/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/chl/word-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 22:17:29,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 22:17:29,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 22:17:29,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 22:17:29,608 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 [2021-03-10 22:17:29,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 22:17:29,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 22:17:29,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 22:17:29,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 22:17:29,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 22:17:29,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 22:17:29,647 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 22:17:29,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 22:17:29,647 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 22:17:29,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 22:17:29,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 22:17:29,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 22:17:29,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 22:17:29,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 22:17:29,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 22:17:29,649 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 22:17:29,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 22:17:29,649 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 22:17:29,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 22:17:29,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 22:17:29,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 22:17:29,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 22:17:29,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 22:17:29,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 22:17:29,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 22:17:29,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 22:17:29,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 22:17:29,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 22:17:29,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 22:17:29,650 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 22:17:29,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 22:17:29,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 22:17:29,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 22:17:29,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 22:17:29,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 22:17:29,957 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-10 22:17:29,958 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-10 22:17:29,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl [2021-03-10 22:17:29,959 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl' [2021-03-10 22:17:30,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 22:17:30,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-10 22:17:30,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 22:17:30,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 22:17:30,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 22:17:30,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:29" (1/1) ... [2021-03-10 22:17:30,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:29" (1/1) ... [2021-03-10 22:17:30,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 22:17:30,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 22:17:30,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 22:17:30,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 22:17:30,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:29" (1/1) ... [2021-03-10 22:17:30,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:29" (1/1) ... [2021-03-10 22:17:30,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:29" (1/1) ... [2021-03-10 22:17:30,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:29" (1/1) ... [2021-03-10 22:17:30,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:29" (1/1) ... [2021-03-10 22:17:30,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:29" (1/1) ... [2021-03-10 22:17:30,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:29" (1/1) ... [2021-03-10 22:17:30,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 22:17:30,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 22:17:30,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 22:17:30,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 22:17:30,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:29" (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 [2021-03-10 22:17:30,109 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-10 22:17:30,109 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-10 22:17:30,109 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-10 22:17:30,109 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-10 22:17:30,109 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-10 22:17:30,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-10 22:17:30,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-10 22:17:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 22:17:30,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 22:17:30,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-10 22:17:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-10 22:17:30,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-10 22:17:30,112 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 22:17:30,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 22:17:30,519 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-03-10 22:17:30,521 INFO L202 PluginConnector]: Adding new model word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:17:30 BoogieIcfgContainer [2021-03-10 22:17:30,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 22:17:30,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 22:17:30,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 22:17:30,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 22:17:30,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:29" (1/2) ... [2021-03-10 22:17:30,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e48d32b and model type word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 10:17:30, skipping insertion in model container [2021-03-10 22:17:30,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:17:30" (2/2) ... [2021-03-10 22:17:30,533 INFO L111 eAbstractionObserver]: Analyzing ICFG word-trans.wvr.bpl [2021-03-10 22:17:30,538 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 22:17:30,539 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 22:17:30,543 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 22:17:30,543 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 22:17:30,591 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-10 22:17:30,605 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 22:17:30,632 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 22:17:30,633 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 22:17:30,633 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 22:17:30,633 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 22:17:30,633 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 22:17:30,633 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 22:17:30,633 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 22:17:30,634 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 22:17:30,643 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 80 flow [2021-03-10 22:17:30,666 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 110 states, 108 states have (on average 3.4814814814814814) internal successors, (376), 109 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:30,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 3.4814814814814814) internal successors, (376), 109 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:30,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 22:17:30,679 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:30,679 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:30,680 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:30,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:30,683 INFO L82 PathProgramCache]: Analyzing trace with hash -200100504, now seen corresponding path program 1 times [2021-03-10 22:17:30,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:30,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582481778] [2021-03-10 22:17:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:30,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582481778] [2021-03-10 22:17:30,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:30,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:30,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800063392] [2021-03-10 22:17:30,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:30,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:30,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:30,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:30,944 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 3.4814814814814814) internal successors, (376), 109 states have internal predecessors, (376), 0 states have call successors, (0), 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 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:31,094 INFO L93 Difference]: Finished difference Result 230 states and 687 transitions. [2021-03-10 22:17:31,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:31,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-03-10 22:17:31,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:31,113 INFO L225 Difference]: With dead ends: 230 [2021-03-10 22:17:31,114 INFO L226 Difference]: Without dead ends: 215 [2021-03-10 22:17:31,116 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-03-10 22:17:31,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 126. [2021-03-10 22:17:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 3.368) internal successors, (421), 125 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 421 transitions. [2021-03-10 22:17:31,178 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 421 transitions. Word has length 14 [2021-03-10 22:17:31,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:31,179 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 421 transitions. [2021-03-10 22:17:31,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 421 transitions. [2021-03-10 22:17:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 22:17:31,182 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:31,182 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:31,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 22:17:31,182 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:31,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:31,185 INFO L82 PathProgramCache]: Analyzing trace with hash -393107442, now seen corresponding path program 2 times [2021-03-10 22:17:31,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:31,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93896841] [2021-03-10 22:17:31,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:31,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:31,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93896841] [2021-03-10 22:17:31,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:31,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:31,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244703594] [2021-03-10 22:17:31,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:31,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:31,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:31,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:31,309 INFO L87 Difference]: Start difference. First operand 126 states and 421 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:31,416 INFO L93 Difference]: Finished difference Result 257 states and 779 transitions. [2021-03-10 22:17:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:31,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-03-10 22:17:31,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:31,421 INFO L225 Difference]: With dead ends: 257 [2021-03-10 22:17:31,421 INFO L226 Difference]: Without dead ends: 242 [2021-03-10 22:17:31,422 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:31,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-03-10 22:17:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 132. [2021-03-10 22:17:31,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 3.312977099236641) internal successors, (434), 131 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 434 transitions. [2021-03-10 22:17:31,446 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 434 transitions. Word has length 14 [2021-03-10 22:17:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:31,446 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 434 transitions. [2021-03-10 22:17:31,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,447 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 434 transitions. [2021-03-10 22:17:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 22:17:31,451 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:31,451 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:31,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 22:17:31,452 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:31,453 INFO L82 PathProgramCache]: Analyzing trace with hash 463457742, now seen corresponding path program 3 times [2021-03-10 22:17:31,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:31,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066868134] [2021-03-10 22:17:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:31,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066868134] [2021-03-10 22:17:31,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:31,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:31,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586182414] [2021-03-10 22:17:31,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:31,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:31,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:31,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:31,542 INFO L87 Difference]: Start difference. First operand 132 states and 434 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:31,627 INFO L93 Difference]: Finished difference Result 244 states and 710 transitions. [2021-03-10 22:17:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:31,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-03-10 22:17:31,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:31,629 INFO L225 Difference]: With dead ends: 244 [2021-03-10 22:17:31,629 INFO L226 Difference]: Without dead ends: 229 [2021-03-10 22:17:31,630 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:31,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-03-10 22:17:31,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 136. [2021-03-10 22:17:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 3.3333333333333335) internal successors, (450), 135 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 450 transitions. [2021-03-10 22:17:31,643 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 450 transitions. Word has length 14 [2021-03-10 22:17:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:31,644 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 450 transitions. [2021-03-10 22:17:31,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,649 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 450 transitions. [2021-03-10 22:17:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 22:17:31,651 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:31,651 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:31,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 22:17:31,652 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:31,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:31,652 INFO L82 PathProgramCache]: Analyzing trace with hash 332136738, now seen corresponding path program 4 times [2021-03-10 22:17:31,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:31,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347357866] [2021-03-10 22:17:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:31,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347357866] [2021-03-10 22:17:31,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:31,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:31,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772031992] [2021-03-10 22:17:31,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:31,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:31,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:31,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:31,778 INFO L87 Difference]: Start difference. First operand 136 states and 450 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:31,864 INFO L93 Difference]: Finished difference Result 251 states and 743 transitions. [2021-03-10 22:17:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:31,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-03-10 22:17:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:31,866 INFO L225 Difference]: With dead ends: 251 [2021-03-10 22:17:31,866 INFO L226 Difference]: Without dead ends: 236 [2021-03-10 22:17:31,866 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:31,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-03-10 22:17:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 140. [2021-03-10 22:17:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 3.2949640287769784) internal successors, (458), 139 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 458 transitions. [2021-03-10 22:17:31,872 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 458 transitions. Word has length 14 [2021-03-10 22:17:31,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:31,872 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 458 transitions. [2021-03-10 22:17:31,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:31,872 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 458 transitions. [2021-03-10 22:17:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 22:17:31,873 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:31,873 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:31,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 22:17:31,873 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:31,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:31,874 INFO L82 PathProgramCache]: Analyzing trace with hash -515835448, now seen corresponding path program 5 times [2021-03-10 22:17:31,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:31,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488223013] [2021-03-10 22:17:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:31,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488223013] [2021-03-10 22:17:31,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:31,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:31,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123163864] [2021-03-10 22:17:31,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:31,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:31,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:31,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:31,944 INFO L87 Difference]: Start difference. First operand 140 states and 458 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:32,037 INFO L93 Difference]: Finished difference Result 279 states and 867 transitions. [2021-03-10 22:17:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:32,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-03-10 22:17:32,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:32,040 INFO L225 Difference]: With dead ends: 279 [2021-03-10 22:17:32,040 INFO L226 Difference]: Without dead ends: 264 [2021-03-10 22:17:32,040 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:32,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-03-10 22:17:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 142. [2021-03-10 22:17:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.3120567375886525) internal successors, (467), 141 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 467 transitions. [2021-03-10 22:17:32,048 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 467 transitions. Word has length 14 [2021-03-10 22:17:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:32,048 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 467 transitions. [2021-03-10 22:17:32,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 467 transitions. [2021-03-10 22:17:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 22:17:32,048 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:32,049 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:32,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 22:17:32,049 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:32,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:32,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1214544498, now seen corresponding path program 6 times [2021-03-10 22:17:32,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:32,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100782088] [2021-03-10 22:17:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:32,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100782088] [2021-03-10 22:17:32,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:32,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:32,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802975856] [2021-03-10 22:17:32,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:32,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:32,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:32,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:32,117 INFO L87 Difference]: Start difference. First operand 142 states and 467 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:32,205 INFO L93 Difference]: Finished difference Result 270 states and 831 transitions. [2021-03-10 22:17:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:32,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-03-10 22:17:32,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:32,207 INFO L225 Difference]: With dead ends: 270 [2021-03-10 22:17:32,207 INFO L226 Difference]: Without dead ends: 255 [2021-03-10 22:17:32,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:32,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-03-10 22:17:32,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 142. [2021-03-10 22:17:32,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.3120567375886525) internal successors, (467), 141 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 467 transitions. [2021-03-10 22:17:32,213 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 467 transitions. Word has length 14 [2021-03-10 22:17:32,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:32,213 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 467 transitions. [2021-03-10 22:17:32,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 467 transitions. [2021-03-10 22:17:32,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:32,214 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:32,214 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:32,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 22:17:32,215 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:32,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1927039172, now seen corresponding path program 1 times [2021-03-10 22:17:32,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:32,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090120391] [2021-03-10 22:17:32,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:32,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090120391] [2021-03-10 22:17:32,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:32,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:32,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194660060] [2021-03-10 22:17:32,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:32,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:32,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:32,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:32,294 INFO L87 Difference]: Start difference. First operand 142 states and 467 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:32,367 INFO L93 Difference]: Finished difference Result 280 states and 843 transitions. [2021-03-10 22:17:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:32,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:32,369 INFO L225 Difference]: With dead ends: 280 [2021-03-10 22:17:32,369 INFO L226 Difference]: Without dead ends: 259 [2021-03-10 22:17:32,370 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:32,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-03-10 22:17:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 147. [2021-03-10 22:17:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 3.3219178082191783) internal successors, (485), 146 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 485 transitions. [2021-03-10 22:17:32,377 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 485 transitions. Word has length 15 [2021-03-10 22:17:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:32,377 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 485 transitions. [2021-03-10 22:17:32,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 485 transitions. [2021-03-10 22:17:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:32,378 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:32,378 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:32,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 22:17:32,378 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:32,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:32,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1938853291, now seen corresponding path program 1 times [2021-03-10 22:17:32,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:32,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115199505] [2021-03-10 22:17:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:32,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115199505] [2021-03-10 22:17:32,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:32,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:32,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13356003] [2021-03-10 22:17:32,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:32,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:32,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:32,460 INFO L87 Difference]: Start difference. First operand 147 states and 485 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:32,527 INFO L93 Difference]: Finished difference Result 262 states and 767 transitions. [2021-03-10 22:17:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:32,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:32,529 INFO L225 Difference]: With dead ends: 262 [2021-03-10 22:17:32,529 INFO L226 Difference]: Without dead ends: 229 [2021-03-10 22:17:32,529 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-03-10 22:17:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 147. [2021-03-10 22:17:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 3.287671232876712) internal successors, (480), 146 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 480 transitions. [2021-03-10 22:17:32,535 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 480 transitions. Word has length 15 [2021-03-10 22:17:32,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:32,536 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 480 transitions. [2021-03-10 22:17:32,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 480 transitions. [2021-03-10 22:17:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:32,537 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:32,537 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:32,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 22:17:32,537 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:32,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:32,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1727583463, now seen corresponding path program 2 times [2021-03-10 22:17:32,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:32,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270801858] [2021-03-10 22:17:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:32,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270801858] [2021-03-10 22:17:32,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:32,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:32,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885862403] [2021-03-10 22:17:32,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:32,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:32,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:32,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:32,605 INFO L87 Difference]: Start difference. First operand 147 states and 480 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:32,681 INFO L93 Difference]: Finished difference Result 278 states and 838 transitions. [2021-03-10 22:17:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:32,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:32,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:32,683 INFO L225 Difference]: With dead ends: 278 [2021-03-10 22:17:32,683 INFO L226 Difference]: Without dead ends: 256 [2021-03-10 22:17:32,684 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-03-10 22:17:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 150. [2021-03-10 22:17:32,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 3.295302013422819) internal successors, (491), 149 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 491 transitions. [2021-03-10 22:17:32,691 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 491 transitions. Word has length 15 [2021-03-10 22:17:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:32,692 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 491 transitions. [2021-03-10 22:17:32,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 491 transitions. [2021-03-10 22:17:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:32,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:32,693 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:32,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 22:17:32,693 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:32,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:32,693 INFO L82 PathProgramCache]: Analyzing trace with hash -258187012, now seen corresponding path program 2 times [2021-03-10 22:17:32,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:32,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079933124] [2021-03-10 22:17:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:32,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079933124] [2021-03-10 22:17:32,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:32,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:32,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219642297] [2021-03-10 22:17:32,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:32,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:32,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:32,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:32,753 INFO L87 Difference]: Start difference. First operand 150 states and 491 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:32,828 INFO L93 Difference]: Finished difference Result 281 states and 840 transitions. [2021-03-10 22:17:32,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:32,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:32,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:32,831 INFO L225 Difference]: With dead ends: 281 [2021-03-10 22:17:32,832 INFO L226 Difference]: Without dead ends: 254 [2021-03-10 22:17:32,832 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:32,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-03-10 22:17:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 150. [2021-03-10 22:17:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 3.2751677852348995) internal successors, (488), 149 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 488 transitions. [2021-03-10 22:17:32,838 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 488 transitions. Word has length 15 [2021-03-10 22:17:32,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:32,838 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 488 transitions. [2021-03-10 22:17:32,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 488 transitions. [2021-03-10 22:17:32,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:32,839 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:32,839 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:32,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 22:17:32,839 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:32,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1713787741, now seen corresponding path program 1 times [2021-03-10 22:17:32,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:32,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073074318] [2021-03-10 22:17:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:32,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073074318] [2021-03-10 22:17:32,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:32,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:32,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580453408] [2021-03-10 22:17:32,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:32,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:32,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:32,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:32,886 INFO L87 Difference]: Start difference. First operand 150 states and 488 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:32,955 INFO L93 Difference]: Finished difference Result 281 states and 835 transitions. [2021-03-10 22:17:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:32,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:32,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:32,957 INFO L225 Difference]: With dead ends: 281 [2021-03-10 22:17:32,957 INFO L226 Difference]: Without dead ends: 262 [2021-03-10 22:17:32,957 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-03-10 22:17:32,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 154. [2021-03-10 22:17:32,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 3.281045751633987) internal successors, (502), 153 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 502 transitions. [2021-03-10 22:17:32,980 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 502 transitions. Word has length 15 [2021-03-10 22:17:32,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:32,981 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 502 transitions. [2021-03-10 22:17:32,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:32,981 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 502 transitions. [2021-03-10 22:17:32,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:32,981 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:32,981 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:32,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-10 22:17:32,982 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:32,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:32,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1520780803, now seen corresponding path program 2 times [2021-03-10 22:17:32,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:32,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712816779] [2021-03-10 22:17:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:33,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712816779] [2021-03-10 22:17:33,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:33,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:33,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015732419] [2021-03-10 22:17:33,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:33,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:33,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:33,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:33,024 INFO L87 Difference]: Start difference. First operand 154 states and 502 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:33,104 INFO L93 Difference]: Finished difference Result 373 states and 1108 transitions. [2021-03-10 22:17:33,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:17:33,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:33,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:33,108 INFO L225 Difference]: With dead ends: 373 [2021-03-10 22:17:33,108 INFO L226 