. Automaton has 46475 states and 179755 transitions. Word has length 28 [2021-06-05 06:47:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:28,458 INFO L482 AbstractCegarLoop]: Abstraction has 46475 states and 179755 transitions. [2021-06-05 06:47:28,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:28,458 INFO L276 IsEmpty]: Start isEmpty. Operand 46475 states and 179755 transitions. [2021-06-05 06:47:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:28,533 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:28,533 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:28,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4139,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:28,734 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:28,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:28,734 INFO L82 PathProgramCache]: Analyzing trace with hash -597515635, now seen corresponding path program 80 times [2021-06-05 06:47:28,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:28,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413012843] [2021-06-05 06:47:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:28,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:28,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413012843] [2021-06-05 06:47:28,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413012843] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:28,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685469187] [2021-06-05 06:47:28,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:28,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:47:28,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:28,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:28,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:28,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685469187] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:28,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:28,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 06:47:28,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309201344] [2021-06-05 06:47:28,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:47:28,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:28,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:47:28,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:47:28,841 INFO L87 Difference]: Start difference. First operand 46475 states and 179755 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:29,539 INFO L93 Difference]: Finished difference Result 50530 states and 193345 transitions. [2021-06-05 06:47:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:47:29,539 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:29,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:29,692 INFO L225 Difference]: With dead ends: 50530 [2021-06-05 06:47:29,693 INFO L226 Difference]: Without dead ends: 50510 [2021-06-05 06:47:29,693 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 158.7ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:47:29,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50510 states. [2021-06-05 06:47:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50510 to 46475. [2021-06-05 06:47:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46475 states, 46474 states have (on average 3.867775530404097) internal successors, (179751), 46474 states have internal predecessors, (179751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:30,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46475 states to 46475 states and 179751 transitions. [2021-06-05 06:47:30,927 INFO L78 Accepts]: Start accepts. Automaton has 46475 states and 179751 transitions. Word has length 28 [2021-06-05 06:47:30,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:30,927 INFO L482 AbstractCegarLoop]: Abstraction has 46475 states and 179751 transitions. [2021-06-05 06:47:30,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:30,927 INFO L276 IsEmpty]: Start isEmpty. Operand 46475 states and 179751 transitions. [2021-06-05 06:47:31,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:31,000 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:31,000 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:31,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4140 [2021-06-05 06:47:31,201 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:31,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:31,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1058352779, now seen corresponding path program 165 times [2021-06-05 06:47:31,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:31,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376852249] [2021-06-05 06:47:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:31,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:31,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376852249] [2021-06-05 06:47:31,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376852249] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:31,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178650832] [2021-06-05 06:47:31,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:31,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:47:31,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:31,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:47:31,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:31,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178650832] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:31,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:31,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:47:31,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150438925] [2021-06-05 06:47:31,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:47:31,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:31,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:47:31,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:47:31,313 INFO L87 Difference]: Start difference. First operand 46475 states and 179751 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:31,740 INFO L93 Difference]: Finished difference Result 51418 states and 197281 transitions. [2021-06-05 06:47:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:47:31,741 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:31,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:31,873 INFO L225 Difference]: With dead ends: 51418 [2021-06-05 06:47:31,873 INFO L226 Difference]: Without dead ends: 51415 [2021-06-05 06:47:31,873 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:47:31,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51415 states. [2021-06-05 06:47:32,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51415 to 48550. [2021-06-05 06:47:32,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48550 states, 48549 states have (on average 3.876434118107479) internal successors, (188197), 48549 states have internal predecessors, (188197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:33,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48550 states to 48550 states and 188197 transitions. [2021-06-05 06:47:33,058 INFO L78 Accepts]: Start accepts. Automaton has 48550 states and 188197 transitions. Word has length 28 [2021-06-05 06:47:33,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:33,058 INFO L482 AbstractCegarLoop]: Abstraction has 48550 states and 188197 transitions. [2021-06-05 06:47:33,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:33,059 INFO L276 IsEmpty]: Start isEmpty. Operand 48550 states and 188197 transitions. [2021-06-05 06:47:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:33,131 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:33,131 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:33,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4141,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:33,331 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:33,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash 287300907, now seen corresponding path program 166 times [2021-06-05 06:47:33,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:33,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98642809] [2021-06-05 06:47:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:33,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:33,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98642809] [2021-06-05 06:47:33,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98642809] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:33,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427052640] [2021-06-05 06:47:33,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:33,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:47:33,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:33,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:47:33,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:33,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427052640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:33,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:33,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:47:33,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958746508] [2021-06-05 06:47:33,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:47:33,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:33,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:47:33,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:47:33,456 INFO L87 Difference]: Start difference. First operand 48550 states and 188197 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:33,817 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2021-06-05 06:47:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:34,202 INFO L93 Difference]: Finished difference Result 54116 states and 206168 transitions. [2021-06-05 06:47:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:47:34,202 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:34,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:34,336 INFO L225 Difference]: With dead ends: 54116 [2021-06-05 06:47:34,336 INFO L226 Difference]: Without dead ends: 54116 [2021-06-05 06:47:34,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 424.4ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:47:34,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54116 states. [2021-06-05 06:47:35,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54116 to 43065. [2021-06-05 06:47:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43065 states, 43064 states have (on average 3.8637609139884823) internal successors, (166389), 43064 states have internal predecessors, (166389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43065 states to 43065 states and 166389 transitions. [2021-06-05 06:47:35,477 INFO L78 Accepts]: Start accepts. Automaton has 43065 states and 166389 transitions. Word has length 28 [2021-06-05 06:47:35,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:35,477 INFO L482 AbstractCegarLoop]: Abstraction has 43065 states and 166389 transitions. [2021-06-05 06:47:35,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 43065 states and 166389 transitions. [2021-06-05 06:47:35,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:35,544 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:35,544 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:35,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 247 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4142 [2021-06-05 06:47:35,744 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:35,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:35,745 INFO L82 PathProgramCache]: Analyzing trace with hash 811277253, now seen corresponding path program 167 times [2021-06-05 06:47:35,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:35,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547840643] [2021-06-05 06:47:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:35,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:35,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547840643] [2021-06-05 06:47:35,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547840643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:35,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2966244] [2021-06-05 06:47:35,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:35,800 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:47:35,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:35,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:47:35,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:35,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2966244] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:35,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:35,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:47:35,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154349485] [2021-06-05 06:47:35,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:47:35,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:35,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:47:35,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:47:35,861 INFO L87 Difference]: Start difference. First operand 43065 states and 166389 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:36,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:36,412 INFO L93 Difference]: Finished difference Result 47945 states and 182818 transitions. [2021-06-05 06:47:36,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:47:36,412 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:36,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:36,518 INFO L225 Difference]: With dead ends: 47945 [2021-06-05 06:47:36,518 INFO L226 Difference]: Without dead ends: 47945 [2021-06-05 06:47:36,518 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 222.6ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:47:36,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47945 states. [2021-06-05 06:47:37,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47945 to 43898. [2021-06-05 06:47:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43898 states, 43897 states have (on average 3.8623823951522884) internal successors, (169547), 43897 states have internal predecessors, (169547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:37,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43898 states to 43898 states and 169547 transitions. [2021-06-05 06:47:37,678 INFO L78 Accepts]: Start accepts. Automaton has 43898 states and 169547 transitions. Word has length 28 [2021-06-05 06:47:37,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:37,678 INFO L482 AbstractCegarLoop]: Abstraction has 43898 states and 169547 transitions. [2021-06-05 06:47:37,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:37,678 INFO L276 IsEmpty]: Start isEmpty. Operand 43898 states and 169547 transitions. [2021-06-05 06:47:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:37,747 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:37,747 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:37,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 248 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4143 [2021-06-05 06:47:37,961 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:37,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:37,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1041987733, now seen corresponding path program 168 times [2021-06-05 06:47:37,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:37,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247912215] [2021-06-05 06:47:37,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:37,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:37,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247912215] [2021-06-05 06:47:37,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247912215] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:37,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418740002] [2021-06-05 06:47:37,999 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:38,021 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:47:38,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:38,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:47:38,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:38,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418740002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:38,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:38,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:47:38,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865736571] [2021-06-05 06:47:38,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:47:38,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:38,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:47:38,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:47:38,078 INFO L87 Difference]: Start difference. First operand 43898 states and 169547 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:38,733 INFO L93 Difference]: Finished difference Result 45655 states and 175408 transitions. [2021-06-05 06:47:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:47:38,733 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:38,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:38,844 INFO L225 Difference]: With dead ends: 45655 [2021-06-05 06:47:38,844 INFO L226 Difference]: Without dead ends: 45655 [2021-06-05 06:47:38,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 134.2ms TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:47:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45655 states. [2021-06-05 06:47:39,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45655 to 43906. [2021-06-05 06:47:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43906 states, 43905 states have (on average 3.862225259082109) internal successors, (169571), 43905 states have internal predecessors, (169571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43906 states to 43906 states and 169571 transitions. [2021-06-05 06:47:39,897 INFO L78 Accepts]: Start accepts. Automaton has 43906 states and 169571 transitions. Word has length 28 [2021-06-05 06:47:39,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:39,897 INFO L482 AbstractCegarLoop]: Abstraction has 43906 states and 169571 transitions. [2021-06-05 06:47:39,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:39,897 INFO L276 IsEmpty]: Start isEmpty. Operand 43906 states and 169571 transitions. [2021-06-05 06:47:39,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:39,963 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:39,963 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:40,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4144 [2021-06-05 06:47:40,163 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:40,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:40,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1139256197, now seen corresponding path program 169 times [2021-06-05 06:47:40,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:40,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588221186] [2021-06-05 06:47:40,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:40,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:40,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588221186] [2021-06-05 06:47:40,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588221186] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:40,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338295104] [2021-06-05 06:47:40,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:40,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:47:40,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:40,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338295104] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:40,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:40,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:47:40,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122312366] [2021-06-05 06:47:40,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:47:40,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:40,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:47:40,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:47:40,287 INFO L87 Difference]: Start difference. First operand 43906 states and 169571 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:40,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:40,710 INFO L93 Difference]: Finished difference Result 45371 states and 174477 transitions. [2021-06-05 06:47:40,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:47:40,711 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:47:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:40,817 INFO L225 Difference]: With dead ends: 45371 [2021-06-05 06:47:40,818 INFO L226 Difference]: Without dead ends: 45371 [2021-06-05 06:47:40,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:47:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45371 states. [2021-06-05 06:47:41,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45371 to 43796. [2021-06-05 06:47:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43796 states, 43795 states have (on average 3.8620390455531455) internal successors, (169138), 43795 states have internal predecessors, (169138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43796 states to 43796 states and 169138 transitions. [2021-06-05 06:47:41,835 INFO L78 Accepts]: Start accepts. Automaton has 43796 states and 169138 transitions. Word has length 28 [2021-06-05 06:47:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:41,835 INFO L482 AbstractCegarLoop]: Abstraction has 43796 states and 169138 transitions. [2021-06-05 06:47:41,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 43796 states and 169138 transitions. [2021-06-05 06:47:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:47:41,902 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:41,902 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:42,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4145 [2021-06-05 06:47:42,102 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:42,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:42,103 INFO L82 PathProgramCache]: Analyzing trace with hash -993746325, now seen corresponding path program 170 times [2021-06-05 06:47:42,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:42,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052120978] [2021-06-05 06:47:42,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:42,579 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2021-06-05 06:47:43,065 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2021-06-05 06:47:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:43,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:43,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052120978] [2021-06-05 06:47:43,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052120978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:43,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248429084] [2021-06-05 06:47:43,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:43,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:47:43,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:43,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:47:43,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:43,670 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-05 06:47:43,872 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 06:47:44,178 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:47:44,393 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 06:47:44,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:44,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:44,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:44,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:44,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:47:44,897 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:44,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:44,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:44,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:44,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2021-06-05 06:47:44,907 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:45,218 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 110 [2021-06-05 06:47:45,219 INFO L628 ElimStorePlain]: treesize reduction 342, result has 42.2 percent of original size [2021-06-05 06:47:45,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:45,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:45,227 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:45,311 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:45,312 INFO L518 ElimStorePlain]: Eliminatee v_prenex_561 vanished before elimination [2021-06-05 06:47:45,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:45,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:47:45,320 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:45,396 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:45,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:47:45,403 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:45,472 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:45,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:47:45,480 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:45,546 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:45,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:45,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:47:45,554 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:45,613 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:45,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:45,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:45,619 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:45,672 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:45,676 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:47:45,676 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:668, output treesize:36 [2021-06-05 06:47:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:45,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248429084] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:45,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:45,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-05 06:47:45,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085771817] [2021-06-05 06:47:45,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:47:45,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:45,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:47:45,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:47:45,716 INFO L87 Difference]: Start difference. First operand 43796 states and 169138 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:46,097 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2021-06-05 06:47:46,463 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2021-06-05 06:47:46,861 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 06:47:47,090 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 76 [2021-06-05 06:47:47,368 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 58 [2021-06-05 06:47:48,007 WARN L205 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 100 [2021-06-05 06:47:48,704 WARN L205 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 79 [2021-06-05 06:47:48,911 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-06-05 06:47:49,614 WARN L205 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 111 [2021-06-05 06:47:49,971 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 104 [2021-06-05 06:47:50,361 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 105 [2021-06-05 06:47:51,257 WARN L205 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 157 [2021-06-05 06:47:51,583 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 06:47:51,956 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2021-06-05 06:47:52,248 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2021-06-05 06:47:52,689 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2021-06-05 06:47:52,980 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2021-06-05 06:47:53,240 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2021-06-05 06:47:53,625 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2021-06-05 06:47:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:53,842 INFO L93 Difference]: Finished difference Result 53704 states and 203394 transitions. [2021-06-05 06:47:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:47:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:47:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:53,983 INFO L225 Difference]: With dead ends: 53704 [2021-06-05 06:47:53,983 INFO L226 Difference]: Without dead ends: 53629 [2021-06-05 06:47:53,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 9151.1ms TimeCoverageRelationStatistics Valid=421, Invalid=1835, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:47:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53629 states. [2021-06-05 06:47:54,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53629 to 43931. [2021-06-05 06:47:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43931 states, 43930 states have (on average 3.8612110175278853) internal successors, (169623), 43930 states have internal predecessors, (169623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43931 states to 43931 states and 169623 transitions. [2021-06-05 06:47:55,023 INFO L78 Accepts]: Start accepts. Automaton has 43931 states and 169623 transitions. Word has length 30 [2021-06-05 06:47:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:55,023 INFO L482 AbstractCegarLoop]: Abstraction has 43931 states and 169623 transitions. [2021-06-05 06:47:55,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand 43931 states and 169623 transitions. [2021-06-05 06:47:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:47:55,092 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:55,092 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:55,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4146,251 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:55,292 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:55,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:55,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1272822955, now seen corresponding path program 171 times [2021-06-05 06:47:55,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:55,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133453490] [2021-06-05 06:47:55,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:55,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:55,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133453490] [2021-06-05 06:47:55,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133453490] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:55,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493250625] [2021-06-05 06:47:55,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:56,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:47:56,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:56,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 06:47:56,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:56,373 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-06-05 