Difference]: Without dead ends: 354 [2021-03-10 22:17:33,109 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-03-10 22:17:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 156. [2021-03-10 22:17:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2838709677419353) internal successors, (509), 155 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 509 transitions. [2021-03-10 22:17:33,116 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 509 transitions. Word has length 15 [2021-03-10 22:17:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:33,116 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 509 transitions. [2021-03-10 22:17:33,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 509 transitions. [2021-03-10 22:17:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:33,117 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:33,117 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:33,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-10 22:17:33,117 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:33,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:33,118 INFO L82 PathProgramCache]: Analyzing trace with hash -473139912, now seen corresponding path program 3 times [2021-03-10 22:17:33,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:33,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216869820] [2021-03-10 22:17:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:33,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216869820] [2021-03-10 22:17:33,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:33,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:33,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540436837] [2021-03-10 22:17:33,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:33,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:33,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:33,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:33,159 INFO L87 Difference]: Start difference. First operand 156 states and 509 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:33,213 INFO L93 Difference]: Finished difference Result 298 states and 879 transitions. [2021-03-10 22:17:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:33,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:33,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:33,215 INFO L225 Difference]: With dead ends: 298 [2021-03-10 22:17:33,215 INFO L226 Difference]: Without dead ends: 277 [2021-03-10 22:17:33,215 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-03-10 22:17:33,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 156. [2021-03-10 22:17:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2838709677419353) internal successors, (509), 155 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 509 transitions. [2021-03-10 22:17:33,222 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 509 transitions. Word has length 15 [2021-03-10 22:17:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:33,223 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 509 transitions. [2021-03-10 22:17:33,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 509 transitions. [2021-03-10 22:17:33,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:33,223 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:33,223 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:33,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-10 22:17:33,224 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:33,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:33,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1293754188, now seen corresponding path program 4 times [2021-03-10 22:17:33,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:33,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965734027] [2021-03-10 22:17:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:33,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965734027] [2021-03-10 22:17:33,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:33,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:33,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797666503] [2021-03-10 22:17:33,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:33,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:33,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:33,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:33,252 INFO L87 Difference]: Start difference. First operand 156 states and 509 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:33,326 INFO L93 Difference]: Finished difference Result 353 states and 1040 transitions. [2021-03-10 22:17:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:17:33,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:33,331 INFO L225 Difference]: With dead ends: 353 [2021-03-10 22:17:33,331 INFO L226 Difference]: Without dead ends: 332 [2021-03-10 22:17:33,331 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:33,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-03-10 22:17:33,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 154. [2021-03-10 22:17:33,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 3.2679738562091503) internal successors, (500), 153 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 500 transitions. [2021-03-10 22:17:33,339 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 500 transitions. Word has length 15 [2021-03-10 22:17:33,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:33,339 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 500 transitions. [2021-03-10 22:17:33,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 500 transitions. [2021-03-10 22:17:33,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:33,340 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:33,340 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:33,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-10 22:17:33,340 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:33,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:33,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1451583151, now seen corresponding path program 3 times [2021-03-10 22:17:33,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:33,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10257056] [2021-03-10 22:17:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:33,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10257056] [2021-03-10 22:17:33,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:33,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:33,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845384433] [2021-03-10 22:17:33,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:33,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:33,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:33,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:33,393 INFO L87 Difference]: Start difference. First operand 154 states and 500 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:33,449 INFO L93 Difference]: Finished difference Result 281 states and 800 transitions. [2021-03-10 22:17:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:33,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:33,451 INFO L225 Difference]: With dead ends: 281 [2021-03-10 22:17:33,451 INFO L226 Difference]: Without dead ends: 248 [2021-03-10 22:17:33,453 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-03-10 22:17:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 158. [2021-03-10 22:17:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 3.261146496815287) internal successors, (512), 157 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 512 transitions. [2021-03-10 22:17:33,458 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 512 transitions. Word has length 15 [2021-03-10 22:17:33,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:33,459 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 512 transitions. [2021-03-10 22:17:33,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,459 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 512 transitions. [2021-03-10 22:17:33,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:33,460 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:33,460 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:33,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-10 22:17:33,460 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:33,460 INFO L82 PathProgramCache]: Analyzing trace with hash 372369077, now seen corresponding path program 3 times [2021-03-10 22:17:33,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:33,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391972532] [2021-03-10 22:17:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:33,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391972532] [2021-03-10 22:17:33,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:33,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:33,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574998981] [2021-03-10 22:17:33,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:33,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:33,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:33,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:33,511 INFO L87 Difference]: Start difference. First operand 158 states and 512 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:33,582 INFO L93 Difference]: Finished difference Result 282 states and 815 transitions. [2021-03-10 22:17:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:33,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:33,584 INFO L225 Difference]: With dead ends: 282 [2021-03-10 22:17:33,584 INFO L226 Difference]: Without dead ends: 263 [2021-03-10 22:17:33,585 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:33,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-03-10 22:17:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 158. [2021-03-10 22:17:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 3.261146496815287) internal successors, (512), 157 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 512 transitions. [2021-03-10 22:17:33,589 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 512 transitions. Word has length 15 [2021-03-10 22:17:33,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:33,590 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 512 transitions. [2021-03-10 22:17:33,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 512 transitions. [2021-03-10 22:17:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:33,590 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:33,590 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:33,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-10 22:17:33,591 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1827392437, now seen corresponding path program 4 times [2021-03-10 22:17:33,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:33,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79313298] [2021-03-10 22:17:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:33,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79313298] [2021-03-10 22:17:33,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:33,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:33,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82982705] [2021-03-10 22:17:33,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:33,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:33,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:33,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:33,646 INFO L87 Difference]: Start difference. First operand 158 states and 512 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:33,724 INFO L93 Difference]: Finished difference Result 273 states and 790 transitions. [2021-03-10 22:17:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:33,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:33,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:33,726 INFO L225 Difference]: With dead ends: 273 [2021-03-10 22:17:33,726 INFO L226 Difference]: Without dead ends: 251 [2021-03-10 22:17:33,727 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:33,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-03-10 22:17:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 160. [2021-03-10 22:17:33,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2641509433962264) internal successors, (519), 159 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 519 transitions. [2021-03-10 22:17:33,733 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 519 transitions. Word has length 15 [2021-03-10 22:17:33,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:33,733 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 519 transitions. [2021-03-10 22:17:33,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,733 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 519 transitions. [2021-03-10 22:17:33,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:33,734 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:33,734 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:33,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-10 22:17:33,734 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:33,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:33,734 INFO L82 PathProgramCache]: Analyzing trace with hash 384286855, now seen corresponding path program 4 times [2021-03-10 22:17:33,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:33,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966615491] [2021-03-10 22:17:33,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:33,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966615491] [2021-03-10 22:17:33,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:33,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:33,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435397006] [2021-03-10 22:17:33,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:33,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:33,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:33,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:33,784 INFO L87 Difference]: Start difference. First operand 160 states and 519 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:33,842 INFO L93 Difference]: Finished difference Result 254 states and 753 transitions. [2021-03-10 22:17:33,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:33,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:33,845 INFO L225 Difference]: With dead ends: 254 [2021-03-10 22:17:33,845 INFO L226 Difference]: Without dead ends: 231 [2021-03-10 22:17:33,847 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-03-10 22:17:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 160. [2021-03-10 22:17:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.251572327044025) internal successors, (517), 159 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 517 transitions. [2021-03-10 22:17:33,858 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 517 transitions. Word has length 15 [2021-03-10 22:17:33,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:33,858 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 517 transitions. [2021-03-10 22:17:33,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 517 transitions. [2021-03-10 22:17:33,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:33,859 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:33,859 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:33,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-10 22:17:33,859 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:33,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:33,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1496312779, now seen corresponding path program 5 times [2021-03-10 22:17:33,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:33,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289807013] [2021-03-10 22:17:33,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:33,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289807013] [2021-03-10 22:17:33,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:33,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:33,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677227932] [2021-03-10 22:17:33,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:33,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:33,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:33,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:33,898 INFO L87 Difference]: Start difference. First operand 160 states and 517 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:33,953 INFO L93 Difference]: Finished difference Result 286 states and 846 transitions. [2021-03-10 22:17:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:33,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:33,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:33,955 INFO L225 Difference]: With dead ends: 286 [2021-03-10 22:17:33,955 INFO L226 Difference]: Without dead ends: 264 [2021-03-10 22:17:33,955 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:33,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-03-10 22:17:33,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 160. [2021-03-10 22:17:33,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.251572327044025) internal successors, (517), 159 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 517 transitions. [2021-03-10 22:17:33,963 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 517 transitions. Word has length 15 [2021-03-10 22:17:33,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:33,964 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 517 transitions. [2021-03-10 22:17:33,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:33,964 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 517 transitions. [2021-03-10 22:17:33,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:33,964 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:33,964 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:33,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-10 22:17:33,965 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:33,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2099945467, now seen corresponding path program 6 times [2021-03-10 22:17:33,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:33,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931790034] [2021-03-10 22:17:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:33,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931790034] [2021-03-10 22:17:33,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:33,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:33,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243765480] [2021-03-10 22:17:33,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:33,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:33,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:33,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:33,997 INFO L87 Difference]: Start difference. First operand 160 states and 517 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,079 INFO L93 Difference]: Finished difference Result 277 states and 810 transitions. [2021-03-10 22:17:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:34,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:34,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,081 INFO L225 Difference]: With dead ends: 277 [2021-03-10 22:17:34,081 INFO L226 Difference]: Without dead ends: 255 [2021-03-10 22:17:34,081 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:34,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-03-10 22:17:34,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 158. [2021-03-10 22:17:34,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 3.2356687898089174) internal successors, (508), 157 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 508 transitions. [2021-03-10 22:17:34,087 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 508 transitions. Word has length 15 [2021-03-10 22:17:34,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,087 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 508 transitions. [2021-03-10 22:17:34,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 508 transitions. [2021-03-10 22:17:34,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:34,089 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,089 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-10 22:17:34,089 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,090 INFO L82 PathProgramCache]: Analyzing trace with hash 232212098, now seen corresponding path program 5 times [2021-03-10 22:17:34,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312871237] [2021-03-10 22:17:34,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312871237] [2021-03-10 22:17:34,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:34,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41950813] [2021-03-10 22:17:34,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:34,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:34,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,131 INFO L87 Difference]: Start difference. First operand 158 states and 508 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,192 INFO L93 Difference]: Finished difference Result 312 states and 947 transitions. [2021-03-10 22:17:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:34,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,194 INFO L225 Difference]: With dead ends: 312 [2021-03-10 22:17:34,194 INFO L226 Difference]: Without dead ends: 285 [2021-03-10 22:17:34,194 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-03-10 22:17:34,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 160. [2021-03-10 22:17:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.238993710691824) internal successors, (515), 159 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 515 transitions. [2021-03-10 22:17:34,200 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 515 transitions. Word has length 15 [2021-03-10 22:17:34,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,200 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 515 transitions. [2021-03-10 22:17:34,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 515 transitions. [2021-03-10 22:17:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:34,202 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,202 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-10 22:17:34,202 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1046340473, now seen corresponding path program 5 times [2021-03-10 22:17:34,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571481709] [2021-03-10 22:17:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571481709] [2021-03-10 22:17:34,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:34,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19937886] [2021-03-10 22:17:34,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:34,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:34,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,235 INFO L87 Difference]: Start difference. First operand 160 states and 515 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,316 INFO L93 Difference]: Finished difference Result 371 states and 1121 transitions. [2021-03-10 22:17:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:17:34,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:34,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,318 INFO L225 Difference]: With dead ends: 371 [2021-03-10 22:17:34,318 INFO L226 Difference]: Without dead ends: 352 [2021-03-10 22:17:34,319 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:34,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-03-10 22:17:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 160. [2021-03-10 22:17:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.238993710691824) internal successors, (515), 159 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 515 transitions. [2021-03-10 22:17:34,327 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 515 transitions. Word has length 15 [2021-03-10 22:17:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,327 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 515 transitions. [2021-03-10 22:17:34,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 515 transitions. [2021-03-10 22:17:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:34,328 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,328 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-10 22:17:34,328 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1131085214, now seen corresponding path program 6 times [2021-03-10 22:17:34,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996622628] [2021-03-10 22:17:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996622628] [2021-03-10 22:17:34,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:34,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877386623] [2021-03-10 22:17:34,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:34,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:34,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,365 INFO L87 Difference]: Start difference. First operand 160 states and 515 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,447 INFO L93 Difference]: Finished difference Result 377 states and 1137 transitions. [2021-03-10 22:17:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:17:34,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:34,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,450 INFO L225 Difference]: With dead ends: 377 [2021-03-10 22:17:34,450 INFO L226 Difference]: Without dead ends: 356 [2021-03-10 22:17:34,450 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:34,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-03-10 22:17:34,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 160. [2021-03-10 22:17:34,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.238993710691824) internal successors, (515), 159 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 515 transitions. [2021-03-10 22:17:34,458 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 515 transitions. Word has length 15 [2021-03-10 22:17:34,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,458 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 515 transitions. [2021-03-10 22:17:34,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 515 transitions. [2021-03-10 22:17:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 22:17:34,459 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,459 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-10 22:17:34,459 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,460 INFO L82 PathProgramCache]: Analyzing trace with hash -964122021, now seen corresponding path program 6 times [2021-03-10 22:17:34,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741935469] [2021-03-10 22:17:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741935469] [2021-03-10 22:17:34,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:17:34,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187994734] [2021-03-10 22:17:34,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 22:17:34,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 22:17:34,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,501 INFO L87 Difference]: Start difference. First operand 160 states and 515 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,562 INFO L93 Difference]: Finished difference Result 268 states and 825 transitions. [2021-03-10 22:17:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:34,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 22:17:34,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,563 INFO L225 Difference]: With dead ends: 268 [2021-03-10 22:17:34,564 INFO L226 Difference]: Without dead ends: 245 [2021-03-10 22:17:34,564 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:34,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-03-10 22:17:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 160. [2021-03-10 22:17:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2264150943396226) internal successors, (513), 159 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 513 transitions. [2021-03-10 22:17:34,569 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 513 transitions. Word has length 15 [2021-03-10 22:17:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,570 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 513 transitions. [2021-03-10 22:17:34,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 513 transitions. [2021-03-10 22:17:34,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 22:17:34,570 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,570 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-10 22:17:34,571 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,571 INFO L82 PathProgramCache]: Analyzing trace with hash 360622849, now seen corresponding path program 1 times [2021-03-10 22:17:34,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475371923] [2021-03-10 22:17:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475371923] [2021-03-10 22:17:34,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-10 22:17:34,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051813014] [2021-03-10 22:17:34,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-10 22:17:34,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-10 22:17:34,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-10 22:17:34,597 INFO L87 Difference]: Start difference. First operand 160 states and 513 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,624 INFO L93 Difference]: Finished difference Result 304 states and 846 transitions. [2021-03-10 22:17:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:34,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-10 22:17:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,625 INFO L225 Difference]: With dead ends: 304 [2021-03-10 22:17:34,625 INFO L226 Difference]: Without dead ends: 282 [2021-03-10 22:17:34,626 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-10 22:17:34,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 160. [2021-03-10 22:17:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.1823899371069184) internal successors, (506), 159 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 506 transitions. [2021-03-10 22:17:34,632 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 506 transitions. Word has length 16 [2021-03-10 22:17:34,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,632 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 506 transitions. [2021-03-10 22:17:34,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,632 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 506 transitions. [2021-03-10 22:17:34,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 22:17:34,632 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,633 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-10 22:17:34,633 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1058721603, now seen corresponding path program 2 times [2021-03-10 22:17:34,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563527468] [2021-03-10 22:17:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563527468] [2021-03-10 22:17:34,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-10 22:17:34,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500164267] [2021-03-10 22:17:34,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-10 22:17:34,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-10 22:17:34,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-10 22:17:34,653 INFO L87 Difference]: Start difference. First operand 160 states and 506 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,679 INFO L93 Difference]: Finished difference Result 298 states and 826 transitions. [2021-03-10 22:17:34,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:34,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-10 22:17:34,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,680 INFO L225 Difference]: With dead ends: 298 [2021-03-10 22:17:34,680 INFO L226 Difference]: Without dead ends: 276 [2021-03-10 22:17:34,680 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-03-10 22:17:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 153. [2021-03-10 22:17:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 3.223684210526316) internal successors, (490), 152 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 490 transitions. [2021-03-10 22:17:34,686 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 490 transitions. Word has length 16 [2021-03-10 22:17:34,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,686 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 490 transitions. [2021-03-10 22:17:34,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,686 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 490 transitions. [2021-03-10 22:17:34,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 22:17:34,686 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,686 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-10 22:17:34,687 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1568921575, now seen corresponding path program 1 times [2021-03-10 22:17:34,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033188924] [2021-03-10 22:17:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033188924] [2021-03-10 22:17:34,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-10 22:17:34,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257830430] [2021-03-10 22:17:34,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-10 22:17:34,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-10 22:17:34,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-10 22:17:34,704 INFO L87 Difference]: Start difference. First operand 153 states and 490 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,730 INFO L93 Difference]: Finished difference Result 267 states and 761 transitions. [2021-03-10 22:17:34,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:34,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-10 22:17:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,732 INFO L225 Difference]: With dead ends: 267 [2021-03-10 22:17:34,732 INFO L226 Difference]: Without dead ends: 267 [2021-03-10 22:17:34,732 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-03-10 22:17:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 145. [2021-03-10 22:17:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 3.2083333333333335) internal successors, (462), 144 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 462 transitions. [2021-03-10 22:17:34,736 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 462 transitions. Word has length 16 [2021-03-10 22:17:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,737 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 462 transitions. [2021-03-10 22:17:34,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 462 transitions. [2021-03-10 22:17:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 22:17:34,737 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,737 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-10 22:17:34,739 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1557107456, now seen corresponding path program 1 times [2021-03-10 22:17:34,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067998747] [2021-03-10 22:17:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067998747] [2021-03-10 22:17:34,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-10 22:17:34,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701001116] [2021-03-10 22:17:34,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-10 22:17:34,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-10 22:17:34,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-10 22:17:34,759 INFO L87 Difference]: Start difference. First operand 145 states and 462 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,777 INFO L93 Difference]: Finished difference Result 261 states and 729 transitions. [2021-03-10 22:17:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:34,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-10 22:17:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,778 INFO L225 Difference]: With dead ends: 261 [2021-03-10 22:17:34,779 INFO L226 Difference]: Without dead ends: 236 [2021-03-10 22:17:34,779 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-03-10 22:17:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 143. [2021-03-10 22:17:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 3.147887323943662) internal successors, (447), 142 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 447 transitions. [2021-03-10 22:17:34,783 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 447 transitions. Word has length 16 [2021-03-10 22:17:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,783 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 447 transitions. [2021-03-10 22:17:34,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,783 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 447 transitions. [2021-03-10 22:17:34,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 22:17:34,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-10 22:17:34,785 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1813140347, now seen corresponding path program 3 times [2021-03-10 22:17:34,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330958137] [2021-03-10 22:17:34,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330958137] [2021-03-10 22:17:34,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-10 22:17:34,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155563029] [2021-03-10 22:17:34,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-10 22:17:34,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-10 22:17:34,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-10 22:17:34,799 INFO L87 Difference]: Start difference. First operand 143 states and 447 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,816 INFO L93 Difference]: Finished difference Result 255 states and 710 transitions. [2021-03-10 22:17:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-10 22:17:34,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-10 22:17:34,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,818 INFO L225 Difference]: With dead ends: 255 [2021-03-10 22:17:34,818 INFO L226 Difference]: Without dead ends: 233 [2021-03-10 22:17:34,818 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-03-10 22:17:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 143. [2021-03-10 22:17:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 3.084507042253521) internal successors, (438), 142 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 438 transitions. [2021-03-10 22:17:34,822 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 438 transitions. Word has length 16 [2021-03-10 22:17:34,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,822 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 438 transitions. [2021-03-10 22:17:34,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,822 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 438 transitions. [2021-03-10 22:17:34,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 22:17:34,823 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,823 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-10 22:17:34,823 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1420564495, now seen corresponding path program 2 times [2021-03-10 22:17:34,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188508977] [2021-03-10 22:17:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188508977] [2021-03-10 22:17:34,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-10 22:17:34,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790655012] [2021-03-10 22:17:34,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-10 22:17:34,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-10 22:17:34,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-10 22:17:34,839 INFO L87 Difference]: Start difference. First operand 143 states and 438 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,859 INFO L93 Difference]: Finished difference Result 206 states and 573 transitions. [2021-03-10 22:17:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:17:34,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-10 22:17:34,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,860 INFO L225 Difference]: With dead ends: 206 [2021-03-10 22:17:34,860 INFO L226 Difference]: Without dead ends: 206 [2021-03-10 22:17:34,860 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-03-10 22:17:34,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 112. [2021-03-10 22:17:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.918918918918919) internal successors, (324), 111 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 324 transitions. [2021-03-10 22:17:34,864 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 324 transitions. Word has length 16 [2021-03-10 22:17:34,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,864 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 324 transitions. [2021-03-10 22:17:34,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 324 transitions. [2021-03-10 22:17:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 22:17:34,864 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,864 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-10 22:17:34,865 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1372165464, now seen corresponding path program 2 times [2021-03-10 22:17:34,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238097213] [2021-03-10 22:17:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238097213] [2021-03-10 22:17:34,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-10 22:17:34,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836221892] [2021-03-10 22:17:34,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-10 22:17:34,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-10 22:17:34,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-10 22:17:34,880 INFO L87 Difference]: Start difference. First operand 112 states and 324 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,892 INFO L93 Difference]: Finished difference Result 163 states and 436 transitions. [2021-03-10 22:17:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-10 22:17:34,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-10 22:17:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,893 INFO L225 Difference]: With dead ends: 163 [2021-03-10 22:17:34,893 INFO L226 Difference]: Without dead ends: 144 [2021-03-10 22:17:34,893 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-03-10 22:17:34,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 108. [2021-03-10 22:17:34,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.9345794392523366) internal successors, (314), 107 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) [2021-03-10 22:17:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 314 transitions. [2021-03-10 22:17:34,896 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 314 transitions. Word has length 16 [2021-03-10 22:17:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,896 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 314 transitions. [2021-03-10 22:17:34,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,897 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 314 transitions. [2021-03-10 22:17:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 22:17:34,897 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,897 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-10 22:17:34,897 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,897 INFO L82 PathProgramCache]: Analyzing trace with hash -97814091, now seen corresponding path program 4 times [2021-03-10 22:17:34,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296671552] [2021-03-10 22:17:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296671552] [2021-03-10 22:17:34,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-10 22:17:34,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792561969] [2021-03-10 22:17:34,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-10 22:17:34,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-10 22:17:34,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-10 22:17:34,911 INFO L87 Difference]: Start difference. First operand 108 states and 314 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:34,925 INFO L93 Difference]: Finished difference Result 123 states and 338 transitions. [2021-03-10 22:17:34,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-10 22:17:34,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-10 22:17:34,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:34,926 INFO L225 Difference]: With dead ends: 123 [2021-03-10 22:17:34,926 INFO L226 Difference]: Without dead ends: 108 [2021-03-10 22:17:34,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-10 22:17:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-03-10 22:17:34,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-03-10 22:17:34,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.878504672897196) internal successors, (308), 107 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 308 transitions. [2021-03-10 22:17:34,929 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 308 transitions. Word has length 16 [2021-03-10 22:17:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:34,929 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 308 transitions. [2021-03-10 22:17:34,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 308 transitions. [2021-03-10 22:17:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:34,929 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:34,930 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:34,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-10 22:17:34,930 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:34,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1361223606, now seen corresponding path program 1 times [2021-03-10 22:17:34,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:34,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690148550] [2021-03-10 22:17:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:34,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690148550] [2021-03-10 22:17:34,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:34,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:34,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132395917] [2021-03-10 22:17:34,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:34,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:34,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:34,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:34,975 INFO L87 Difference]: Start difference. First operand 108 states and 308 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:35,064 INFO L93 Difference]: Finished difference Result 265 states and 721 transitions. [2021-03-10 22:17:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:35,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:35,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:35,065 INFO L225 Difference]: With dead ends: 265 [2021-03-10 22:17:35,065 INFO L226 Difference]: Without dead ends: 250 [2021-03-10 22:17:35,068 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 70.7ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-03-10 22:17:35,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 141. [2021-03-10 22:17:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 2.7928571428571427) internal successors, (391), 140 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 391 transitions. [2021-03-10 22:17:35,072 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 391 transitions. Word has length 17 [2021-03-10 22:17:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:35,072 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 391 transitions. [2021-03-10 22:17:35,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,072 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 391 transitions. [2021-03-10 22:17:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:35,073 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:35,073 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:35,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-10 22:17:35,073 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:35,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:35,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1726190618, now seen corresponding path program 2 times [2021-03-10 22:17:35,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:35,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011268878] [2021-03-10 22:17:35,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:35,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011268878] [2021-03-10 22:17:35,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:35,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:35,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198209755] [2021-03-10 22:17:35,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:35,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:35,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:35,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:35,120 INFO L87 Difference]: Start difference. First operand 141 states and 391 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:35,229 INFO L93 Difference]: Finished difference Result 298 states and 795 transitions. [2021-03-10 22:17:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:35,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:35,231 INFO L225 Difference]: With dead ends: 298 [2021-03-10 22:17:35,231 INFO L226 Difference]: Without dead ends: 283 [2021-03-10 22:17:35,231 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 73.7ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-03-10 22:17:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 150. [2021-03-10 22:17:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.8053691275167787) internal successors, (418), 149 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2021-03-10 22:17:35,237 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2021-03-10 22:17:35,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:35,238 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2021-03-10 22:17:35,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2021-03-10 22:17:35,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:35,238 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:35,238 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:35,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-10 22:17:35,238 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:35,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:35,239 INFO L82 PathProgramCache]: Analyzing trace with hash 870056290, now seen corresponding path program 3 times [2021-03-10 22:17:35,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:35,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151229518] [2021-03-10 22:17:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:35,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151229518] [2021-03-10 22:17:35,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:35,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:35,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831813834] [2021-03-10 22:17:35,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:35,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:35,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:35,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:35,284 INFO L87 Difference]: Start difference. First operand 150 states and 418 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:35,405 INFO L93 Difference]: Finished difference Result 281 states and 763 transitions. [2021-03-10 22:17:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:35,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:35,406 INFO L225 Difference]: With dead ends: 281 [2021-03-10 22:17:35,406 INFO L226 Difference]: Without dead ends: 266 [2021-03-10 22:17:35,407 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-03-10 22:17:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 150. [2021-03-10 22:17:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.8053691275167787) internal successors, (418), 149 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2021-03-10 22:17:35,411 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2021-03-10 22:17:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:35,411 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2021-03-10 22:17:35,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2021-03-10 22:17:35,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:35,413 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:35,413 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:35,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-10 22:17:35,413 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:35,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:35,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2059322360, now seen corresponding path program 4 times [2021-03-10 22:17:35,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:35,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918381013] [2021-03-10 22:17:35,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:35,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918381013] [2021-03-10 22:17:35,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:35,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:35,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500487048] [2021-03-10 22:17:35,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:35,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:35,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:35,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:35,468 INFO L87 Difference]: Start difference. First operand 150 states and 418 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:35,563 INFO L93 Difference]: Finished difference Result 289 states and 784 transitions. [2021-03-10 22:17:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:35,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:35,564 INFO L225 Difference]: With dead ends: 289 [2021-03-10 22:17:35,565 INFO L226 Difference]: Without dead ends: 274 [2021-03-10 22:17:35,565 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-03-10 22:17:35,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 159. [2021-03-10 22:17:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.7974683544303796) internal successors, (442), 158 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2021-03-10 22:17:35,570 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2021-03-10 22:17:35,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:35,570 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2021-03-10 22:17:35,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,571 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2021-03-10 22:17:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:35,571 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:35,571 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:35,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-10 22:17:35,571 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:35,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2033546876, now seen corresponding path program 5 times [2021-03-10 22:17:35,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:35,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99168188] [2021-03-10 22:17:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:35,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99168188] [2021-03-10 22:17:35,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:35,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:35,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422566456] [2021-03-10 22:17:35,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:35,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:35,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:35,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:35,625 INFO L87 Difference]: Start difference. First operand 159 states and 442 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:35,744 INFO L93 Difference]: Finished difference Result 322 states and 859 transitions. [2021-03-10 22:17:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:35,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:35,746 INFO L225 Difference]: With dead ends: 322 [2021-03-10 22:17:35,746 INFO L226 Difference]: Without dead ends: 307 [2021-03-10 22:17:35,747 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-03-10 22:17:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 162. [2021-03-10 22:17:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.8322981366459627) internal successors, (456), 161 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 456 transitions. [2021-03-10 22:17:35,753 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 456 transitions. Word has length 17 [2021-03-10 22:17:35,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:35,753 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 456 transitions. [2021-03-10 22:17:35,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 456 transitions. [2021-03-10 22:17:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:35,754 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:35,754 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:35,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-10 22:17:35,754 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:35,755 INFO L82 PathProgramCache]: Analyzing trace with hash 334826488, now seen corresponding path program 6 times [2021-03-10 22:17:35,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:35,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713742235] [2021-03-10 22:17:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:35,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713742235] [2021-03-10 22:17:35,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:35,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:35,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762212494] [2021-03-10 22:17:35,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:35,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:35,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:35,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:35,801 INFO L87 Difference]: Start difference. First operand 162 states and 456 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:35,906 INFO L93 Difference]: Finished difference Result 299 states and 814 transitions. [2021-03-10 22:17:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:35,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:35,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:35,908 INFO L225 Difference]: With dead ends: 299 [2021-03-10 22:17:35,908 INFO L226 Difference]: Without dead ends: 284 [2021-03-10 22:17:35,908 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 72.7ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:35,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-03-10 22:17:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 159. [2021-03-10 22:17:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.7974683544303796) internal successors, (442), 158 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2021-03-10 22:17:35,912 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2021-03-10 22:17:35,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:35,913 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2021-03-10 22:17:35,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:35,913 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2021-03-10 22:17:35,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:35,913 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:35,913 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:35,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-10 22:17:35,913 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:35,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2035892590, now seen corresponding path program 7 times [2021-03-10 22:17:35,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:35,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987119207] [2021-03-10 22:17:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:35,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987119207] [2021-03-10 22:17:35,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:35,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:35,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084896984] [2021-03-10 22:17:35,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:35,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:35,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:35,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:35,957 INFO L87 Difference]: Start difference. First operand 159 states and 442 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:36,049 INFO L93 Difference]: Finished difference Result 389 states and 1040 transitions. [2021-03-10 22:17:36,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:36,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:36,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:36,051 INFO L225 Difference]: With dead ends: 389 [2021-03-10 22:17:36,051 INFO L226 Difference]: Without dead ends: 374 [2021-03-10 22:17:36,052 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-03-10 22:17:36,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 166. [2021-03-10 22:17:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.8484848484848486) internal successors, (470), 165 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 470 transitions. [2021-03-10 22:17:36,060 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 470 transitions. Word has length 17 [2021-03-10 22:17:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:36,060 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 470 transitions. [2021-03-10 22:17:36,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 470 transitions. [2021-03-10 22:17:36,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:36,060 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:36,060 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:36,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-10 22:17:36,061 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:36,061 INFO L82 PathProgramCache]: Analyzing trace with hash -828339518, now seen corresponding path program 8 times [2021-03-10 22:17:36,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:36,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675302381] [2021-03-10 22:17:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:36,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675302381] [2021-03-10 22:17:36,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:36,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:36,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216979313] [2021-03-10 22:17:36,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:36,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:36,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:36,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:36,115 INFO L87 Difference]: Start difference. First operand 166 states and 470 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:36,219 INFO L93 Difference]: Finished difference Result 398 states and 1066 transitions. [2021-03-10 22:17:36,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:36,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:36,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:36,221 INFO L225 Difference]: With dead ends: 398 [2021-03-10 22:17:36,221 INFO L226 Difference]: Without dead ends: 383 [2021-03-10 22:17:36,221 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-03-10 22:17:36,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 169. [2021-03-10 22:17:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.880952380952381) internal successors, (484), 168 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 484 transitions. [2021-03-10 22:17:36,226 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 484 transitions. Word has length 17 [2021-03-10 22:17:36,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:36,226 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 484 transitions. [2021-03-10 22:17:36,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,226 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 484 transitions. [2021-03-10 22:17:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:36,226 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:36,226 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:36,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-10 22:17:36,227 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:36,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1767907390, now seen corresponding path program 9 times [2021-03-10 22:17:36,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:36,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987487672] [2021-03-10 22:17:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:36,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:36,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987487672] [2021-03-10 22:17:36,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:36,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:36,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18677620] [2021-03-10 22:17:36,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:36,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:36,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:36,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:36,271 INFO L87 Difference]: Start difference. First operand 169 states and 484 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:36,370 INFO L93 Difference]: Finished difference Result 405 states and 1082 transitions. [2021-03-10 22:17:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:36,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:36,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:36,372 INFO L225 Difference]: With dead ends: 405 [2021-03-10 22:17:36,372 INFO L226 Difference]: Without dead ends: 390 [2021-03-10 22:17:36,372 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:36,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-03-10 22:17:36,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 161. [2021-03-10 22:17:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 2.825) internal successors, (452), 160 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 452 transitions. [2021-03-10 22:17:36,377 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 452 transitions. Word has length 17 [2021-03-10 22:17:36,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:36,377 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 452 transitions. [2021-03-10 22:17:36,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,377 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 452 transitions. [2021-03-10 22:17:36,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:36,378 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:36,378 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:36,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-10 22:17:36,378 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:36,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1043349262, now seen corresponding path program 10 times [2021-03-10 22:17:36,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:36,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332107459] [2021-03-10 22:17:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:36,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332107459] [2021-03-10 22:17:36,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:36,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:36,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104536989] [2021-03-10 22:17:36,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:36,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:36,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:36,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:36,421 INFO L87 Difference]: Start difference. First operand 161 states and 452 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:36,514 INFO L93 Difference]: Finished difference Result 340 states and 918 transitions. [2021-03-10 22:17:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:36,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:36,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:36,516 INFO L225 Difference]: With dead ends: 340 [2021-03-10 22:17:36,516 INFO L226 Difference]: Without dead ends: 325 [2021-03-10 22:17:36,516 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:36,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-03-10 22:17:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 165. [2021-03-10 22:17:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.841463414634146) internal successors, (466), 164 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 466 transitions. [2021-03-10 22:17:36,521 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 466 transitions. Word has length 17 [2021-03-10 22:17:36,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:36,521 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 466 transitions. [2021-03-10 22:17:36,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,522 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 466 transitions. [2021-03-10 22:17:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:36,522 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:36,522 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:36,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-10 22:17:36,522 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:36,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:36,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1480345592, now seen corresponding path program 11 times [2021-03-10 22:17:36,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:36,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960217756] [2021-03-10 22:17:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:36,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960217756] [2021-03-10 22:17:36,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:36,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:36,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931106946] [2021-03-10 22:17:36,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:36,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:36,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:36,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:36,572 INFO L87 Difference]: Start difference. First operand 165 states and 466 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:36,688 INFO L93 Difference]: Finished difference Result 335 states and 909 transitions. [2021-03-10 22:17:36,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:36,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:36,691 INFO L225 Difference]: With dead ends: 335 [2021-03-10 22:17:36,691 INFO L226 Difference]: Without dead ends: 320 [2021-03-10 22:17:36,691 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 80.9ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:36,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-03-10 22:17:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 171. [2021-03-10 22:17:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.8411764705882354) internal successors, (483), 170 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2021-03-10 22:17:36,696 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2021-03-10 22:17:36,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:36,697 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2021-03-10 22:17:36,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,698 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2021-03-10 22:17:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:36,698 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:36,698 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:36,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-10 22:17:36,698 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:36,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:36,699 INFO L82 PathProgramCache]: Analyzing trace with hash -145439044, now seen corresponding path program 12 times [2021-03-10 22:17:36,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:36,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213039836] [2021-03-10 22:17:36,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:36,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213039836] [2021-03-10 22:17:36,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:36,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:36,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937122381] [2021-03-10 22:17:36,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:36,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:36,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:36,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:36,757 INFO L87 Difference]: Start difference. First operand 171 states and 483 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:36,858 INFO L93 Difference]: Finished difference Result 318 states and 879 transitions. [2021-03-10 22:17:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:36,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:36,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:36,860 