06:47:56,703 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:47:57,209 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2021-06-05 06:47:57,779 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 06:47:58,057 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:47:58,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 44 [2021-06-05 06:47:58,062 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:59,554 WARN L205 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 354 DAG size of output: 338 [2021-06-05 06:47:59,555 INFO L628 ElimStorePlain]: treesize reduction 310, result has 77.1 percent of original size [2021-06-05 06:47:59,618 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:47:59,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 43 [2021-06-05 06:47:59,619 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:00,196 WARN L205 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2021-06-05 06:48:00,197 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:00,272 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:48:00,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 55 [2021-06-05 06:48:00,294 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:01,452 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 338 DAG size of output: 333 [2021-06-05 06:48:01,453 INFO L628 ElimStorePlain]: treesize reduction 9, result has 99.1 percent of original size [2021-06-05 06:48:01,531 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:48:01,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51 [2021-06-05 06:48:01,543 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:01,623 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:48:01,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55 [2021-06-05 06:48:01,631 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:02,680 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 344 DAG size of output: 330 [2021-06-05 06:48:02,681 INFO L628 ElimStorePlain]: treesize reduction 77, result has 92.5 percent of original size [2021-06-05 06:48:02,760 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:48:02,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-05 06:48:02,763 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:02,797 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:48:02,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:48:02,798 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:03,269 WARN L205 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2021-06-05 06:48:03,269 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:03,350 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:48:03,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 06:48:03,360 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:03,438 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:48:03,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-05 06:48:03,460 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:04,360 WARN L205 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 325 [2021-06-05 06:48:04,361 INFO L628 ElimStorePlain]: treesize reduction 68, result has 92.5 percent of original size [2021-06-05 06:48:04,425 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-05 06:48:04,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 39 [2021-06-05 06:48:04,427 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:04,488 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:48:04,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 47 [2021-06-05 06:48:04,491 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,309 WARN L205 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 324 [2021-06-05 06:48:05,310 INFO L628 ElimStorePlain]: treesize reduction 45, result has 94.6 percent of original size [2021-06-05 06:48:05,355 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:05,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 53 [2021-06-05 06:48:05,377 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,774 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2021-06-05 06:48:05,775 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:05,838 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:48:05,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-05 06:48:05,844 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:06,224 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2021-06-05 06:48:06,225 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:06,271 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:06,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 59 [2021-06-05 06:48:06,282 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:06,635 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2021-06-05 06:48:06,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:06,693 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:48:06,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 06:48:06,696 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,065 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2021-06-05 06:48:07,065 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:07,124 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:48:07,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-05 06:48:07,129 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,504 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2021-06-05 06:48:07,505 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:07,565 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:48:07,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 44 [2021-06-05 06:48:07,570 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,913 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2021-06-05 06:48:07,914 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:07,979 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:48:07,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55 [2021-06-05 06:48:07,991 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:08,647 WARN L205 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 279 [2021-06-05 06:48:08,647 INFO L628 ElimStorePlain]: treesize reduction 26, result has 96.2 percent of original size [2021-06-05 06:48:08,706 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:48:08,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 43 [2021-06-05 06:48:08,710 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:09,035 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2021-06-05 06:48:09,036 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:09,085 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:48:09,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 43 [2021-06-05 06:48:09,087 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:09,403 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2021-06-05 06:48:09,403 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:09,471 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 16 dim-1 vars, End of recursive call: and 20 xjuncts. [2021-06-05 06:48:09,471 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 48 variables, input treesize:1363, output treesize:913 [2021-06-05 06:48:09,759 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 35 [2021-06-05 06:48:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:09,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493250625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:09,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:09,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2021-06-05 06:48:09,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294395084] [2021-06-05 06:48:09,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 06:48:09,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:09,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 06:48:09,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:48:09,811 INFO L87 Difference]: Start difference. First operand 43931 states and 169623 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:10,229 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2021-06-05 06:48:10,508 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 06:48:10,959 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2021-06-05 06:48:11,238 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-06-05 06:48:11,427 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2021-06-05 06:48:11,612 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 50 [2021-06-05 06:48:11,873 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:48:12,080 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2021-06-05 06:48:12,370 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2021-06-05 06:48:13,175 WARN L205 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 123 [2021-06-05 06:48:13,690 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2021-06-05 06:48:13,870 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2021-06-05 06:48:14,854 WARN L205 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 109 [2021-06-05 06:48:15,776 WARN L205 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 148 [2021-06-05 06:48:16,726 WARN L205 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 134 [2021-06-05 06:48:17,185 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2021-06-05 06:48:17,652 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-05 06:48:17,968 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-06-05 06:48:18,167 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2021-06-05 06:48:18,660 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 107 [2021-06-05 06:48:20,264 WARN L205 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 186 DAG size of output: 173 [2021-06-05 06:48:20,819 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 40 [2021-06-05 06:48:21,073 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-06-05 06:48:21,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:21,249 INFO L93 Difference]: Finished difference Result 53564 states and 203065 transitions. [2021-06-05 06:48:21,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:48:21,250 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:48:21,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:21,388 INFO L225 Difference]: With dead ends: 53564 [2021-06-05 06:48:21,389 INFO L226 Difference]: Without dead ends: 53534 [2021-06-05 06:48:21,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 12157.3ms TimeCoverageRelationStatistics Valid=512, Invalid=3148, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:48:21,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53534 states. [2021-06-05 06:48:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53534 to 43946. [2021-06-05 06:48:22,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43946 states, 43945 states have (on average 3.8610080782796676) internal successors, (169672), 43945 states have internal predecessors, (169672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43946 states to 43946 states and 169672 transitions. [2021-06-05 06:48:22,555 INFO L78 Accepts]: Start accepts. Automaton has 43946 states and 169672 transitions. Word has length 30 [2021-06-05 06:48:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:22,555 INFO L482 AbstractCegarLoop]: Abstraction has 43946 states and 169672 transitions. [2021-06-05 06:48:22,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 43946 states and 169672 transitions. [2021-06-05 06:48:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:48:22,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:22,629 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:22,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4187 [2021-06-05 06:48:22,830 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:22,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:22,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1430715033, now seen corresponding path program 172 times [2021-06-05 06:48:22,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:22,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95593101] [2021-06-05 06:48:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:23,353 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2021-06-05 06:48:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:23,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:23,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95593101] [2021-06-05 06:48:23,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95593101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:23,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800305535] [2021-06-05 06:48:23,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:23,619 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:48:23,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:23,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:48:23,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:24,345 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-06-05 06:48:24,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-05 06:48:24,967 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:24,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:48:24,979 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:24,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:48:24,991 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:24,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:48:25,004 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:48:25,017 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:48:25,029 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:48:25,041 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:48:25,053 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:48:25,066 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:48:25,078 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 19 [2021-06-05 06:48:25,090 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:48:25,102 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:48:25,114 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-05 06:48:25,126 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:48:25,138 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-05 06:48:25,151 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:48:25,165 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:48:25,178 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-05 06:48:25,190 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:48:25,206 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:48:25,219 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:48:25,233 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 16 [2021-06-05 06:48:25,245 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:48:25,259 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:48:25,272 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:48:25,286 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:48:25,298 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-05 06:48:25,311 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:48:25,324 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 06:48:25,337 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:48:25,351 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-05 06:48:25,364 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2021-06-05 06:48:25,377 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:48:25,391 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:48:25,404 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:48:25,417 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:48:25,430 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-05 06:48:25,443 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2021-06-05 06:48:25,456 