INFO L225 Difference]: With dead ends: 318 [2021-03-10 22:17:36,860 INFO L226 Difference]: Without dead ends: 303 [2021-03-10 22:17:36,860 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 71.4ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:36,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-03-10 22:17:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 171. [2021-03-10 22:17:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.8411764705882354) internal successors, (483), 170 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2021-03-10 22:17:36,865 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2021-03-10 22:17:36,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:36,865 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2021-03-10 22:17:36,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2021-03-10 22:17:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:36,865 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:36,865 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:36,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-10 22:17:36,866 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:36,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:36,866 INFO L82 PathProgramCache]: Analyzing trace with hash 161256120, now seen corresponding path program 13 times [2021-03-10 22:17:36,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:36,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554795857] [2021-03-10 22:17:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:36,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554795857] [2021-03-10 22:17:36,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:36,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:36,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694119301] [2021-03-10 22:17:36,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:36,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:36,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:36,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:36,919 INFO L87 Difference]: Start difference. First operand 171 states and 483 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:37,018 INFO L93 Difference]: Finished difference Result 385 states and 1046 transitions. [2021-03-10 22:17:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:37,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:37,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:37,020 INFO L225 Difference]: With dead ends: 385 [2021-03-10 22:17:37,020 INFO L226 Difference]: Without dead ends: 370 [2021-03-10 22:17:37,020 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.8ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-03-10 22:17:37,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 174. [2021-03-10 22:17:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2021-03-10 22:17:37,025 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2021-03-10 22:17:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:37,025 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2021-03-10 22:17:37,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,026 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2021-03-10 22:17:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:37,026 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:37,026 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:37,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-10 22:17:37,026 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:37,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:37,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1057379240, now seen corresponding path program 14 times [2021-03-10 22:17:37,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:37,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118864721] [2021-03-10 22:17:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:37,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118864721] [2021-03-10 22:17:37,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:37,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:37,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422464820] [2021-03-10 22:17:37,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:37,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:37,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:37,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:37,072 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:37,157 INFO L93 Difference]: Finished difference Result 383 states and 1039 transitions. [2021-03-10 22:17:37,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:37,157 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:37,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:37,158 INFO L225 Difference]: With dead ends: 383 [2021-03-10 22:17:37,159 INFO L226 Difference]: Without dead ends: 368 [2021-03-10 22:17:37,159 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:37,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-03-10 22:17:37,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 174. [2021-03-10 22:17:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2021-03-10 22:17:37,164 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2021-03-10 22:17:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:37,164 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2021-03-10 22:17:37,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,164 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2021-03-10 22:17:37,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:37,165 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:37,165 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:37,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-10 22:17:37,165 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:37,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1150316668, now seen corresponding path program 15 times [2021-03-10 22:17:37,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:37,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163667621] [2021-03-10 22:17:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:37,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163667621] [2021-03-10 22:17:37,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:37,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:37,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908201087] [2021-03-10 22:17:37,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:37,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:37,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:37,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:37,207 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:37,309 INFO L93 Difference]: Finished difference Result 392 states and 1055 transitions. [2021-03-10 22:17:37,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:37,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:37,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:37,310 INFO L225 Difference]: With dead ends: 392 [2021-03-10 22:17:37,311 INFO L226 Difference]: Without dead ends: 377 [2021-03-10 22:17:37,311 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-03-10 22:17:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 177. [2021-03-10 22:17:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.909090909090909) internal successors, (512), 176 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 512 transitions. [2021-03-10 22:17:37,316 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 512 transitions. Word has length 17 [2021-03-10 22:17:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:37,316 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 512 transitions. [2021-03-10 22:17:37,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 512 transitions. [2021-03-10 22:17:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:37,317 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:37,317 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:37,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-10 22:17:37,317 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:37,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:37,317 INFO L82 PathProgramCache]: Analyzing trace with hash -19872328, now seen corresponding path program 16 times [2021-03-10 22:17:37,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:37,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148494170] [2021-03-10 22:17:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:37,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148494170] [2021-03-10 22:17:37,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:37,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:37,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810001206] [2021-03-10 22:17:37,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:37,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:37,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:37,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:37,365 INFO L87 Difference]: Start difference. First operand 177 states and 512 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:37,471 INFO L93 Difference]: Finished difference Result 376 states and 1032 transitions. [2021-03-10 22:17:37,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:37,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:37,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:37,473 INFO L225 Difference]: With dead ends: 376 [2021-03-10 22:17:37,473 INFO L226 Difference]: Without dead ends: 361 [2021-03-10 22:17:37,474 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:37,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-03-10 22:17:37,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 174. [2021-03-10 22:17:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2021-03-10 22:17:37,479 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2021-03-10 22:17:37,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:37,479 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2021-03-10 22:17:37,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2021-03-10 22:17:37,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:37,480 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:37,480 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:37,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-10 22:17:37,480 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:37,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:37,480 INFO L82 PathProgramCache]: Analyzing trace with hash -36809380, now seen corresponding path program 17 times [2021-03-10 22:17:37,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:37,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448197747] [2021-03-10 22:17:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:37,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448197747] [2021-03-10 22:17:37,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:37,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:37,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656745782] [2021-03-10 22:17:37,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:37,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:37,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:37,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:37,530 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:37,616 INFO L93 Difference]: Finished difference Result 364 states and 991 transitions. [2021-03-10 22:17:37,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:37,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:37,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:37,618 INFO L225 Difference]: With dead ends: 364 [2021-03-10 22:17:37,618 INFO L226 Difference]: Without dead ends: 349 [2021-03-10 22:17:37,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:37,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-03-10 22:17:37,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 176. [2021-03-10 22:17:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.8971428571428572) internal successors, (507), 175 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 507 transitions. [2021-03-10 22:17:37,635 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 507 transitions. Word has length 17 [2021-03-10 22:17:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:37,636 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 507 transitions. [2021-03-10 22:17:37,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 507 transitions. [2021-03-10 22:17:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:37,637 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:37,637 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:37,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-10 22:17:37,637 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:37,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:37,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1103474456, now seen corresponding path program 18 times [2021-03-10 22:17:37,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:37,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282990348] [2021-03-10 22:17:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:37,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282990348] [2021-03-10 22:17:37,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:37,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:37,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288059816] [2021-03-10 22:17:37,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:37,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:37,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:37,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:37,682 INFO L87 Difference]: Start difference. First operand 176 states and 507 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:37,782 INFO L93 Difference]: Finished difference Result 343 states and 953 transitions. [2021-03-10 22:17:37,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:37,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:37,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:37,785 INFO L225 Difference]: With dead ends: 343 [2021-03-10 22:17:37,785 INFO L226 Difference]: Without dead ends: 328 [2021-03-10 22:17:37,786 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-03-10 22:17:37,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 174. [2021-03-10 22:17:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2021-03-10 22:17:37,793 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2021-03-10 22:17:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:37,793 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2021-03-10 22:17:37,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2021-03-10 22:17:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:37,793 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:37,793 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:37,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-10 22:17:37,794 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:37,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:37,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1622951230, now seen corresponding path program 19 times [2021-03-10 22:17:37,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:37,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046196182] [2021-03-10 22:17:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:37,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046196182] [2021-03-10 22:17:37,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:37,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:37,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232928934] [2021-03-10 22:17:37,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:37,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:37,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:37,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:37,835 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:37,929 INFO L93 Difference]: Finished difference Result 360 states and 983 transitions. [2021-03-10 22:17:37,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:37,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:37,932 INFO L225 Difference]: With dead ends: 360 [2021-03-10 22:17:37,932 INFO L226 Difference]: Without dead ends: 345 [2021-03-10 22:17:37,933 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 69.0ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-03-10 22:17:37,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 177. [2021-03-10 22:17:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2021-03-10 22:17:37,939 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2021-03-10 22:17:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:37,939 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2021-03-10 22:17:37,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2021-03-10 22:17:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:37,940 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:37,940 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:37,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-10 22:17:37,940 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:37,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1422092646, now seen corresponding path program 20 times [2021-03-10 22:17:37,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:37,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497418905] [2021-03-10 22:17:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:37,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497418905] [2021-03-10 22:17:37,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:37,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:37,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333108337] [2021-03-10 22:17:37,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:37,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:37,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:37,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:37,997 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:38,093 INFO L93 Difference]: Finished difference Result 377 states and 1017 transitions. [2021-03-10 22:17:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:38,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:38,095 INFO L225 Difference]: With dead ends: 377 [2021-03-10 22:17:38,095 INFO L226 Difference]: Without dead ends: 362 [2021-03-10 22:17:38,095 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.6ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-03-10 22:17:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 179. [2021-03-10 22:17:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.9157303370786516) internal successors, (519), 178 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 519 transitions. [2021-03-10 22:17:38,101 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 519 transitions. Word has length 17 [2021-03-10 22:17:38,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:38,101 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 519 transitions. [2021-03-10 22:17:38,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,101 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 519 transitions. [2021-03-10 22:17:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:38,101 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:38,101 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:38,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-10 22:17:38,102 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:38,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:38,102 INFO L82 PathProgramCache]: Analyzing trace with hash 203457286, now seen corresponding path program 21 times [2021-03-10 22:17:38,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:38,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309798342] [2021-03-10 22:17:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:38,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309798342] [2021-03-10 22:17:38,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:38,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:38,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769808787] [2021-03-10 22:17:38,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:38,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:38,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:38,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:38,148 INFO L87 Difference]: Start difference. First operand 179 states and 519 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:38,261 INFO L93 Difference]: Finished difference Result 354 states and 972 transitions. [2021-03-10 22:17:38,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:38,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:38,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:38,263 INFO L225 Difference]: With dead ends: 354 [2021-03-10 22:17:38,263 INFO L226 Difference]: Without dead ends: 339 [2021-03-10 22:17:38,263 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-03-10 22:17:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 177. [2021-03-10 22:17:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2021-03-10 22:17:38,273 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2021-03-10 22:17:38,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:38,273 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2021-03-10 22:17:38,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2021-03-10 22:17:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:38,277 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:38,277 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:38,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-10 22:17:38,277 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:38,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:38,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1026845314, now seen corresponding path program 22 times [2021-03-10 22:17:38,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:38,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859452860] [2021-03-10 22:17:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:38,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859452860] [2021-03-10 22:17:38,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:38,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:38,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640699059] [2021-03-10 22:17:38,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:38,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:38,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:38,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:38,320 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:38,419 INFO L93 Difference]: Finished difference Result 409 states and 1106 transitions. [2021-03-10 22:17:38,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:38,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:38,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:38,429 INFO L225 Difference]: With dead ends: 409 [2021-03-10 22:17:38,429 INFO L226 Difference]: Without dead ends: 394 [2021-03-10 22:17:38,429 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 69.0ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:38,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-03-10 22:17:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 180. [2021-03-10 22:17:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.910614525139665) internal successors, (521), 179 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 521 transitions. [2021-03-10 22:17:38,435 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 521 transitions. Word has length 17 [2021-03-10 22:17:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:38,435 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 521 transitions. [2021-03-10 22:17:38,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,435 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 521 transitions. [2021-03-10 22:17:38,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:38,435 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:38,435 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:38,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-10 22:17:38,436 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:38,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:38,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1848016830, now seen corresponding path program 23 times [2021-03-10 22:17:38,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:38,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20972168] [2021-03-10 22:17:38,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:38,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20972168] [2021-03-10 22:17:38,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:38,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:38,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647302285] [2021-03-10 22:17:38,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:38,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:38,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:38,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:38,482 INFO L87 Difference]: Start difference. First operand 180 states and 521 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:38,590 INFO L93 Difference]: Finished difference Result 407 states and 1110 transitions. [2021-03-10 22:17:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:38,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:38,592 INFO L225 Difference]: With dead ends: 407 [2021-03-10 22:17:38,592 INFO L226 Difference]: Without dead ends: 392 [2021-03-10 22:17:38,593 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:38,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-03-10 22:17:38,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 183. [2021-03-10 22:17:38,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.9395604395604398) internal successors, (535), 182 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 535 transitions. [2021-03-10 22:17:38,598 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 535 transitions. Word has length 17 [2021-03-10 22:17:38,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:38,598 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 535 transitions. [2021-03-10 22:17:38,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 535 transitions. [2021-03-10 22:17:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:38,598 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:38,599 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:38,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-10 22:17:38,599 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:38,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:38,599 INFO L82 PathProgramCache]: Analyzing trace with hash 748230078, now seen corresponding path program 24 times [2021-03-10 22:17:38,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:38,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28683982] [2021-03-10 22:17:38,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:38,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28683982] [2021-03-10 22:17:38,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:38,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:38,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522717813] [2021-03-10 22:17:38,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:38,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:38,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:38,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:38,642 INFO L87 Difference]: Start difference. First operand 183 states and 535 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:38,739 INFO L93 Difference]: Finished difference Result 384 states and 1065 transitions. [2021-03-10 22:17:38,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:38,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:38,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:38,743 INFO L225 Difference]: With dead ends: 384 [2021-03-10 22:17:38,743 INFO L226 Difference]: Without dead ends: 369 [2021-03-10 22:17:38,743 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-03-10 22:17:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 177. [2021-03-10 22:17:38,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2021-03-10 22:17:38,748 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2021-03-10 22:17:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:38,748 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2021-03-10 22:17:38,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,748 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2021-03-10 22:17:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:38,749 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:38,749 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:38,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-10 22:17:38,749 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:38,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1951172510, now seen corresponding path program 25 times [2021-03-10 22:17:38,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:38,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046376740] [2021-03-10 22:17:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:38,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046376740] [2021-03-10 22:17:38,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:38,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:38,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525348835] [2021-03-10 22:17:38,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:38,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:38,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:38,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:38,794 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:38,878 INFO L93 Difference]: Finished difference Result 403 states and 1103 transitions. [2021-03-10 22:17:38,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:38,878 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:38,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:38,879 INFO L225 Difference]: With dead ends: 403 [2021-03-10 22:17:38,879 INFO L226 Difference]: Without dead ends: 388 [2021-03-10 22:17:38,879 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 53.8ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-03-10 22:17:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 180. [2021-03-10 22:17:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9329608938547485) internal successors, (525), 179 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2021-03-10 22:17:38,884 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2021-03-10 22:17:38,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:38,884 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2021-03-10 22:17:38,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2021-03-10 22:17:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:38,885 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:38,885 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:38,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-10 22:17:38,885 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:38,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1125159426, now seen corresponding path program 26 times [2021-03-10 22:17:38,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:38,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190495528] [2021-03-10 22:17:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:38,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190495528] [2021-03-10 22:17:38,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:38,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:38,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056842537] [2021-03-10 22:17:38,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:38,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:38,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:38,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:38,932 INFO L87 Difference]: Start difference. First operand 180 states and 525 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:39,044 INFO L93 Difference]: Finished difference Result 401 states and 1096 transitions. [2021-03-10 22:17:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:39,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:39,045 INFO L225 Difference]: With dead ends: 401 [2021-03-10 22:17:39,045 INFO L226 Difference]: Without dead ends: 386 [2021-03-10 22:17:39,045 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 58.4ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:39,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-03-10 22:17:39,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 178. [2021-03-10 22:17:39,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9152542372881354) internal successors, (516), 177 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2021-03-10 22:17:39,049 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2021-03-10 22:17:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:39,049 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2021-03-10 22:17:39,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,049 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2021-03-10 22:17:39,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:39,050 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:39,050 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:39,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-10 22:17:39,050 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:39,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:39,050 INFO L82 PathProgramCache]: Analyzing trace with hash -962111962, now seen corresponding path program 27 times [2021-03-10 22:17:39,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:39,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221732236] [2021-03-10 22:17:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:39,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221732236] [2021-03-10 22:17:39,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:39,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:39,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27801803] [2021-03-10 22:17:39,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:39,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:39,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:39,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:39,094 INFO L87 Difference]: Start difference. First operand 178 states and 516 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:39,210 INFO L93 Difference]: Finished difference Result 395 states and 1075 transitions. [2021-03-10 22:17:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:39,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:39,211 INFO L225 Difference]: With dead ends: 395 [2021-03-10 22:17:39,211 INFO L226 Difference]: Without dead ends: 380 [2021-03-10 22:17:39,211 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 67.