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 16 [2021-06-05 06:48:25,470 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-05 06:48:25,483 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 06:48:25,497 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:48:25,510 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:48:25,524 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 06:48:25,537 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:48:25,550 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2021-06-05 06:48:25,562 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:48:25,575 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-05 06:48:25,586 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-05 06:48:25,599 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:48:25,611 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:48:25,623 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:48:25,634 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:48:25,646 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:48:25,707 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:48:25,718 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:48:25,729 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:48:25,739 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:48:25,749 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:48:25,759 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:48:25,769 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-05 06:48:25,778 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:25,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 06:48:25,784 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,805 INFO L628 ElimStorePlain]: treesize reduction 52, result has 28.8 percent of original size [2021-06-05 06:48:25,806 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:48:25,806 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3328, output treesize:15 [2021-06-05 06:48:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:25,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800305535] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:25,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:25,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-05 06:48:25,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318282918] [2021-06-05 06:48:25,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:48:25,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:25,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:48:25,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:48:25,837 INFO L87 Difference]: Start difference. First operand 43946 states and 169672 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:26,397 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-06-05 06:48:26,626 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 64 [2021-06-05 06:48:26,986 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 67 [2021-06-05 06:48:27,447 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 70 [2021-06-05 06:48:27,788 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2021-06-05 06:48:28,111 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2021-06-05 06:48:28,491 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-06-05 06:48:28,918 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2021-06-05 06:48:29,279 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-06-05 06:48:29,420 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2021-06-05 06:48:29,793 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2021-06-05 06:48:30,124 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-06-05 06:48:30,254 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2021-06-05 06:48:30,526 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 71 [2021-06-05 06:48:30,787 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-06-05 06:48:31,086 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-06-05 06:48:31,382 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2021-06-05 06:48:31,544 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:48:31,717 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2021-06-05 06:48:32,181 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-06-05 06:48:32,350 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-05 06:48:32,656 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-06-05 06:48:32,991 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-06-05 06:48:33,177 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2021-06-05 06:48:33,353 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2021-06-05 06:48:33,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:33,929 INFO L93 Difference]: Finished difference Result 55841 states and 209381 transitions. [2021-06-05 06:48:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:48:33,930 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:48:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:34,068 INFO L225 Difference]: With dead ends: 55841 [2021-06-05 06:48:34,068 INFO L226 Difference]: Without dead ends: 55811 [2021-06-05 06:48:34,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 7954.4ms TimeCoverageRelationStatistics Valid=553, Invalid=3229, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:48:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55811 states. [2021-06-05 06:48:34,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55811 to 43990. [2021-06-05 06:48:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43990 states, 43989 states have (on average 3.860851576530496) internal successors, (169835), 43989 states have internal predecessors, (169835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43990 states to 43990 states and 169835 transitions. [2021-06-05 06:48:35,017 INFO L78 Accepts]: Start accepts. Automaton has 43990 states and 169835 transitions. Word has length 30 [2021-06-05 06:48:35,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:35,017 INFO L482 AbstractCegarLoop]: Abstraction has 43990 states and 169835 transitions. [2021-06-05 06:48:35,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 43990 states and 169835 transitions. [2021-06-05 06:48:35,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:48:35,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:35,086 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:35,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4349,253 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:35,288 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:35,289 INFO L82 PathProgramCache]: Analyzing trace with hash 924713707, now seen corresponding path program 173 times [2021-06-05 06:48:35,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:35,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582955091] [2021-06-05 06:48:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:35,529 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2021-06-05 06:48:35,907 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 06:48:36,059 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2021-06-05 06:48:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:36,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:36,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582955091] [2021-06-05 06:48:36,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582955091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:36,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614175818] [2021-06-05 06:48:36,148 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:36,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:48:36,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:36,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 06:48:36,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:36,463 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-06-05 06:48:36,669 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 06:48:36,947 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 06:48:37,360 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2021-06-05 06:48:37,974 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 06:48:38,421 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 170 [2021-06-05 06:48:38,771 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2021-06-05 06:48:39,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:48:39,058 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:48:39,079 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2021-06-05 06:48:39,101 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2021-06-05 06:48:39,118 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:48:39,139 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 16 [2021-06-05 06:48:39,160 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:48:39,176 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 16 [2021-06-05 06:48:39,189 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,433 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 108 [2021-06-05 06:48:39,434 INFO L628 ElimStorePlain]: treesize reduction 256, result has 50.7 percent of original size [2021-06-05 06:48:39,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:39,446 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:48:39,457 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:39,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:39,468 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:39,476 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,546 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:39,551 INFO L550 ElimStorePlain]: Start of recursive call 1: 34 dim-0 vars, 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:48:39,551 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 36 variables, input treesize:845, output treesize:36 [2021-06-05 06:48:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:39,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614175818] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:39,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:39,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2021-06-05 06:48:39,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406940321] [2021-06-05 06:48:39,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 06:48:39,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:39,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 06:48:39,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:48:39,609 INFO L87 Difference]: Start difference. First operand 43990 states and 169835 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:40,468 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2021-06-05 06:48:40,742 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 73 [2021-06-05 06:48:42,218 WARN L205 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 102 [2021-06-05 06:48:42,902 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 85 [2021-06-05 06:48:43,236 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 84 [2021-06-05 06:48:43,490 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-05 06:48:44,537 WARN L205 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2021-06-05 06:48:45,357 WARN L205 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 128 [2021-06-05 06:48:45,551 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2021-06-05 06:48:45,849 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 77 [2021-06-05 06:48:46,123 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2021-06-05 06:48:47,485 WARN L205 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 149 DAG size of output: 115 [2021-06-05 06:48:47,658 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:48:48,500 WARN L205 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2021-06-05 06:48:48,918 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 87 [2021-06-05 06:48:49,214 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-06-05 06:48:50,163 WARN L205 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 114 [2021-06-05 06:48:51,447 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 221 DAG size of output: 143 [2021-06-05 06:48:51,755 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-06-05 06:48:52,789 WARN L205 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 103 [2021-06-05 06:48:53,700 WARN L205 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 131 [2021-06-05 06:48:54,246 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2021-06-05 06:48:54,638 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 114 [2021-06-05 06:48:54,876 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 06:48:55,902 WARN L205 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 117 [2021-06-05 06:48:56,493 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 125 [2021-06-05 06:48:56,759 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-05 06:48:57,155 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 118 [2021-06-05 06:48:58,225 WARN L205 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2021-06-05 06:48:58,905 WARN L205 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 126 [2021-06-05 06:48:59,649 WARN L205 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 123 [2021-06-05 06:49:00,249 WARN L205 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 195 [2021-06-05 06:49:00,971 WARN L205 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 195 [2021-06-05 06:49:01,659 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 188 [2021-06-05 06:49:02,189 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 192 [2021-06-05 06:49:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:02,519 INFO L93 Difference]: Finished difference Result 69300 states and 257529 transitions. [2021-06-05 06:49:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:49:02,520 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:49:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:02,701 INFO L225 Difference]: With dead ends: 69300 [2021-06-05 06:49:02,702 INFO L226 Difference]: Without dead ends: 69270 [2021-06-05 06:49:02,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1709 ImplicationChecksByTransitivity, 22788.6ms TimeCoverageRelationStatistics Valid=668, Invalid=5184, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 06:49:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69270 states. [2021-06-05 06:49:03,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69270 to 44041. [2021-06-05 06:49:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44041 states, 44040 states have (on average 3.86030881017257) internal successors, (170008), 44040 states have internal predecessors, (170008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:03,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44041 states to 44041 states and 170008 transitions. [2021-06-05 06:49:03,859 INFO L78 Accepts]: Start accepts. Automaton has 44041 states and 170008 transitions. Word has length 30 [2021-06-05 06:49:03,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:03,860 INFO L482 AbstractCegarLoop]: Abstraction has 44041 states and 170008 transitions. [2021-06-05 06:49:03,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 44041 states and 170008 transitions. [2021-06-05 06:49:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:49:03,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:03,929 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:04,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4601,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:04,129 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:04,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:04,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1938529707, now seen