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:39,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-03-10 22:17:39,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 181. [2021-03-10 22:17:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.9444444444444446) internal successors, (530), 180 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 530 transitions. [2021-03-10 22:17:39,214 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 530 transitions. Word has length 17 [2021-03-10 22:17:39,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:39,214 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 530 transitions. [2021-03-10 22:17:39,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,214 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 530 transitions. [2021-03-10 22:17:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:39,215 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:39,215 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:39,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-10 22:17:39,215 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:39,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:39,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2132300958, now seen corresponding path program 28 times [2021-03-10 22:17:39,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:39,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304650862] [2021-03-10 22:17:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:39,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304650862] [2021-03-10 22:17:39,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:39,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:39,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893107317] [2021-03-10 22:17:39,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:39,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:39,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:39,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:39,259 INFO L87 Difference]: Start difference. First operand 181 states and 530 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:39,375 INFO L93 Difference]: Finished difference Result 379 states and 1052 transitions. [2021-03-10 22:17:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:39,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:39,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:39,376 INFO L225 Difference]: With dead ends: 379 [2021-03-10 22:17:39,376 INFO L226 Difference]: Without dead ends: 364 [2021-03-10 22:17:39,376 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:39,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-03-10 22:17:39,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 178. [2021-03-10 22:17:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9152542372881354) internal successors, (516), 177 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2021-03-10 22:17:39,379 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2021-03-10 22:17:39,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:39,379 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2021-03-10 22:17:39,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,379 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2021-03-10 22:17:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:39,380 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:39,380 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:39,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-10 22:17:39,380 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:39,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2145729286, now seen corresponding path program 29 times [2021-03-10 22:17:39,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:39,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120536691] [2021-03-10 22:17:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:39,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120536691] [2021-03-10 22:17:39,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:39,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:39,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74911426] [2021-03-10 22:17:39,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:39,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:39,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:39,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:39,422 INFO L87 Difference]: Start difference. First operand 178 states and 516 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:39,521 INFO L93 Difference]: Finished difference Result 363 states and 1003 transitions. [2021-03-10 22:17:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:39,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:39,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:39,522 INFO L225 Difference]: With dead ends: 363 [2021-03-10 22:17:39,522 INFO L226 Difference]: Without dead ends: 348 [2021-03-10 22:17:39,522 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.4ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:39,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-03-10 22:17:39,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 180. [2021-03-10 22:17:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9329608938547485) internal successors, (525), 179 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2021-03-10 22:17:39,528 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2021-03-10 22:17:39,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:39,528 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2021-03-10 22:17:39,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2021-03-10 22:17:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:39,529 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:39,529 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:39,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-10 22:17:39,529 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1008954174, now seen corresponding path program 30 times [2021-03-10 22:17:39,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:39,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784733364] [2021-03-10 22:17:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:39,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784733364] [2021-03-10 22:17:39,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:39,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:39,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409577906] [2021-03-10 22:17:39,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:39,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:39,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:39,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:39,568 INFO L87 Difference]: Start difference. First operand 180 states and 525 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:39,654 INFO L93 Difference]: Finished difference Result 342 states and 965 transitions. [2021-03-10 22:17:39,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:39,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:39,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:39,655 INFO L225 Difference]: With dead ends: 342 [2021-03-10 22:17:39,655 INFO L226 Difference]: Without dead ends: 327 [2021-03-10 22:17:39,655 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:39,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-03-10 22:17:39,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 177. [2021-03-10 22:17:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2021-03-10 22:17:39,659 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2021-03-10 22:17:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:39,659 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2021-03-10 22:17:39,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2021-03-10 22:17:39,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:39,659 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:39,660 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:39,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-10 22:17:39,660 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:39,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:39,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1057121422, now seen corresponding path program 31 times [2021-03-10 22:17:39,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:39,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334276162] [2021-03-10 22:17:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:39,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334276162] [2021-03-10 22:17:39,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:39,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:39,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493367101] [2021-03-10 22:17:39,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:39,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:39,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:39,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:39,710 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:39,789 INFO L93 Difference]: Finished difference Result 377 states and 1036 transitions. [2021-03-10 22:17:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:39,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:39,790 INFO L225 Difference]: With dead ends: 377 [2021-03-10 22:17:39,790 INFO L226 Difference]: Without dead ends: 362 [2021-03-10 22:17:39,790 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-03-10 22:17:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 186. [2021-03-10 22:17:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.9513513513513514) internal successors, (546), 185 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 546 transitions. [2021-03-10 22:17:39,793 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 546 transitions. Word has length 17 [2021-03-10 22:17:39,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:39,793 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 546 transitions. [2021-03-10 22:17:39,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,794 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 546 transitions. [2021-03-10 22:17:39,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:39,794 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:39,794 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:39,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-10 22:17:39,794 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:39,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:39,794 INFO L82 PathProgramCache]: Analyzing trace with hash -2030292802, now seen corresponding path program 32 times [2021-03-10 22:17:39,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:39,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509613628] [2021-03-10 22:17:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:39,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509613628] [2021-03-10 22:17:39,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:39,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:39,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588971363] [2021-03-10 22:17:39,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:39,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:39,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:39,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:39,844 INFO L87 Difference]: Start difference. First operand 186 states and 546 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:39,924 INFO L93 Difference]: Finished difference Result 386 states and 1062 transitions. [2021-03-10 22:17:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:39,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:39,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:39,926 INFO L225 Difference]: With dead ends: 386 [2021-03-10 22:17:39,926 INFO L226 Difference]: Without dead ends: 371 [2021-03-10 22:17:39,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:39,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-03-10 22:17:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 189. [2021-03-10 22:17:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.978723404255319) internal successors, (560), 188 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 560 transitions. [2021-03-10 22:17:39,930 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 560 transitions. Word has length 17 [2021-03-10 22:17:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:39,930 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 560 transitions. [2021-03-10 22:17:39,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 560 transitions. [2021-03-10 22:17:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:39,931 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:39,931 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:39,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-10 22:17:39,931 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:39,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:39,932 INFO L82 PathProgramCache]: Analyzing trace with hash 565954106, now seen corresponding path program 33 times [2021-03-10 22:17:39,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:39,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164126885] [2021-03-10 22:17:39,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:39,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164126885] [2021-03-10 22:17:39,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:39,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:39,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897170357] [2021-03-10 22:17:39,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:39,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:39,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:39,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:39,974 INFO L87 Difference]: Start difference. First operand 189 states and 560 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:40,072 INFO L93 Difference]: Finished difference Result 393 states and 1078 transitions. [2021-03-10 22:17:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:40,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:40,074 INFO L225 Difference]: With dead ends: 393 [2021-03-10 22:17:40,074 INFO L226 Difference]: Without dead ends: 378 [2021-03-10 22:17:40,074 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-03-10 22:17:40,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 181. [2021-03-10 22:17:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.933333333333333) internal successors, (528), 180 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2021-03-10 22:17:40,079 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2021-03-10 22:17:40,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:40,079 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2021-03-10 22:17:40,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2021-03-10 22:17:40,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:40,079 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:40,080 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:40,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-10 22:17:40,080 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:40,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2049664750, now seen corresponding path program 34 times [2021-03-10 22:17:40,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:40,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734419889] [2021-03-10 22:17:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:40,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734419889] [2021-03-10 22:17:40,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:40,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:40,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579253219] [2021-03-10 22:17:40,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:40,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:40,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:40,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:40,137 INFO L87 Difference]: Start difference. First operand 181 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:40,241 INFO L93 Difference]: Finished difference Result 438 states and 1184 transitions. [2021-03-10 22:17:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:40,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:40,242 INFO L225 Difference]: With dead ends: 438 [2021-03-10 22:17:40,242 INFO L226 Difference]: Without dead ends: 423 [2021-03-10 22:17:40,242 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:40,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-03-10 22:17:40,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 185. [2021-03-10 22:17:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9456521739130435) internal successors, (542), 184 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 542 transitions. [2021-03-10 22:17:40,246 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 542 transitions. Word has length 17 [2021-03-10 22:17:40,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:40,246 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 542 transitions. [2021-03-10 22:17:40,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 542 transitions. [2021-03-10 22:17:40,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:40,247 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:40,247 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:40,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-10 22:17:40,247 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:40,248 INFO L82 PathProgramCache]: Analyzing trace with hash 278392308, now seen corresponding path program 35 times [2021-03-10 22:17:40,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:40,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159748517] [2021-03-10 22:17:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:40,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159748517] [2021-03-10 22:17:40,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:40,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:40,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866053213] [2021-03-10 22:17:40,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:40,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:40,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:40,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:40,292 INFO L87 Difference]: Start difference. First operand 185 states and 542 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:40,382 INFO L93 Difference]: Finished difference Result 433 states and 1175 transitions. [2021-03-10 22:17:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:40,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:40,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:40,383 INFO L225 Difference]: With dead ends: 433 [2021-03-10 22:17:40,383 INFO L226 Difference]: Without dead ends: 418 [2021-03-10 22:17:40,383 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.0ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-03-10 22:17:40,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 187. [2021-03-10 22:17:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9623655913978495) internal successors, (551), 186 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 551 transitions. [2021-03-10 22:17:40,387 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 551 transitions. Word has length 17 [2021-03-10 22:17:40,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:40,387 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 551 transitions. [2021-03-10 22:17:40,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,387 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 551 transitions. [2021-03-10 22:17:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:40,387 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:40,387 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:40,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-10 22:17:40,388 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:40,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:40,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1347392328, now seen corresponding path program 36 times [2021-03-10 22:17:40,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:40,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192936534] [2021-03-10 22:17:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:40,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192936534] [2021-03-10 22:17:40,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:40,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:40,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281705264] [2021-03-10 22:17:40,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:40,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:40,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:40,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:40,433 INFO L87 Difference]: Start difference. First operand 187 states and 551 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:40,532 INFO L93 Difference]: Finished difference Result 416 states and 1145 transitions. [2021-03-10 22:17:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:40,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:40,533 INFO L225 Difference]: With dead ends: 416 [2021-03-10 22:17:40,533 INFO L226 Difference]: Without dead ends: 401 [2021-03-10 22:17:40,534 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.7ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:40,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-03-10 22:17:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 181. [2021-03-10 22:17:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.933333333333333) internal successors, (528), 180 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2021-03-10 22:17:40,537 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2021-03-10 22:17:40,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:40,537 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2021-03-10 22:17:40,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,537 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2021-03-10 22:17:40,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:40,538 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:40,538 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:40,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-10 22:17:40,538 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:40,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:40,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1040697164, now seen corresponding path program 37 times [2021-03-10 22:17:40,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:40,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701412200] [2021-03-10 22:17:40,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:40,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701412200] [2021-03-10 22:17:40,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:40,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:40,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404010006] [2021-03-10 22:17:40,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:40,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:40,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:40,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:40,607 INFO L87 Difference]: Start difference. First operand 181 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:40,683 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2021-03-10 22:17:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:40,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:40,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:40,684 INFO L225 Difference]: With dead ends: 437 [2021-03-10 22:17:40,684 INFO L226 Difference]: Without dead ends: 422 [2021-03-10 22:17:40,685 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 67.0ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-03-10 22:17:40,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 184. [2021-03-10 22:17:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9672131147540983) internal successors, (543), 183 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2021-03-10 22:17:40,688 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2021-03-10 22:17:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:40,688 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2021-03-10 22:17:40,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,688 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2021-03-10 22:17:40,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:40,689 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:40,689 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:40,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-10 22:17:40,689 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:40,689 INFO L82 PathProgramCache]: Analyzing trace with hash 2035634772, now seen corresponding path program 38 times [2021-03-10 22:17:40,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:40,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613597631] [2021-03-10 22:17:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:40,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613597631] [2021-03-10 22:17:40,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:40,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:40,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288898006] [2021-03-10 22:17:40,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:40,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:40,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:40,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:40,733 INFO L87 Difference]: Start difference. First operand 184 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:40,827 INFO L93 Difference]: Finished difference Result 435 states and 1194 transitions. [2021-03-10 22:17:40,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:40,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:40,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:40,828 INFO L225 Difference]: With dead ends: 435 [2021-03-10 22:17:40,828 INFO L226 Difference]: Without dead ends: 420 [2021-03-10 22:17:40,828 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:40,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-03-10 22:17:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 182. [2021-03-10 22:17:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9502762430939224) internal successors, (534), 181 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2021-03-10 22:17:40,832 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2021-03-10 22:17:40,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:40,832 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2021-03-10 22:17:40,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,832 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2021-03-10 22:17:40,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:40,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:40,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:40,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-10 22:17:40,833 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:40,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:40,833 INFO L82 PathProgramCache]: Analyzing trace with hash -51636616, now seen corresponding path program 39 times [2021-03-10 22:17:40,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:40,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809853133] [2021-03-10 22:17:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:40,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809853133] [2021-03-10 22:17:40,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:40,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:40,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315816069] [2021-03-10 22:17:40,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:40,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:40,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:40,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:40,878 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:40,957 INFO L93 Difference]: Finished difference Result 468 states and 1258 transitions. [2021-03-10 22:17:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:40,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:40,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:40,958 INFO L225 Difference]: With dead ends: 468 [2021-03-10 22:17:40,958 INFO L226 Difference]: Without dead ends: 453 [2021-03-10 22:17:40,958 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-03-10 22:17:40,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 185. [2021-03-10 22:17:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9782608695652173) internal successors, (548), 184 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 548 transitions. [2021-03-10 22:17:40,963 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 548 transitions. Word has length 17 [2021-03-10 22:17:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:40,963 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 548 transitions. [2021-03-10 22:17:40,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 548 transitions. [2021-03-10 22:17:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:40,964 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:40,964 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:40,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-10 22:17:40,964 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:40,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1221825612, now seen corresponding path program 40 times [2021-03-10 22:17:40,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:40,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109506410] [2021-03-10 22:17:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:41,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109506410] [2021-03-10 22:17:41,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:41,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:41,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848947259] [2021-03-10 22:17:41,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:41,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:41,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:41,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:41,008 INFO L87 Difference]: Start difference. First operand 185 states and 548 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:41,099 INFO L93 Difference]: Finished difference Result 452 states and 1235 transitions. [2021-03-10 22:17:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:41,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:41,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:41,101 INFO L225 Difference]: With dead ends: 452 [2021-03-10 22:17:41,101 INFO L226 Difference]: Without dead ends: 437 [2021-03-10 22:17:41,101 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 53.8ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:41,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-03-10 22:17:41,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 182. [2021-03-10 22:17:41,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9502762430939224) internal successors, (534), 181 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2021-03-10 22:17:41,106 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2021-03-10 22:17:41,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:41,106 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2021-03-10 22:17:41,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2021-03-10 22:17:41,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:41,106 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:41,106 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:41,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-10 22:17:41,107 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:41,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:41,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1238762664, now seen corresponding path program 41 times [2021-03-10 22:17:41,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:41,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506842469] [2021-03-10 22:17:41,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:41,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506842469] [2021-03-10 22:17:41,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:41,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:41,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531708898] [2021-03-10 22:17:41,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:41,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:41,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:41,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:41,150 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:41,252 INFO L93 Difference]: Finished difference Result 446 states and 1215 transitions. [2021-03-10 22:17:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:41,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:41,253 INFO L225 Difference]: With dead ends: 446 [2021-03-10 22:17:41,254 INFO L226 Difference]: Without dead ends: 431 [2021-03-10 22:17:41,254 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-03-10 22:17:41,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 184. [2021-03-10 22:17:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9672131147540983) internal successors, (543), 183 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2021-03-10 22:17:41,257 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2021-03-10 22:17:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:41,258 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2021-03-10 22:17:41,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,258 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2021-03-10 22:17:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:41,258 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:41,258 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:41,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-10 22:17:41,258 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:41,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:41,259 INFO L82 PathProgramCache]: Analyzing trace with hash -98478828, now seen corresponding path program 42 times [2021-03-10 22:17:41,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:41,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071685592] [2021-03-10 22:17:41,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:41,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071685592] [2021-03-10 22:17:41,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:41,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:41,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385452405] [2021-03-10 22:17:41,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:41,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:41,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:41,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:41,302 INFO L87 Difference]: Start difference. First operand 184 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:41,407 INFO L93 Difference]: Finished difference Result 425 states and 1177 transitions. [2021-03-10 22:17:41,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:41,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:41,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:41,408 INFO L225 Difference]: With dead ends: 425 [2021-03-10 22:17:41,408 INFO L226 Difference]: Without dead ends: 410 [2021-03-10 22:17:41,408 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 70.