corresponding path program 174 times [2021-06-05 06:49:04,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:04,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442954812] [2021-06-05 06:49:04,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:04,523 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-06-05 06:49:04,713 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2021-06-05 06:49:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:04,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:04,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442954812] [2021-06-05 06:49:04,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442954812] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:04,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603987818] [2021-06-05 06:49:04,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:04,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:49:04,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:04,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:49:04,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:05,191 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 06:49:05,375 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 06:49:05,810 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 06:49:07,087 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 186 DAG size of output: 138 [2021-06-05 06:49:07,756 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 99 [2021-06-05 06:49:07,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:07,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:07,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:07,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:07,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:49:07,862 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:07,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:07,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:07,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:07,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:49:07,871 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:08,321 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 114 [2021-06-05 06:49:08,321 INFO L628 ElimStorePlain]: treesize reduction 134, result has 68.8 percent of original size [2021-06-05 06:49:08,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:49:08,329 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:08,449 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:49:08,449 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:08,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:08,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:49:08,457 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:08,573 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 06:49:08,573 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:08,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:08,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:49:08,581 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:08,682 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:49:08,682 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:08,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:49:08,689 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:08,779 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:08,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:08,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:08,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:49:08,790 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:08,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:49:08,798 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:08,917 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-05 06:49:08,917 INFO L628 ElimStorePlain]: treesize reduction 16, result has 89.9 percent of original size [2021-06-05 06:49:08,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:08,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:49:08,924 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:08,978 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:08,982 INFO L550 ElimStorePlain]: Start of recursive call 1: 14 dim-0 vars, 7 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:49:08,982 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 21 variables, input treesize:502, output treesize:39 [2021-06-05 06:49:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:09,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603987818] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:09,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:09,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-05 06:49:09,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214708757] [2021-06-05 06:49:09,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:49:09,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:09,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:49:09,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:49:09,028 INFO L87 Difference]: Start difference. First operand 44041 states and 170008 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:09,474 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2021-06-05 06:49:09,832 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-06-05 06:49:10,130 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-06-05 06:49:10,306 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2021-06-05 06:49:10,487 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2021-06-05 06:49:10,730 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 58 [2021-06-05 06:49:10,894 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2021-06-05 06:49:11,579 WARN L205 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 85 [2021-06-05 06:49:12,337 WARN L205 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 79 [2021-06-05 06:49:12,508 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2021-06-05 06:49:13,566 WARN L205 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 128 [2021-06-05 06:49:14,576 WARN L205 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 129 [2021-06-05 06:49:14,720 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-06-05 06:49:15,355 WARN L205 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 90 [2021-06-05 06:49:16,510 WARN L205 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 164 DAG size of output: 127 [2021-06-05 06:49:17,627 WARN L205 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 126 [2021-06-05 06:49:17,899 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2021-06-05 06:49:18,047 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 52 [2021-06-05 06:49:18,379 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:49:19,138 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2021-06-05 06:49:19,332 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2021-06-05 06:49:19,707 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-06-05 06:49:19,932 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2021-06-05 06:49:20,810 WARN L205 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 126 [2021-06-05 06:49:21,043 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2021-06-05 06:49:21,253 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 39 [2021-06-05 06:49:21,461 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2021-06-05 06:49:21,641 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2021-06-05 06:49:21,894 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2021-06-05 06:49:22,070 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 41 [2021-06-05 06:49:22,260 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 32 [2021-06-05 06:49:22,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:22,447 INFO L93 Difference]: Finished difference Result 57596 states and 215241 transitions. [2021-06-05 06:49:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:49:22,448 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:49:22,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:22,594 INFO L225 Difference]: With dead ends: 57596 [2021-06-05 06:49:22,594 INFO L226 Difference]: Without dead ends: 57461 [2021-06-05 06:49:22,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 14917.7ms TimeCoverageRelationStatistics Valid=682, Invalid=2858, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:49:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57461 states. [2021-06-05 06:49:23,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57461 to 44285. [2021-06-05 06:49:23,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44285 states, 44284 states have (on average 3.85920422726041) internal successors, (170901), 44284 states have internal predecessors, (170901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:23,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44285 states to 44285 states and 170901 transitions. [2021-06-05 06:49:23,614 INFO L78 Accepts]: Start accepts. Automaton has 44285 states and 170901 transitions. Word has length 30 [2021-06-05 06:49:23,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:23,614 INFO L482 AbstractCegarLoop]: Abstraction has 44285 states and 170901 transitions. [2021-06-05 06:49:23,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand 44285 states and 170901 transitions. [2021-06-05 06:49:23,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:49:23,684 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:23,684 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:23,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4625,255 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:23,884 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:23,884 INFO L82 PathProgramCache]: Analyzing trace with hash -806056025, now seen corresponding path program 175 times [2021-06-05 06:49:23,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:23,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452984092] [2021-06-05 06:49:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:24,346 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-06-05 06:49:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:24,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:24,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452984092] [2021-06-05 06:49:24,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452984092] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:24,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858557014] [2021-06-05 06:49:24,532 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:24,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 06:49:24,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:24,945 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 57 [2021-06-05 06:49:26,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:26,248 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:26,264 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:26,277 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 22 [2021-06-05 06:49:26,296 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 22 [2021-06-05 06:49:26,310 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:26,325 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:26,340 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:26,356 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 22 [2021-06-05 06:49:26,371 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:49:26,387 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2021-06-05 06:49:26,402 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:49:26,417 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:49:26,431 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:26,447 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:26,462 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:49:26,493 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-05 06:49:26,510 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 06:49:26,529 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:49:26,547 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:49:26,565 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:49:26,582 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:49:26,599 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-05 06:49:26,617 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-05 06:49:26,634 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 19 [2021-06-05 06:49:26,652 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:26,668 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:49:26,685 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2021-06-05 06:49:26,701 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:49:26,717 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:26,732 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:26,752 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:26,766 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:49:26,780 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:26,794 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:49:26,809 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-06-05 06:49:26,823 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:26,840 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:26,856 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-05 06:49:26,871 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:49:26,885 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:49:26,899 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:49:26,913 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:26,928 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-06-05 06:49:26,942 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:49:26,957 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 22 [2021-06-05 06:49:26,971 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-06-05 06:49:26,985 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:26,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:26,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:26,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:49:26,998 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:27,011 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 22 [2021-06-05 06:49:27,025 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:49:27,039 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:49:27,054 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:49:27,074 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 19 [2021-06-05 06:49:27,088 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:27,101 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 06:49:27,114 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:49:27,127 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:27,140 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:27,153 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:49:27,165 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-05 06:49:27,176 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,282 INFO L244 Elim1Store]: Index analysis took 103 ms [2021-06-05 06:49:27,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:27,283 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:27,289 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,317 INFO L628 ElimStorePlain]: treesize reduction 103, result has 16.9 percent of original size [2021-06-05 06:49:27,318 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:49:27,318 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3424, output treesize:15 [2021-06-05 06:49:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:27,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858557014] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:27,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:27,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-05 06:49:27,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333677016] [2021-06-05 06:49:27,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:49:27,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:27,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:49:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:49:27,347 INFO L87 Difference]: Start difference. First operand 44285 states and 170901 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:28,269 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2021-06-05 06:49:28,626 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-06-05 06:49:29,021 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-06-05 06:49:29,547 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 77 [2021-06-05 06:49:29,809 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 88 [2021-06-05 06:49:30,151 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81 [2021-06-05 06:49:30,696 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 75 [2021-06-05 06:49:31,054 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 84 [2021-06-05 06:49:31,234 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2021-06-05 06:49:31,525 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2021-06-05 06:49:31,739 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2021-06-05 06:49:31,991 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 85 [2021-06-05 06:49:32,233 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-06-05 06:49:32,634 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2021-06-05 06:49:33,078 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2021-06-05 06:49:33,364 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-06-05 06:49:34,147 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2021-06-05 06:49:34,311 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2021-06-05 06:49:34,849 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2021-06-05 06:49:35,373 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-06-05 06:49:35,660 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 06:49:35,912 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-06-05 06:49:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:36,259 INFO L93 Difference]: Finished difference Result 63426 states and 236013 transitions. [2021-06-05 06:49:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 06:49:36,259 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:49:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:36,406 INFO L225 Difference]: With dead ends: 63426 [2021-06-05 06:49:36,406 INFO L226 Difference]: Without dead ends: 63396 [2021-06-05 06:49:36,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 8467.0ms TimeCoverageRelationStatistics Valid=936, Invalid=5870, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 06:49:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63396 states. [2021-06-05 06:49:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63396 to 44329. [2021-06-05 06:49:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44329 states, 44328 states have (on average 3.859389099440534) internal successors, (171079), 44328 states have internal predecessors, (171079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44329 states to 44329 states and 171079 transitions. [2021-06-05 06:49:37,449 INFO L78 Accepts]: Start accepts. Automaton has 44329 states and 171079 transitions. Word has length 30 [2021-06-05 06:49:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:37,450 INFO L482 AbstractCegarLoop]: Abstraction has 44329 states and 171079 transitions. [2021-06-05 06:49:37,450 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 44329 states and 171079 transitions. [2021-06-05 06:49:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:49:37,520 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:37,521 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:37,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4654,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:37,721 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:37,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1782374869, now seen corresponding path program 176 times [2021-06-05 06:49:37,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:37,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532746129] [2021-06-05 06:49:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:38,004 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-05 06:49:38,121 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-06-05 06:49:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:38,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:38,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532746129] [2021-06-05 06:49:38,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532746129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:38,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230686537] [2021-06-05 06:49:38,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:38,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:49:38,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:38,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:49:38,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:38,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,853 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:38,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:38,854 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:38,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,886 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 06:49:38,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 33 [2021-06-05 06:49:38,887 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:38,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,925 INFO L354 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2021-06-05 06:49:38,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 39 [2021-06-05 06:49:38,929 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:38,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,957 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:38,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:38,958 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:38,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,984 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:38,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:38,986 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:38,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:38,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,025 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:49:39,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2021-06-05 06:49:39,029 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,053 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:39,055 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,086 INFO L354 Elim1Store]: treesize reduction 23, result has 14.8 percent of original size [2021-06-05 06:49:39,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 29 [2021-06-05 06:49:39,088 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,111 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:39,112 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,152 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size [2021-06-05 06:49:39,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 28 [2021-06-05 06:49:39,153 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,190 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size [2021-06-05 06:49:39,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 31 [2021-06-05 06:49:39,191 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,230 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:49:39,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-05 06:49:39,234 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,259 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:39,260 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,287 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:39,287 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,316 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:39,317 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,343 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:49:39,343 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,370 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:39,371 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,399 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 1 [2021-06-05 06:49:39,399 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,427 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:39,428 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,456 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 1 [2021-06-05 06:49:39,456 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,482 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:39,483 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,509 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:39,510 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,534 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:39,535 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,562 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:39,563 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,590 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:39,590 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,617 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:39,619 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,656 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:39,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 42 [2021-06-05 06:49:39,663 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,700 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 06:49:39,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 30 [2021-06-05 06:49:39,702 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,728 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:39,729 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,756 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:49:39,757 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,784 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2021-06-05 06:49:39,785 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,809 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:39,810 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,838 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 1 [2021-06-05 06:49:39,838 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,873 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 06:49:39,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 28 [2021-06-05 06:49:39,875 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,902 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:39,904 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,931 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:39,932 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,959 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2021-06-05 06:49:39,960 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,985 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:39,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:39,986 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:39,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:39,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,010 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:40,011 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,035 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:40,036 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,060 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:40,061 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,088 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 1 [2021-06-05 06:49:40,089 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,114 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:40,115 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,141 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:40,142 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,169 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:40,170 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,198 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:40,199 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,231 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 1 [2021-06-05 06:49:40,232 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,264 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:40,265 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,294 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 1 [2021-06-05 06:49:40,294 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,323 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 1 [2021-06-05 06:49:40,324 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,351 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:49:40,353 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,379 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:49:40,381 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,404 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:49:40,404 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,428 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:40,429 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,454 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:40,454 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,476 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:49:40,477 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,501 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:40,501 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,525 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 1 [2021-06-05 06:49:40,525 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,549 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:49:40,550 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,579 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2021-06-05 06:49:40,579 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,607 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:40,608 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,632 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 1 [2021-06-05 06:49:40,633 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,655 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:40,655 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,666 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:40,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:40,667 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,748 INFO L628 ElimStorePlain]: treesize reduction 136, result has 37.3 percent of original size [2021-06-05 06:49:40,749 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:49:40,749 INFO L247 ElimStorePlain]: Needed 65 recursive calls to eliminate 1 variables, input treesize:3409, output treesize:81 [2021-06-05 06:49:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:40,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230686537] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:40,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:40,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-05 06:49:40,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041752177] [2021-06-05 