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-03-10 22:17:41,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 179. [2021-03-10 22:17:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.9101123595505616) internal successors, (518), 178 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 518 transitions. [2021-03-10 22:17:41,412 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 518 transitions. Word has length 17 [2021-03-10 22:17:41,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:41,412 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 518 transitions. [2021-03-10 22:17:41,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,412 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 518 transitions. [2021-03-10 22:17:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:41,412 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:41,412 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:41,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-10 22:17:41,412 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:41,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:41,413 INFO L82 PathProgramCache]: Analyzing trace with hash -485249606, now seen corresponding path program 43 times [2021-03-10 22:17:41,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:41,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732392622] [2021-03-10 22:17:41,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:41,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732392622] [2021-03-10 22:17:41,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:41,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:41,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474561692] [2021-03-10 22:17:41,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:41,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:41,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:41,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:41,451 INFO L87 Difference]: Start difference. First operand 179 states and 518 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:41,536 INFO L93 Difference]: Finished difference Result 323 states and 889 transitions. [2021-03-10 22:17:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:41,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:41,540 INFO L225 Difference]: With dead ends: 323 [2021-03-10 22:17:41,540 INFO L226 Difference]: Without dead ends: 308 [2021-03-10 22:17:41,543 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.1ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-03-10 22:17:41,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 187. [2021-03-10 22:17:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.913978494623656) internal successors, (542), 186 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 542 transitions. [2021-03-10 22:17:41,548 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 542 transitions. Word has length 17 [2021-03-10 22:17:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:41,548 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 542 transitions. [2021-03-10 22:17:41,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 542 transitions. [2021-03-10 22:17:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:41,548 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:41,548 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:41,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-10 22:17:41,548 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:41,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:41,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2038445248, now seen corresponding path program 44 times [2021-03-10 22:17:41,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:41,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091287546] [2021-03-10 22:17:41,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:41,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091287546] [2021-03-10 22:17:41,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:41,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:41,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423198737] [2021-03-10 22:17:41,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:41,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:41,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:41,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:41,608 INFO L87 Difference]: Start difference. First operand 187 states and 542 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:41,698 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2021-03-10 22:17:41,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:41,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:41,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:41,699 INFO L225 Difference]: With dead ends: 353 [2021-03-10 22:17:41,699 INFO L226 Difference]: Without dead ends: 338 [2021-03-10 22:17:41,699 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 71.0ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-03-10 22:17:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 189. [2021-03-10 22:17:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9308510638297873) internal successors, (551), 188 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2021-03-10 22:17:41,702 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 17 [2021-03-10 22:17:41,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:41,702 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2021-03-10 22:17:41,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2021-03-10 22:17:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:41,703 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:41,703 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:41,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-10 22:17:41,703 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:41,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:41,703 INFO L82 PathProgramCache]: Analyzing trace with hash 412660612, now seen corresponding path program 45 times [2021-03-10 22:17:41,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:41,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994848885] [2021-03-10 22:17:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:41,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994848885] [2021-03-10 22:17:41,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:41,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:41,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540860382] [2021-03-10 22:17:41,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:41,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:41,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:41,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:41,752 INFO L87 Difference]: Start difference. First operand 189 states and 551 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:41,853 INFO L93 Difference]: Finished difference Result 336 states and 921 transitions. [2021-03-10 22:17:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:41,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:41,854 INFO L225 Difference]: With dead ends: 336 [2021-03-10 22:17:41,854 INFO L226 Difference]: Without dead ends: 321 [2021-03-10 22:17:41,854 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 67.6ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-03-10 22:17:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 183. [2021-03-10 22:17:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.901098901098901) internal successors, (528), 182 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 528 transitions. [2021-03-10 22:17:41,857 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 528 transitions. Word has length 17 [2021-03-10 22:17:41,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:41,857 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 528 transitions. [2021-03-10 22:17:41,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,858 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 528 transitions. [2021-03-10 22:17:41,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:41,858 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:41,858 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:41,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-10 22:17:41,858 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash 379489126, now seen corresponding path program 46 times [2021-03-10 22:17:41,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:41,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833407844] [2021-03-10 22:17:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:41,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:41,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833407844] [2021-03-10 22:17:41,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:41,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:41,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116531866] [2021-03-10 22:17:41,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:41,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:41,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:41,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:41,898 INFO L87 Difference]: Start difference. First operand 183 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:41,976 INFO L93 Difference]: Finished difference Result 324 states and 889 transitions. [2021-03-10 22:17:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:41,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:41,977 INFO L225 Difference]: With dead ends: 324 [2021-03-10 22:17:41,977 INFO L226 Difference]: Without dead ends: 309 [2021-03-10 22:17:41,977 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.0ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-03-10 22:17:41,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 189. [2021-03-10 22:17:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.8882978723404253) internal successors, (543), 188 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2021-03-10 22:17:41,981 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2021-03-10 22:17:41,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:41,981 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2021-03-10 22:17:41,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:41,981 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2021-03-10 22:17:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:41,981 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:41,981 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:41,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-10 22:17:41,982 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:41,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1252190110, now seen corresponding path program 47 times [2021-03-10 22:17:41,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:41,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352852404] [2021-03-10 22:17:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:42,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352852404] [2021-03-10 22:17:42,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:42,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:42,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092406674] [2021-03-10 22:17:42,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:42,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:42,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:42,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:42,021 INFO L87 Difference]: Start difference. First operand 189 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:42,115 INFO L93 Difference]: Finished difference Result 354 states and 954 transitions. [2021-03-10 22:17:42,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:42,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:42,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:42,116 INFO L225 Difference]: With dead ends: 354 [2021-03-10 22:17:42,116 INFO L226 Difference]: Without dead ends: 339 [2021-03-10 22:17:42,116 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 67.7ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-03-10 22:17:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 191. [2021-03-10 22:17:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.905263157894737) internal successors, (552), 190 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 552 transitions. [2021-03-10 22:17:42,119 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 552 transitions. Word has length 17 [2021-03-10 22:17:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:42,119 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 552 transitions. [2021-03-10 22:17:42,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 552 transitions. [2021-03-10 22:17:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:42,120 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:42,120 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:42,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-10 22:17:42,120 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:42,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:42,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1416992550, now seen corresponding path program 48 times [2021-03-10 22:17:42,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:42,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791669009] [2021-03-10 22:17:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:42,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:42,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791669009] [2021-03-10 22:17:42,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:42,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:42,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987819299] [2021-03-10 22:17:42,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:42,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:42,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:42,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:42,157 INFO L87 Difference]: Start difference. First operand 191 states and 552 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:42,246 INFO L93 Difference]: Finished difference Result 333 states and 916 transitions. [2021-03-10 22:17:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:42,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:42,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:42,247 INFO L225 Difference]: With dead ends: 333 [2021-03-10 22:17:42,247 INFO L226 Difference]: Without dead ends: 318 [2021-03-10 22:17:42,247 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 63.8ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:42,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-03-10 22:17:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 189. [2021-03-10 22:17:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.8882978723404253) internal successors, (543), 188 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2021-03-10 22:17:42,251 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2021-03-10 22:17:42,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:42,251 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2021-03-10 22:17:42,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,251 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2021-03-10 22:17:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:42,251 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:42,252 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:42,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-10 22:17:42,252 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:42,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:42,252 INFO L82 PathProgramCache]: Analyzing trace with hash -167418646, now seen corresponding path program 49 times [2021-03-10 22:17:42,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:42,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062773888] [2021-03-10 22:17:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:42,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062773888] [2021-03-10 22:17:42,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:42,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:42,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893987] [2021-03-10 22:17:42,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:42,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:42,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:42,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:42,294 INFO L87 Difference]: Start difference. First operand 189 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:42,380 INFO L93 Difference]: Finished difference Result 386 states and 1068 transitions. [2021-03-10 22:17:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:42,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:42,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:42,381 INFO L225 Difference]: With dead ends: 386 [2021-03-10 22:17:42,381 INFO L226 Difference]: Without dead ends: 371 [2021-03-10 22:17:42,381 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 61.6ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:42,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-03-10 22:17:42,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 194. [2021-03-10 22:17:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.922279792746114) internal successors, (564), 193 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 564 transitions. [2021-03-10 22:17:42,385 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 564 transitions. Word has length 17 [2021-03-10 22:17:42,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:42,386 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 564 transitions. [2021-03-10 22:17:42,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,386 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 564 transitions. [2021-03-10 22:17:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:42,386 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:42,386 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:42,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-10 22:17:42,386 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:42,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1386054006, now seen corresponding path program 50 times [2021-03-10 22:17:42,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:42,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357330658] [2021-03-10 22:17:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:42,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357330658] [2021-03-10 22:17:42,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:42,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:42,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244212034] [2021-03-10 22:17:42,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:42,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:42,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:42,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:42,429 INFO L87 Difference]: Start difference. First operand 194 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:42,514 INFO L93 Difference]: Finished difference Result 390 states and 1074 transitions. [2021-03-10 22:17:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:42,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:42,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:42,515 INFO L225 Difference]: With dead ends: 390 [2021-03-10 22:17:42,515 INFO L226 Difference]: Without dead ends: 375 [2021-03-10 22:17:42,515 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:42,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-03-10 22:17:42,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 192. [2021-03-10 22:17:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2021-03-10 22:17:42,519 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2021-03-10 22:17:42,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:42,519 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2021-03-10 22:17:42,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,519 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2021-03-10 22:17:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:42,519 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:42,519 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:42,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-10 22:17:42,519 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:42,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:42,520 INFO L82 PathProgramCache]: Analyzing trace with hash -310342850, now seen corresponding path program 51 times [2021-03-10 22:17:42,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:42,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474122018] [2021-03-10 22:17:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:42,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474122018] [2021-03-10 22:17:42,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:42,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:42,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319813063] [2021-03-10 22:17:42,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:42,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:42,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:42,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:42,559 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:42,638 INFO L93 Difference]: Finished difference Result 386 states and 1060 transitions. [2021-03-10 22:17:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:42,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:42,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:42,639 INFO L225 Difference]: With dead ends: 386 [2021-03-10 22:17:42,640 INFO L226 Difference]: Without dead ends: 371 [2021-03-10 22:17:42,640 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 59.5ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:42,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-03-10 22:17:42,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 192. [2021-03-10 22:17:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2021-03-10 22:17:42,645 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2021-03-10 22:17:42,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:42,645 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2021-03-10 22:17:42,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2021-03-10 22:17:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:42,645 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:42,645 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:42,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-10 22:17:42,646 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:42,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:42,646 INFO L82 PathProgramCache]: Analyzing trace with hash -548101402, now seen corresponding path program 52 times [2021-03-10 22:17:42,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:42,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114364297] [2021-03-10 22:17:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:42,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114364297] [2021-03-10 22:17:42,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:42,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:42,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078921900] [2021-03-10 22:17:42,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:42,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:42,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:42,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:42,691 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:42,787 INFO L93 Difference]: Finished difference Result 464 states and 1256 transitions. [2021-03-10 22:17:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:42,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:42,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:42,788 INFO L225 Difference]: With dead ends: 464 [2021-03-10 22:17:42,788 INFO L226 Difference]: Without dead ends: 449 [2021-03-10 22:17:42,789 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-03-10 22:17:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 195. [2021-03-10 22:17:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9381443298969074) internal successors, (570), 194 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2021-03-10 22:17:42,794 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2021-03-10 22:17:42,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:42,794 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2021-03-10 22:17:42,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,794 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2021-03-10 22:17:42,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:42,795 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:42,795 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:42,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-10 22:17:42,796 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:42,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:42,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1766736762, now seen corresponding path program 53 times [2021-03-10 22:17:42,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:42,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361857190] [2021-03-10 22:17:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:42,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361857190] [2021-03-10 22:17:42,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:42,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:42,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512686341] [2021-03-10 22:17:42,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:42,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:42,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:42,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:42,838 INFO L87 Difference]: Start difference. First operand 195 states and 570 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:42,935 INFO L93 Difference]: Finished difference Result 468 states and 1262 transitions. [2021-03-10 22:17:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:42,936 INFO L225 Difference]: With dead ends: 468 [2021-03-10 22:17:42,936 INFO L226 Difference]: Without dead ends: 453 [2021-03-10 22:17:42,936 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 53.8ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:42,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-03-10 22:17:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 193. [2021-03-10 22:17:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.921875) internal successors, (561), 192 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2021-03-10 22:17:42,943 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2021-03-10 22:17:42,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:42,943 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2021-03-10 22:17:42,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2021-03-10 22:17:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:42,944 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:42,944 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:42,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-10 22:17:42,946 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:42,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:42,946 INFO L82 PathProgramCache]: Analyzing trace with hash 440959146, now seen corresponding path program 54 times [2021-03-10 22:17:42,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:42,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916927117] [2021-03-10 22:17:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:42,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916927117] [2021-03-10 22:17:42,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:42,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:42,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600468910] [2021-03-10 22:17:42,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:42,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:42,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:42,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:42,992 INFO L87 Difference]: Start difference. First operand 193 states and 561 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:43,072 INFO L93 Difference]: Finished difference Result 431 states and 1182 transitions. [2021-03-10 22:17:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:43,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:43,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:43,073 INFO L225 Difference]: With dead ends: 431 [2021-03-10 22:17:43,073 INFO L226 Difference]: Without dead ends: 416 [2021-03-10 22:17:43,073 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-03-10 22:17:43,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 196. [2021-03-10 22:17:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.948717948717949) internal successors, (575), 195 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 575 transitions. [2021-03-10 22:17:43,077 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 575 transitions. Word has length 17 [2021-03-10 22:17:43,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:43,077 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 575 transitions. [2021-03-10 22:17:43,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,077 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 575 transitions. [2021-03-10 22:17:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:43,078 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:43,078 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:43,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-10 22:17:43,078 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:43,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:43,078 INFO L82 PathProgramCache]: Analyzing trace with hash -729229850, now seen corresponding path program 55 times [2021-03-10 22:17:43,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:43,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915953231] [2021-03-10 22:17:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:43,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915953231] [2021-03-10 22:17:43,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:43,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:43,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105905080] [2021-03-10 22:17:43,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:43,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:43,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:43,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:43,117 INFO L87 Difference]: Start difference. First operand 196 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:43,214 INFO L93 Difference]: Finished difference Result 415 states and 1159 transitions. [2021-03-10 22:17:43,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:43,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:43,215 INFO L225 Difference]: With dead ends: 415 [2021-03-10 22:17:43,215 INFO L226 Difference]: Without dead ends: 400 [2021-03-10 22:17:43,215 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.5ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-03-10 22:17:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 193. [2021-03-10 22:17:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.921875) internal successors, (561), 192 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2021-03-10 22:17:43,220 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2021-03-10 22:17:43,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:43,222 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2021-03-10 22:17:43,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,222 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2021-03-10 22:17:43,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:43,222 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:43,222 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:43,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-10 22:17:43,222 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:43,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:43,223 INFO L82 PathProgramCache]: Analyzing trace with hash -746166902, now seen corresponding path program 56 times [2021-03-10 22:17:43,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:43,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869778129] [2021-03-10 22:17:43,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:43,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869778129] [2021-03-10 22:17:43,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:43,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:43,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873577445] [2021-03-10 22:17:43,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:43,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:43,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:43,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:43,265 INFO L87 Difference]: Start difference. First operand 193 states and 561 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:43,357 INFO L93 Difference]: Finished difference Result 449 states and 1229 transitions. [2021-03-10 22:17:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:43,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:43,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:43,358 INFO L225 Difference]: With dead ends: 449 [2021-03-10 22:17:43,359 INFO L226 Difference]: Without dead ends: 434 [2021-03-10 22:17:43,359 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:43,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-03-10 22:17:43,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 195. [2021-03-10 22:17:43,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9381443298969074) internal successors, (570), 194 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2021-03-10 22:17:43,364 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2021-03-10 22:17:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:43,364 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2021-03-10 22:17:43,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2021-03-10 22:17:43,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:43,365 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:43,365 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:43,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-10 22:17:43,365 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:43,365 INFO L82 PathProgramCache]: Analyzing trace with hash 394116934, now seen corresponding path program 57 times [2021-03-10 22:17:43,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:43,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846632967] [2021-03-10 22:17:43,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:43,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846632967] [2021-03-10 22:17:43,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:43,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:43,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603281060] [2021-03-10 22:17:43,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:43,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:43,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:43,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:43,413 INFO L87 Difference]: Start difference. First operand 195 states and 570 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:43,520 INFO L93 Difference]: Finished difference Result 428 states and 1191 transitions. [2021-03-10 22:17:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:43,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:43,521 INFO L225 Difference]: With dead ends: 428 [2021-03-10 22:17:43,521 INFO L226 Difference]: Without dead ends: 413 [2021-03-10 22:17:43,522 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-03-10 22:17:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 192. [2021-03-10 22:17:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2021-03-10 22:17:43,526 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2021-03-10 22:17:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:43,526 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2021-03-10 22:17:43,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,526 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2021-03-10 22:17:43,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:43,527 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:43,527 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:43,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-10 22:17:43,527 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:43,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:43,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1262551738, now seen corresponding path program 58 times [2021-03-10 22:17:43,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:43,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508092790] [2021-03-10 22:17:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:43,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508092790] [2021-03-10 22:17:43,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:43,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:43,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995571187] [2021-03-10 22:17:43,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:43,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:43,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:43,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:43,574 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:43,668 INFO L93 Difference]: Finished difference Result 429 states and 1161 transitions. [2021-03-10 22:17:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:43,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:43,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:43,669 INFO L225 Difference]: With dead ends: 429 [2021-03-10 22:17:43,669 INFO L226 Difference]: Without dead ends: 414 [2021-03-10 22:17:43,670 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:43,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-03-10 22:17:43,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 194. [2021-03-10 22:17:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.911917098445596) internal successors, (562), 193 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 562 transitions. [2021-03-10 22:17:43,674 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 562 transitions. Word has length 17 [2021-03-10 22:17:43,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:43,675 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 562 transitions. [2021-03-10 22:17:43,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 562 transitions. [2021-03-10 22:17:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:43,675 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:43,675 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:43,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-10 22:17:43,675 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:43,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2074864322, now seen corresponding path program 59 times [2021-03-10 22:17:43,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:43,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755691708] [2021-03-10 22:17:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:43,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755691708] [2021-03-10 22:17:43,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:43,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:43,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218022518] [2021-03-10 22:17:43,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:43,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:43,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:43,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:43,718 INFO L87 Difference]: Start difference. First operand 194 states and 562 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:43,836 INFO L93 Difference]: Finished difference Result 430 states and 1172 transitions. [2021-03-10 22:17:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:43,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:43,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:43,838 INFO L225 Difference]: With dead ends: 430 [2021-03-10 22:17:43,838 INFO L226 Difference]: Without dead ends: 415 [2021-03-10 22:17:43,838 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 72.