06:49:40,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:49:40,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:40,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:49:40,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:49:40,852 INFO L87 Difference]: Start difference. First operand 44329 states and 171079 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:41,801 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-06-05 06:49:42,282 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-06-05 06:49:42,752 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2021-06-05 06:49:43,274 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2021-06-05 06:49:43,950 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2021-06-05 06:49:44,184 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-06-05 06:49:44,488 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-06-05 06:49:44,671 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2021-06-05 06:49:44,869 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2021-06-05 06:49:45,214 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-05 06:49:45,513 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2021-06-05 06:49:45,829 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 79 [2021-06-05 06:49:46,522 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2021-06-05 06:49:46,914 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2021-06-05 06:49:47,259 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2021-06-05 06:49:47,510 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2021-06-05 06:49:47,831 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-06-05 06:49:48,030 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2021-06-05 06:49:48,300 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2021-06-05 06:49:48,551 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2021-06-05 06:49:48,868 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2021-06-05 06:49:49,411 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2021-06-05 06:49:49,676 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2021-06-05 06:49:50,097 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2021-06-05 06:49:50,424 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2021-06-05 06:49:50,635 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2021-06-05 06:49:50,987 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 90 [2021-06-05 06:49:51,291 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 97 [2021-06-05 06:49:51,446 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-06-05 06:49:51,615 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-06-05 06:49:51,845 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-06-05 06:49:52,202 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2021-06-05 06:49:52,590 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 91 [2021-06-05 06:49:52,893 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-06-05 06:49:53,337 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 101 [2021-06-05 06:49:53,829 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 107 [2021-06-05 06:49:54,014 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-06-05 06:49:54,272 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2021-06-05 06:49:54,484 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-06-05 06:49:54,833 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2021-06-05 06:49:55,317 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2021-06-05 06:49:55,559 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2021-06-05 06:49:55,908 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2021-06-05 06:49:56,178 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2021-06-05 06:49:56,383 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:49:56,744 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2021-06-05 06:49:57,394 WARN L205 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 113 [2021-06-05 06:49:57,716 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2021-06-05 06:49:58,172 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2021-06-05 06:49:58,334 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2021-06-05 06:49:58,916 WARN L205 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 106 [2021-06-05 06:49:59,301 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2021-06-05 06:49:59,541 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2021-06-05 06:50:00,055 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2021-06-05 06:50:00,232 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 06:50:00,666 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 136 [2021-06-05 06:50:01,051 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2021-06-05 06:50:01,375 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 106 [2021-06-05 06:50:01,810 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2021-06-05 06:50:02,665 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 138 [2021-06-05 06:50:03,111 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2021-06-05 06:50:03,697 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2021-06-05 06:50:04,133 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2021-06-05 06:50:04,396 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2021-06-05 06:50:04,520 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 31 [2021-06-05 06:50:04,768 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 06:50:04,986 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 47 [2021-06-05 06:50:05,250 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:50:05,607 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2021-06-05 06:50:05,924 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-06-05 06:50:06,350 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 54 [2021-06-05 06:50:06,571 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2021-06-05 06:50:06,844 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 49 [2021-06-05 06:50:07,086 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 46 [2021-06-05 06:50:07,350 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 45 [2021-06-05 06:50:07,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:07,723 INFO L93 Difference]: Finished difference Result 77166 states and 282626 transitions. [2021-06-05 06:50:07,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2021-06-05 06:50:07,725 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:50:07,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:07,936 INFO L225 Difference]: With dead ends: 77166 [2021-06-05 06:50:07,936 INFO L226 Difference]: Without dead ends: 77094 [2021-06-05 06:50:07,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7346 ImplicationChecksByTransitivity, 24288.0ms TimeCoverageRelationStatistics Valid=1751, Invalid=17989, Unknown=0, NotChecked=0, Total=19740 [2021-06-05 06:50:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77094 states. [2021-06-05 06:50:09,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77094 to 44685. [2021-06-05 06:50:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44685 states, 44684 states have (on average 3.860375078327813) internal successors, (172497), 44684 states have internal predecessors, (172497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44685 states to 44685 states and 172497 transitions. [2021-06-05 06:50:09,311 INFO L78 Accepts]: Start accepts. Automaton has 44685 states and 172497 transitions. Word has length 30 [2021-06-05 06:50:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:09,311 INFO L482 AbstractCegarLoop]: Abstraction has 44685 states and 172497 transitions. [2021-06-05 06:50:09,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:09,311 INFO L276 IsEmpty]: Start isEmpty. Operand 44685 states and 172497 transitions. [2021-06-05 06:50:09,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:50:09,382 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:09,382 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:09,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5010 [2021-06-05 06:50:09,584 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:09,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:09,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1460513255, now seen corresponding path program 177 times [2021-06-05 06:50:09,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:09,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039284576] [2021-06-05 06:50:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:10,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:10,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039284576] [2021-06-05 06:50:10,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039284576] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:10,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146202041] [2021-06-05 06:50:10,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:10,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:50:10,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:10,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 06:50:10,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:20,587 WARN L205 SmtUtils]: Spent 9.71 s on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 06:50:21,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:21,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:21,154 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-05 06:50:21,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 39 [2021-06-05 06:50:21,156 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:21,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:21,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:21,273 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-06-05 06:50:21,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 45 [2021-06-05 06:50:21,277 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:27,046 WARN L205 SmtUtils]: Spent 5.77 s on a formula simplification. DAG size of input: 706 DAG size of output: 656 [2021-06-05 06:50:27,047 INFO L628 ElimStorePlain]: treesize reduction 979, result has 72.0 percent of original size [2021-06-05 06:50:27,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:27,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:27,193 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-05 06:50:27,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 36 [2021-06-05 06:50:27,195 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:27,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:27,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:27,343 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 06:50:27,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 54 [2021-06-05 06:50:27,349 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:31,775 WARN L205 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 653 DAG size of output: 651 [2021-06-05 06:50:31,777 INFO L628 ElimStorePlain]: treesize reduction 33, result has 98.7 percent of original size [2021-06-05 06:50:31,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:31,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:31,931 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 06:50:31,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 54 [2021-06-05 06:50:31,937 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:31,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:31,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:32,007 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:50:32,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 1 [2021-06-05 06:50:32,008 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:34,216 WARN L205 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 644 [2021-06-05 06:50:34,217 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:50:34,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:34,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:34,344 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:50:34,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 66 [2021-06-05 06:50:34,360 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:34,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:34,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:34,427 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:50:34,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 22 [2021-06-05 06:50:34,429 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:38,744 WARN L205 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 633 DAG size of output: 632 [2021-06-05 06:50:38,745 INFO L628 ElimStorePlain]: treesize reduction 21, result has 99.1 percent of original size [2021-06-05 06:50:38,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:38,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:38,829 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:50:38,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 60 [2021-06-05 06:50:38,839 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:40,780 WARN L205 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 620 [2021-06-05 06:50:40,781 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:50:40,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:40,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:40,880 INFO L354 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2021-06-05 06:50:40,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 06:50:40,884 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:42,852 WARN L205 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 611 [2021-06-05 06:50:42,852 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:50:42,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:42,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:42,940 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-05 06:50:42,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 36 [2021-06-05 06:50:42,942 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:44,956 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 603 [2021-06-05 06:50:44,956 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:50:44,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:44,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:45,044 INFO L354 Elim1Store]: treesize reduction 32, result has 28.9 percent of original size [2021-06-05 06:50:45,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 06:50:45,047 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:46,986 WARN L205 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 596 [2021-06-05 06:50:46,986 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:50:47,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:47,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:47,108 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:50:47,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 50 [2021-06-05 06:50:47,112 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:51,182 WARN L205 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 593 DAG size of output: 591 [2021-06-05 06:50:51,183 INFO L628 ElimStorePlain]: treesize reduction 13, result has 99.4 percent of original size [2021-06-05 06:50:51,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:51,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:51,261 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-05 06:50:51,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 36 [2021-06-05 06:50:51,263 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:53,025 WARN L205 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 582 [2021-06-05 06:50:53,026 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:50:53,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:53,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:53,116 