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-03-10 22:17:43,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 196. [2021-03-10 22:17:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.928205128205128) internal successors, (571), 195 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 571 transitions. [2021-03-10 22:17:43,843 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 571 transitions. Word has length 17 [2021-03-10 22:17:43,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:43,844 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 571 transitions. [2021-03-10 22:17:43,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 571 transitions. [2021-03-10 22:17:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:43,844 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:43,844 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:43,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-10 22:17:43,845 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:43,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:43,845 INFO L82 PathProgramCache]: Analyzing trace with hash -934580486, now seen corresponding path program 60 times [2021-03-10 22:17:43,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:43,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399615120] [2021-03-10 22:17:43,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:43,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:43,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399615120] [2021-03-10 22:17:43,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:43,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:43,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039356479] [2021-03-10 22:17:43,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:43,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:43,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:43,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:43,888 INFO L87 Difference]: Start difference. First operand 196 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:43,984 INFO L93 Difference]: Finished difference Result 409 states and 1134 transitions. [2021-03-10 22:17:43,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:43,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:43,985 INFO L225 Difference]: With dead ends: 409 [2021-03-10 22:17:43,985 INFO L226 Difference]: Without dead ends: 394 [2021-03-10 22:17:43,985 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-03-10 22:17:43,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 192. [2021-03-10 22:17:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2021-03-10 22:17:43,989 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2021-03-10 22:17:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:43,989 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2021-03-10 22:17:43,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2021-03-10 22:17:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:43,989 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:43,990 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:43,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-10 22:17:43,990 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:43,990 INFO L82 PathProgramCache]: Analyzing trace with hash -674451760, now seen corresponding path program 61 times [2021-03-10 22:17:43,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:43,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461576666] [2021-03-10 22:17:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:44,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461576666] [2021-03-10 22:17:44,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:44,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:44,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173072663] [2021-03-10 22:17:44,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:44,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:44,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:44,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:44,028 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:44,129 INFO L93 Difference]: Finished difference Result 328 states and 903 transitions. [2021-03-10 22:17:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:44,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:44,130 INFO L225 Difference]: With dead ends: 328 [2021-03-10 22:17:44,130 INFO L226 Difference]: Without dead ends: 313 [2021-03-10 22:17:44,130 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 75.6ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-03-10 22:17:44,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 197. [2021-03-10 22:17:44,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.913265306122449) internal successors, (571), 196 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2021-03-10 22:17:44,133 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2021-03-10 22:17:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:44,133 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2021-03-10 22:17:44,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2021-03-10 22:17:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:44,133 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:44,133 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:44,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-10 22:17:44,134 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:44,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1924375180, now seen corresponding path program 62 times [2021-03-10 22:17:44,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:44,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710664569] [2021-03-10 22:17:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:44,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710664569] [2021-03-10 22:17:44,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:44,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:44,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371944135] [2021-03-10 22:17:44,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:44,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:44,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:44,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:44,177 INFO L87 Difference]: Start difference. First operand 197 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:44,267 INFO L93 Difference]: Finished difference Result 357 states and 963 transitions. [2021-03-10 22:17:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:44,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:44,267 INFO L225 Difference]: With dead ends: 357 [2021-03-10 22:17:44,267 INFO L226 Difference]: Without dead ends: 342 [2021-03-10 22:17:44,268 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 67.1ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-03-10 22:17:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 199. [2021-03-10 22:17:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2021-03-10 22:17:44,271 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2021-03-10 22:17:44,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:44,271 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2021-03-10 22:17:44,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,271 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2021-03-10 22:17:44,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:44,271 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:44,271 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:44,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-10 22:17:44,271 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:44,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:44,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1151956756, now seen corresponding path program 63 times [2021-03-10 22:17:44,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:44,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814832986] [2021-03-10 22:17:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:44,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814832986] [2021-03-10 22:17:44,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:44,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:44,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099947223] [2021-03-10 22:17:44,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:44,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:44,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:44,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:44,313 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:44,404 INFO L93 Difference]: Finished difference Result 334 states and 918 transitions. [2021-03-10 22:17:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:44,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:44,405 INFO L225 Difference]: With dead ends: 334 [2021-03-10 22:17:44,405 INFO L226 Difference]: Without dead ends: 319 [2021-03-10 22:17:44,405 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 64.7ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-03-10 22:17:44,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 195. [2021-03-10 22:17:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2021-03-10 22:17:44,409 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2021-03-10 22:17:44,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:44,410 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2021-03-10 22:17:44,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2021-03-10 22:17:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:44,410 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:44,410 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:44,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-10 22:17:44,410 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:44,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:44,411 INFO L82 PathProgramCache]: Analyzing trace with hash 263807996, now seen corresponding path program 64 times [2021-03-10 22:17:44,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:44,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056842852] [2021-03-10 22:17:44,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:44,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056842852] [2021-03-10 22:17:44,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:44,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:44,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271801626] [2021-03-10 22:17:44,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:44,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:44,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:44,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:44,455 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:44,568 INFO L93 Difference]: Finished difference Result 349 states and 945 transitions. [2021-03-10 22:17:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:44,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:44,569 INFO L225 Difference]: With dead ends: 349 [2021-03-10 22:17:44,569 INFO L226 Difference]: Without dead ends: 334 [2021-03-10 22:17:44,570 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 75.5ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:44,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-03-10 22:17:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 199. [2021-03-10 22:17:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2021-03-10 22:17:44,574 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2021-03-10 22:17:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:44,574 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2021-03-10 22:17:44,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2021-03-10 22:17:44,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:44,575 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:44,575 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:44,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-10 22:17:44,575 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:44,575 INFO L82 PathProgramCache]: Analyzing trace with hash -954827364, now seen corresponding path program 65 times [2021-03-10 22:17:44,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:44,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46856548] [2021-03-10 22:17:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:44,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46856548] [2021-03-10 22:17:44,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:44,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:44,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944635789] [2021-03-10 22:17:44,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:44,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:44,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:44,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:44,614 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:44,708 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2021-03-10 22:17:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:44,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:44,709 INFO L225 Difference]: With dead ends: 353 [2021-03-10 22:17:44,709 INFO L226 Difference]: Without dead ends: 338 [2021-03-10 22:17:44,709 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-03-10 22:17:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 197. [2021-03-10 22:17:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.913265306122449) internal successors, (571), 196 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2021-03-10 22:17:44,713 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2021-03-10 22:17:44,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:44,713 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2021-03-10 22:17:44,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2021-03-10 22:17:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:44,713 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:44,713 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:44,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-10 22:17:44,714 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:44,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:44,714 INFO L82 PathProgramCache]: Analyzing trace with hash 120883792, now seen corresponding path program 66 times [2021-03-10 22:17:44,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:44,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291508142] [2021-03-10 22:17:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:44,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291508142] [2021-03-10 22:17:44,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:44,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:44,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398012883] [2021-03-10 22:17:44,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:44,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:44,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:44,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:44,751 INFO L87 Difference]: Start difference. First operand 197 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:44,842 INFO L93 Difference]: Finished difference Result 324 states and 891 transitions. [2021-03-10 22:17:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:44,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:44,843 INFO L225 Difference]: With dead ends: 324 [2021-03-10 22:17:44,843 INFO L226 Difference]: Without dead ends: 309 [2021-03-10 22:17:44,843 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:44,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-03-10 22:17:44,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 195. [2021-03-10 22:17:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2021-03-10 22:17:44,847 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2021-03-10 22:17:44,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:44,847 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2021-03-10 22:17:44,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,847 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2021-03-10 22:17:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:44,848 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:44,848 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:44,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-10 22:17:44,848 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:44,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:44,848 INFO L82 PathProgramCache]: Analyzing trace with hash 409284692, now seen corresponding path program 67 times [2021-03-10 22:17:44,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:44,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613254026] [2021-03-10 22:17:44,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:44,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613254026] [2021-03-10 22:17:44,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:44,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:44,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975482728] [2021-03-10 22:17:44,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:44,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:44,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:44,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:44,890 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:44,999 INFO L93 Difference]: Finished difference Result 442 states and 1201 transitions. [2021-03-10 22:17:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:44,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:45,000 INFO L225 Difference]: With dead ends: 442 [2021-03-10 22:17:45,000 INFO L226 Difference]: Without dead ends: 427 [2021-03-10 22:17:45,000 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-03-10 22:17:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 198. [2021-03-10 22:17:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2021-03-10 22:17:45,010 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2021-03-10 22:17:45,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:45,010 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2021-03-10 22:17:45,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,010 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2021-03-10 22:17:45,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:45,011 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:45,011 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:45,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-10 22:17:45,011 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:45,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:45,012 INFO L82 PathProgramCache]: Analyzing trace with hash -840638728, now seen corresponding path program 68 times [2021-03-10 22:17:45,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:45,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739622028] [2021-03-10 22:17:45,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:45,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739622028] [2021-03-10 22:17:45,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:45,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:45,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240356223] [2021-03-10 22:17:45,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:45,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:45,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:45,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:45,056 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:45,157 INFO L93 Difference]: Finished difference Result 465 states and 1248 transitions. [2021-03-10 22:17:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:45,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:45,158 INFO L225 Difference]: With dead ends: 465 [2021-03-10 22:17:45,158 INFO L226 Difference]: Without dead ends: 450 [2021-03-10 22:17:45,158 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-03-10 22:17:45,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 200. [2021-03-10 22:17:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2021-03-10 22:17:45,162 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2021-03-10 22:17:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:45,162 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2021-03-10 22:17:45,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2021-03-10 22:17:45,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:45,163 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:45,163 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:45,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-10 22:17:45,163 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:45,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2059274088, now seen corresponding path program 69 times [2021-03-10 22:17:45,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:45,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053744614] [2021-03-10 22:17:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:45,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053744614] [2021-03-10 22:17:45,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:45,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:45,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842426601] [2021-03-10 22:17:45,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:45,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:45,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:45,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:45,219 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:45,345 INFO L93 Difference]: Finished difference Result 442 states and 1203 transitions. [2021-03-10 22:17:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:45,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:45,346 INFO L225 Difference]: With dead ends: 442 [2021-03-10 22:17:45,346 INFO L226 Difference]: Without dead ends: 427 [2021-03-10 22:17:45,346 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 69.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-03-10 22:17:45,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 196. [2021-03-10 22:17:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2021-03-10 22:17:45,352 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2021-03-10 22:17:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:45,352 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2021-03-10 22:17:45,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,352 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2021-03-10 22:17:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:45,354 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:45,354 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:45,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-10 22:17:45,354 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:45,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:45,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1005390608, now seen corresponding path program 70 times [2021-03-10 22:17:45,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:45,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748847283] [2021-03-10 22:17:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:45,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748847283] [2021-03-10 22:17:45,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:45,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:45,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412291913] [2021-03-10 22:17:45,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:45,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:45,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:45,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:45,393 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:45,500 INFO L93 Difference]: Finished difference Result 393 states and 1085 transitions. [2021-03-10 22:17:45,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:45,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:45,501 INFO L225 Difference]: With dead ends: 393 [2021-03-10 22:17:45,501 INFO L226 Difference]: Without dead ends: 378 [2021-03-10 22:17:45,501 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 65.5ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:45,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-03-10 22:17:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 199. [2021-03-10 22:17:45,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2021-03-10 22:17:45,507 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2021-03-10 22:17:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:45,508 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2021-03-10 22:17:45,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,508 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2021-03-10 22:17:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:45,508 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:45,508 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:45,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-10 22:17:45,508 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:45,509 INFO L82 PathProgramCache]: Analyzing trace with hash 184219092, now seen corresponding path program 71 times [2021-03-10 22:17:45,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:45,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751910934] [2021-03-10 22:17:45,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:45,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751910934] [2021-03-10 22:17:45,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:45,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:45,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763403376] [2021-03-10 22:17:45,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:45,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:45,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:45,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:45,551 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:45,670 INFO L93 Difference]: Finished difference Result 391 states and 1089 transitions. [2021-03-10 22:17:45,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:45,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:45,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:45,671 INFO L225 Difference]: With dead ends: 391 [2021-03-10 22:17:45,671 INFO L226 Difference]: Without dead ends: 376 [2021-03-10 22:17:45,672 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 71.8ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:45,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-03-10 22:17:45,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 202. [2021-03-10 22:17:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.955223880597015) internal successors, (594), 201 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 594 transitions. [2021-03-10 22:17:45,676 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 594 transitions. Word has length 17 [2021-03-10 22:17:45,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:45,677 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 594 transitions. [2021-03-10 22:17:45,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 594 transitions. [2021-03-10 22:17:45,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:45,677 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:45,677 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:45,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-10 22:17:45,677 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:45,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:45,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1514501296, now seen corresponding path program 72 times [2021-03-10 22:17:45,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:45,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191616197] [2021-03-10 22:17:45,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:45,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191616197] [2021-03-10 22:17:45,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:45,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:45,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438511489] [2021-03-10 22:17:45,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:45,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:45,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:45,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:45,720 INFO L87 Difference]: Start difference. First operand 202 states and 594 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:45,819 INFO L93 Difference]: Finished difference Result 368 states and 1044 transitions. [2021-03-10 22:17:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:45,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:45,821 INFO L225 Difference]: With dead ends: 368 [2021-03-10 22:17:45,821 INFO L226 Difference]: Without dead ends: 353 [2021-03-10 22:17:45,821 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-03-10 22:17:45,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 196. [2021-03-10 22:17:45,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2021-03-10 22:17:45,825 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2021-03-10 22:17:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:45,826 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2021-03-10 22:17:45,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2021-03-10 22:17:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:45,831 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:45,831 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:45,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-10 22:17:45,831 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:45,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:45,832 INFO L82 PathProgramCache]: Analyzing trace with hash 81063412, now seen corresponding path program 73 times [2021-03-10 22:17:45,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:45,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568063667] [2021-03-10 22:17:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:45,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568063667] [2021-03-10 22:17:45,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:45,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:45,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748836078] [2021-03-10 22:17:45,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:45,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:45,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:45,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:45,872 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:45,978 INFO L93 Difference]: Finished difference Result 445 states and 1229 transitions. [2021-03-10 22:17:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:45,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:45,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:45,979 INFO L225 Difference]: With dead ends: 445 [2021-03-10 22:17:45,979 INFO L226 Difference]: Without dead ends: 430 [2021-03-10 22:17:45,979 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-03-10 22:17:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 199. [2021-03-10 22:17:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2021-03-10 22:17:45,983 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2021-03-10 22:17:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:45,983 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2021-03-10 22:17:45,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2021-03-10 22:17:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:45,984 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:45,984 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:45,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-10 22:17:45,984 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:45,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:45,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1137571948, now seen corresponding path program 74 times [2021-03-10 22:17:45,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:45,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584809458] [2021-03-10 22:17:45,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:46,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584809458] [2021-03-10 22:17:46,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:46,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:46,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83672786] [2021-03-10 22:17:46,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:46,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:46,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:46,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:46,026 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:46,119 INFO L93 Difference]: Finished difference Result 443 states and 1222 transitions. [2021-03-10 22:17:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:46,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:46,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:46,120 INFO L225 Difference]: With dead ends: 443 [2021-03-10 22:17:46,120 INFO L226 Difference]: Without dead ends: 428 [2021-03-10 22:17:46,120 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:46,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-03-10 22:17:46,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 197. [2021-03-10 22:17:46,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2021-03-10 22:17:46,124 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2021-03-10 22:17:46,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:46,124 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2021-03-10 22:17:46,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2021-03-10 22:17:46,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:46,125 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:46,125 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:46,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-10 22:17:46,125 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:46,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:46,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1070123960, now seen corresponding path program 75 times [2021-03-10 22:17:46,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:46,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423164631] [2021-03-10 22:17:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:46,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423164631] [2021-03-10 22:17:46,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:46,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:46,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678292591] [2021-03-10 22:17:46,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:46,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:46,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:46,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:46,167 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:46,261 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2021-03-10 22:17:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:46,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:46,261 INFO L225 Difference]: With dead ends: 437 [2021-03-10 22:17:46,261 INFO L226 Difference]: Without dead ends: 422 [2021-03-10 22:17:46,262 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-03-10 22:17:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 200. [2021-03-10 22:17:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.959798994974874) internal successors, (589), 199 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2021-03-10 22:17:46,265 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2021-03-10 22:17:46,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:46,266 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2021-03-10 22:17:46,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2021-03-10 22:17:46,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:46,266 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:46,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:46,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-10 22:17:46,266 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:46,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:46,267 INFO L82 PathProgramCache]: Analyzing trace with hash -100065036, now seen corresponding path program 76 times [2021-03-10 22:17:46,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:46,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085501027] [2021-03-10 22:17:46,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:46,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085501027] [2021-03-10 22:17:46,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:46,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:46,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851238795] [2021-03-10 22:17:46,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:46,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:46,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:46,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:46,307 INFO L87 Difference]: Start difference. First operand 200 states and 589 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:46,406 INFO L93 Difference]: Finished difference Result 421 states and 1178 transitions. [2021-03-10 22:17:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:46,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:46,407 INFO L225 Difference]: With dead ends: 421 [2021-03-10 22:17:46,407 INFO L226 Difference]: Without dead ends: 406 [2021-03-10 22:17:46,407 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-03-10 22:17:46,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 197. [2021-03-10 22:17:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2021-03-10 22:17:46,410 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2021-03-10 22:17:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:46,410 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2021-03-10 22:17:46,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2021-03-10 22:17:46,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:46,410 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:46,410 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:46,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-10 22:17:46,411 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:46,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:46,411 INFO L82 PathProgramCache]: Analyzing trace with hash -117002088, now seen corresponding path program 77 times [2021-03-10 22:17:46,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:46,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432321914] [2021-03-10 22:17:46,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:46,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432321914] [2021-03-10 22:17:46,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:46,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:46,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488684407] [2021-03-10 22:17:46,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:46,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:46,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:46,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:46,453 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:46,571 INFO L93 Difference]: Finished difference Result 405 states and 1129 transitions. [2021-03-10 22:17:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:46,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:46,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:46,572 INFO L225 Difference]: With dead ends: 405 [2021-03-10 22:17:46,572 INFO L226 Difference]: Without dead ends: 390 [2021-03-10 22:17:46,572 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:46,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-03-10 22:17:46,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 199. [2021-03-10 22:17:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2021-03-10 22:17:46,577 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2021-03-10 22:17:46,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:46,577 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2021-03-10 22:17:46,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,577 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2021-03-10 22:17:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:46,577 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:46,578 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:46,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-10 22:17:46,578 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:46,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:46,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1023281748, now seen corresponding path program 78 times [2021-03-10 22:17:46,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:46,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668332189] [2021-03-10 22:17:46,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:46,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668332189] [2021-03-10 22:17:46,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:46,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:46,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747237907] [2021-03-10 22:17:46,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:46,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:46,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:46,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:46,632 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:46,737 INFO L93 Difference]: Finished difference Result 384 states and 1091 transitions. [2021-03-10 22:17:46,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:46,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:46,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:46,737 INFO L225 Difference]: With dead ends: 384 [2021-03-10 22:17:46,738 INFO L226 Difference]: Without dead ends: 369 [2021-03-10 22:17:46,738 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 68.7ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:46,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-03-10 22:17:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 195. [2021-03-10 22:17:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2021-03-10 22:17:46,742 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2021-03-10 22:17:46,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:46,742 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2021-03-10 22:17:46,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2021-03-10 22:17:46,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:46,742 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:46,742 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:46,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-10 22:17:46,742 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:46,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:46,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1228196736, now seen corresponding path program 79 times [2021-03-10 22:17:46,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:46,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212071892] [2021-03-10 22:17:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:46,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212071892] [2021-03-10 22:17:46,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:46,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:46,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441367811] [2021-03-10 22:17:46,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:46,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:46,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:46,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:46,788 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:46,907 INFO L93 Difference]: Finished difference Result 425 states and 1163 transitions. [2021-03-10 22:17:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:46,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:46,908 INFO L225 Difference]: With dead ends: 425 [2021-03-10 22:17:46,908 INFO L226 Difference]: Without dead ends: 410 [2021-03-10 22:17:46,908 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:46,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-03-10 22:17:46,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 200. [2021-03-10 22:17:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2021-03-10 22:17:46,911 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2021-03-10 22:17:46,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:46,911 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2021-03-10 22:17:46,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2021-03-10 22:17:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:46,912 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:46,912 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:46,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-10 22:17:46,912 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:46,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:46,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1848135200, now seen corresponding path program 80 times [2021-03-10 22:17:46,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:46,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293184733] [2021-03-10 22:17:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:46,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293184733] [2021-03-10 22:17:46,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:46,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:46,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238341647] [2021-03-10 22:17:46,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:46,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:46,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:46,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:46,956 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:47,057 INFO L93 Difference]: Finished difference Result 429 states and 1169 transitions. [2021-03-10 22:17:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:47,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:47,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:47,058 INFO L225 Difference]: With dead ends: 429 [2021-03-10 22:17:47,058 INFO L226 Difference]: Without dead ends: 414 [2021-03-10 22:17:47,058 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:47,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-03-10 22:17:47,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 198. [2021-03-10 22:17:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2021-03-10 22:17:47,061 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2021-03-10 22:17:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:47,061 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2021-03-10 22:17:47,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,061 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2021-03-10 22:17:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:47,061 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:47,061 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:47,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-10 22:17:47,061 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:47,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1371120940, now seen corresponding path program 81 times [2021-03-10 22:17:47,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:47,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697916903] [2021-03-10 22:17:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:47,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697916903] [2021-03-10 22:17:47,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:47,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:47,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117571852] [2021-03-10 22:17:47,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:47,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:47,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:47,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:47,107 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:47,190 INFO L93 Difference]: Finished difference Result 429 states and 1163 transitions. [2021-03-10 22:17:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:47,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:47,191 INFO L225 Difference]: With dead ends: 429 [2021-03-10 22:17:47,191 INFO L226 Difference]: Without dead ends: 414 [2021-03-10 22:17:47,191 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:47,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-03-10 22:17:47,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 196. [2021-03-10 22:17:47,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2021-03-10 22:17:47,194 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2021-03-10 22:17:47,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:47,194 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2021-03-10 22:17:47,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2021-03-10 22:17:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:47,194 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:47,194 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:47,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-10 22:17:47,195 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:47,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:47,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1608879492, now seen corresponding path program 82 times [2021-03-10 22:17:47,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:47,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489543242] [2021-03-10 22:17:47,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:47,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489543242] [2021-03-10 22:17:47,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:47,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:47,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733657401] [2021-03-10 22:17:47,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:47,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:47,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:47,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:47,243 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:47,362 INFO L93 Difference]: Finished difference Result 451 states and 1224 transitions. [2021-03-10 22:17:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:47,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:47,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:47,363 INFO L225 Difference]: With dead ends: 451 [2021-03-10 22:17:47,363 INFO L226 Difference]: Without dead ends: 436 [2021-03-10 22:17:47,363 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:47,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-03-10 22:17:47,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 199. [2021-03-10 22:17:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2021-03-10 22:17:47,368 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2021-03-10 22:17:47,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:47,368 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2021-03-10 22:17:47,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,368 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2021-03-10 22:17:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:47,369 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:47,369 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:47,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-10 22:17:47,369 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:47,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1467452444, now seen corresponding path program 83 times [2021-03-10 22:17:47,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:47,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125459957] [2021-03-10 22:17:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:47,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125459957] [2021-03-10 22:17:47,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:47,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:47,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392502841] [2021-03-10 22:17:47,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:47,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:47,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:47,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:47,411 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:47,527 INFO L93 Difference]: Finished difference Result 455 states and 1230 transitions. [2021-03-10 22:17:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:47,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:47,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:47,528 INFO L225 Difference]: With dead ends: 455 [2021-03-10 22:17:47,528 INFO L226 Difference]: Without dead ends: 440 [2021-03-10 22:17:47,528 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:47,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-03-10 22:17:47,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 197. [2021-03-10 22:17:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2021-03-10 22:17:47,533 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2021-03-10 22:17:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:47,533 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2021-03-10 22:17:47,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2021-03-10 22:17:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:47,533 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:47,533 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:47,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-10 22:17:47,533 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:47,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:47,534 INFO L82 PathProgramCache]: Analyzing trace with hash -619818944, now seen corresponding path program 84 times [2021-03-10 22:17:47,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:47,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132146558] [2021-03-10 22:17:47,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:47,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132146558] [2021-03-10 22:17:47,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:47,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:47,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353704457] [2021-03-10 22:17:47,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:47,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:47,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:47,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:47,587 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:47,694 INFO L93 Difference]: Finished difference Result 422 states and 1158 transitions. [2021-03-10 22:17:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:47,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:47,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:47,695 INFO L225 Difference]: With dead ends: 422 [2021-03-10 22:17:47,695 INFO L226 Difference]: Without dead ends: 407 [2021-03-10 22:17:47,695 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.9ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:47,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-03-10 22:17:47,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 200. [2021-03-10 22:17:47,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.959798994974874) internal successors, (589), 199 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2021-03-10 22:17:47,698 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2021-03-10 22:17:47,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:47,698 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2021-03-10 22:17:47,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,698 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2021-03-10 22:17:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:47,698 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:47,698 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:47,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-10 22:17:47,698 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:47,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1790007940, now seen corresponding path program 85 times [2021-03-10 22:17:47,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:47,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475055322] [2021-03-10 22:17:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:47,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475055322] [2021-03-10 22:17:47,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:47,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:47,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790162206] [2021-03-10 22:17:47,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:47,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:47,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:47,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:47,741 INFO L87 Difference]: Start difference. First operand 200 states and 589 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:47,829 INFO L93 Difference]: Finished difference Result 406 states and 1135 transitions. [2021-03-10 22:17:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:47,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:47,830 INFO L225 Difference]: With dead ends: 406 [2021-03-10 22:17:47,830 INFO L226 Difference]: Without dead ends: 391 [2021-03-10 22:17:47,830 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.9ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:47,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-03-10 22:17:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 197. [2021-03-10 22:17:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2021-03-10 22:17:47,833 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2021-03-10 22:17:47,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:47,833 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2021-03-10 22:17:47,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2021-03-10 22:17:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:47,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:47,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:47,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-10 22:17:47,834 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:47,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:47,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1806944992, now seen corresponding path program 86 times [2021-03-10 22:17:47,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:47,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984833621] [2021-03-10 22:17:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:47,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984833621] [2021-03-10 22:17:47,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:47,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:47,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725995268] [2021-03-10 22:17:47,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:47,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:47,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:47,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:47,881 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:48,004 INFO L93 Difference]: Finished difference Result 440 states and 1205 transitions. [2021-03-10 22:17:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:48,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:48,005 INFO L225 Difference]: With dead ends: 440 [2021-03-10 22:17:48,006 INFO L226 Difference]: Without dead ends: 425 [2021-03-10 22:17:48,006 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-03-10 22:17:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 199. [2021-03-10 22:17:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2021-03-10 22:17:48,010 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2021-03-10 22:17:48,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:48,010 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2021-03-10 22:17:48,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,010 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2021-03-10 22:17:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:48,010 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:48,010 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:48,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-10 22:17:48,010 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:48,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:48,011 INFO L82 PathProgramCache]: Analyzing trace with hash -666661156, now seen corresponding path program 87 times [2021-03-10 22:17:48,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:48,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217323381] [2021-03-10 22:17:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:48,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217323381] [2021-03-10 22:17:48,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:48,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:48,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496347978] [2021-03-10 22:17:48,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:48,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:48,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:48,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:48,052 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:48,157 INFO L93 Difference]: Finished difference Result 419 states and 1167 transitions. [2021-03-10 22:17:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:48,157 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:48,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:48,158 INFO L225 Difference]: With dead ends: 419 [2021-03-10 22:17:48,158 INFO L226 Difference]: Without dead ends: 404 [2021-03-10 22:17:48,158 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-03-10 22:17:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 196. [2021-03-10 22:17:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2021-03-10 22:17:48,162 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2021-03-10 22:17:48,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:48,162 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2021-03-10 22:17:48,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,162 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2021-03-10 22:17:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:48,162 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:48,162 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:48,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-10 22:17:48,163 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:48,163 INFO L82 PathProgramCache]: Analyzing trace with hash 201773648, now seen corresponding path program 88 times [2021-03-10 22:17:48,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:48,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475911632] [2021-03-10 22:17:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:48,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475911632] [2021-03-10 22:17:48,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:48,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:48,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266060933] [2021-03-10 22:17:48,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:48,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:48,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:48,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:48,202 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:48,310 INFO L93 Difference]: Finished difference Result 382 states and 1052 transitions. [2021-03-10 22:17:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:48,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:48,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:48,311 INFO L225 Difference]: With dead ends: 382 [2021-03-10 22:17:48,311 INFO L226 Difference]: Without dead ends: 367 [2021-03-10 22:17:48,312 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-03-10 22:17:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 198. [2021-03-10 22:17:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2021-03-10 22:17:48,315 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2021-03-10 22:17:48,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:48,315 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2021-03-10 22:17:48,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,316 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2021-03-10 22:17:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:48,318 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:48,318 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:48,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-10 22:17:48,318 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:48,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:48,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1159324884, now seen corresponding path program 89 times [2021-03-10 22:17:48,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:48,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355235621] [2021-03-10 22:17:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:48,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355235621] [2021-03-10 22:17:48,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:48,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:48,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094732369] [2021-03-10 22:17:48,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:48,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:48,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:48,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:48,363 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:48,490 INFO L93 Difference]: Finished difference Result 383 states and 1063 transitions. [2021-03-10 22:17:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:48,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:48,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:48,491 INFO L225 Difference]: With dead ends: 383 [2021-03-10 22:17:48,491 INFO L226 Difference]: Without dead ends: 368 [2021-03-10 22:17:48,491 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 67.3ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:48,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-03-10 22:17:48,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 200. [2021-03-10 22:17:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2021-03-10 22:17:48,494 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2021-03-10 22:17:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:48,494 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2021-03-10 22:17:48,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2021-03-10 22:17:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 22:17:48,494 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:48,494 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:48,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-10 22:17:48,494 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:48,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1995358576, now seen corresponding path program 90 times [2021-03-10 22:17:48,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:48,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501451734] [2021-03-10 22:17:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:48,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501451734] [2021-03-10 22:17:48,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:48,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:48,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744266] [2021-03-10 22:17:48,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:48,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:48,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:48,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:48,536 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:48,646 INFO L93 Difference]: Finished difference Result 362 states and 1025 transitions. [2021-03-10 22:17:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:48,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-10 22:17:48,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:48,647 INFO L225 Difference]: With dead ends: 362 [2021-03-10 22:17:48,647 INFO L226 Difference]: Without dead ends: 347 [2021-03-10 22:17:48,647 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:48,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-03-10 22:17:48,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 195. [2021-03-10 22:17:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2021-03-10 22:17:48,650 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2021-03-10 22:17:48,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:48,650 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2021-03-10 22:17:48,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,650 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2021-03-10 22:17:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:48,650 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:48,650 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:48,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-10 22:17:48,650 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:48,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1303103675, now seen corresponding path program 1 times [2021-03-10 22:17:48,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:48,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373330643] [2021-03-10 22:17:48,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:48,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373330643] [2021-03-10 22:17:48,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444165561] [2021-03-10 22:17:48,715 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 [2021-03-10 22:17:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:48,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 22:17:48,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:48,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:48,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-03-10 22:17:48,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810419964] [2021-03-10 22:17:48,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 22:17:48,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:48,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 22:17:48,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:48,953 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-03-10 22:17:49,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:49,133 INFO L93 Difference]: Finished difference Result 363 states and 1031 transitions. [2021-03-10 22:17:49,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:49,133 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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 18 [2021-03-10 22:17:49,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:49,143 INFO L225 Difference]: With dead ends: 363 [2021-03-10 22:17:49,143 INFO L226 Difference]: Without dead ends: 344 [2021-03-10 22:17:49,143 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 154.3ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:17:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-03-10 22:17:49,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 208. [2021-03-10 22:17:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9613526570048307) internal successors, (613), 207 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 613 transitions. [2021-03-10 22:17:49,151 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 613 transitions. Word has length 18 [2021-03-10 22:17:49,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:49,151 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 613 transitions. [2021-03-10 22:