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-06-05 06:50:53,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 42 [2021-06-05 06:50:53,120 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:54,870 WARN L205 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 572 [2021-06-05 06:50:54,870 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:50:54,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:54,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:54,980 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:50:54,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 69 [2021-06-05 06:50:54,995 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:55,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:55,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:55,053 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:50:55,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 1 [2021-06-05 06:50:55,053 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:58,516 WARN L205 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 571 DAG size of output: 568 [2021-06-05 06:50:58,517 INFO L628 ElimStorePlain]: treesize reduction 32, result has 98.5 percent of original size [2021-06-05 06:50:58,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:58,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:58,601 INFO L354 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2021-06-05 06:50:58,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 38 [2021-06-05 06:50:58,603 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:00,319 WARN L205 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 560 [2021-06-05 06:51:00,319 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:51:00,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:00,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:00,415 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:51:00,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 50 [2021-06-05 06:51:00,422 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:02,105 WARN L205 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 550 [2021-06-05 06:51:02,105 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:51:02,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:02,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:02,191 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-06-05 06:51:02,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 39 [2021-06-05 06:51:02,196 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:03,903 WARN L205 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 541 [2021-06-05 06:51:03,904 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:51:03,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:03,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:03,980 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-05 06:51:03,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 36 [2021-06-05 06:51:03,982 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:05,601 WARN L205 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 533 [2021-06-05 06:51:05,602 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:51:05,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:05,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:05,673 INFO L354 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2021-06-05 06:51:05,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 35 [2021-06-05 06:51:05,675 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:07,342 WARN L205 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 526 [2021-06-05 06:51:07,342 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:51:07,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:07,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:07,421 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-05 06:51:07,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 36 [2021-06-05 06:51:07,423 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:09,105 WARN L205 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 518 [2021-06-05 06:51:09,106 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:51:09,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:09,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:09,196 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-05 06:51:09,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 36 [2021-06-05 06:51:09,198 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:09,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:09,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:09,279 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-06-05 06:51:09,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 40 [2021-06-05 06:51:09,283 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:12,328 WARN L205 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 510 DAG size of output: 505 [2021-06-05 06:51:12,329 INFO L628 ElimStorePlain]: treesize reduction 48, result has 97.4 percent of original size [2021-06-05 06:51:12,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:12,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:12,421 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-05 06:51:12,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 36 [2021-06-05 06:51:12,423 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:12,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:12,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:12,514 INFO L354 Elim1Store]: treesize reduction 14, result has 68.9 percent of original size [2021-06-05 06:51:12,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 55 [2021-06-05 06:51:12,520 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:15,334 WARN L205 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 499 DAG size of output: 496 [2021-06-05 06:51:15,335 INFO L628 ElimStorePlain]: treesize reduction 46, result has 97.4 percent of original size [2021-06-05 06:51:15,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:15,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:15,425 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:51:15,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 50 [2021-06-05 06:51:15,429 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:16,811 WARN L205 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 489 [2021-06-05 06:51:16,812 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:51:16,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:16,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:16,894 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 06:51:16,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 54 [2021-06-05 06:51:16,903 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:18,259 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 480 [2021-06-05 06:51:18,260 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:51:18,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:18,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:18,357 INFO L354 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2021-06-05 06:51:18,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 38 [2021-06-05 06:51:18,359 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:18,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:18,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:18,431 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-06-05 06:51:18,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 42 [2021-06-05 06:51:18,434 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:20,996 WARN L205 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 471 DAG size of output: 470 [2021-06-05 06:51:20,997 INFO L628 ElimStorePlain]: treesize reduction 33, result has 98.0 percent of original size [2021-06-05 06:51:21,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:21,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:21,094 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:51:21,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 50 [2021-06-05 06:51:21,100 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:21,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:21,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:21,183 INFO L354 Elim1Store]: treesize reduction 14, result has 68.9 percent of original size [2021-06-05 06:51:21,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 55 [2021-06-05 06:51:21,189 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:23,515 WARN L205 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 461 DAG size of output: 460 [2021-06-05 06:51:23,516 INFO L628 ElimStorePlain]: treesize reduction 29, result has 98.1 percent of original size [2021-06-05 06:51:23,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:23,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:23,620 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 06:51:23,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 54 [2021-06-05 06:51:23,628 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:23,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:23,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:23,673 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:51:23,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 1 [2021-06-05 06:51:23,673 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:25,792 WARN L205 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 453 DAG size of output: 448 [2021-06-05 06:51:25,793 INFO L628 ElimStorePlain]: treesize reduction 24, result has 98.3 percent of original size [2021-06-05 06:51:25,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:25,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:25,882 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-05 06:51:25,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 36 [2021-06-05 06:51:25,884 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:25,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:25,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:25,961 INFO L354 Elim1Store]: treesize reduction 14, result has 68.9 percent of original size [2021-06-05 06:51:25,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 55 [2021-06-05 06:51:25,968 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:27,924 WARN L205 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 442 DAG size of output: 439 [2021-06-05 06:51:27,925 INFO L628 ElimStorePlain]: treesize reduction 55, result has 96.0 percent of original size [2021-06-05 06:51:27,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:27,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:28,027 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 06:51:28,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 54 [2021-06-05 06:51:28,035 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:51:28,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:28,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:51:28,081 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:51:28,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 1 [2021-06-05 06:51:28,081 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. Received shutdown request... [2021-06-05 06:51:28,871 WARN L222 SmtUtils]: Removed 7 from assertion stack [2021-06-05 06:51:29,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 258 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5078 [2021-06-05 06:51:29,072 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 06:51:29,073 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 06:51:29,075 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 06:51:29,075 INFO L202 PluginConnector]: Adding new model max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 06:51:29 BasicIcfg [2021-06-05 06:51:29,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 06:51:29,076 INFO L168 Benchmark]: Toolchain (without parser) took 808398.72 ms. Allocated memory was 383.8 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 363.3 MB in the beginning and 10.8 GB in the end (delta: -10.4 GB). Peak memory consumption was 5.0 GB. Max. memory is 16.0 GB. [2021-06-05 06:51:29,076 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 383.8 MB. Free memory was 364.5 MB in the beginning and 364.4 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 06:51:29,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.25 ms. Allocated memory is still 383.8 MB. Free memory was 363.2 MB in the beginning and 361.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 06:51:29,076 INFO L168 Benchmark]: Boogie Preprocessor took 12.35 ms. Allocated memory is still 383.8 MB. Free memory was 361.8 MB in the beginning and 360.8 MB in the end (delta: 995.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 06:51:29,076 INFO L168 Benchmark]: RCFGBuilder took 201.17 ms. Allocated memory is still 383.8 MB. Free memory was 360.7 MB in the beginning and 347.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 06:51:29,076 INFO L168 Benchmark]: TraceAbstraction took 808160.14 ms. Allocated memory was 383.8 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 347.4 MB in the beginning and 10.8 GB in the end (delta: -10.4 GB). Peak memory consumption was 5.0 GB. Max. memory is 16.0 GB. [2021-06-05 06:51:29,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 383.8 MB. Free memory was 364.5 MB in the beginning and 364.4 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.25 ms. Allocated memory is still 383.8 MB. Free memory was 363.2 MB in the beginning and 361.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.35 ms. Allocated memory is still 383.8 MB. Free memory was 361.8 MB in the beginning and 360.8 MB in the end (delta: 995.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 201.17 ms. Allocated memory is still 383.8 MB. Free memory was 360.7 MB in the beginning and 347.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 808160.14 ms. Allocated memory was 383.8 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 347.4 MB in the beginning and 10.8 GB in the end (delta: -10.4 GB). Peak memory consumption was 5.0 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 426 for 787ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 426 for 787ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 426 for 787ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 426 for 787ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 808075.7ms, OverallIterations: 260, TraceHistogramMax: 3, EmptinessCheckTime: 4826.8ms, AutomataDifference: 405943.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11965 SDtfs, 75677 SDslu, 93135 SDs, 0 SdLazy, 150895 SolverSat, 13745 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79380.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17058 GetRequests, 5447 SyntacticMatches, 250 SemanticMatches, 11361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202224 ImplicationChecksByTransitivity, 343677.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48550occurred in iteration=248, InterpolantAutomatonStates: 10128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 84162.3ms AutomataMinimizationTime, 259 MinimizatonAttempts, 1385975 StatesRemovedByMinimization, 259 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 728.4ms SsaConstructionTime, 2411.0ms SatisfiabilityAnalysisTime, 173539.0ms InterpolantComputationTime, 13778 NumberOfCodeBlocks, 13778 NumberOfCodeBlocksAsserted, 894 NumberOfCheckSat, 13263 ConstructedInterpolants, 193 QuantifiedInterpolants, 218508 SizeOfPredicates, 1049 NumberOfNonLiveVariables, 17406 ConjunctsInSsa, 3745 ConjunctsInUnsatCore, 515 InterpolantComputations, 3 PerfectInterpolantSequences, 1001/4406 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown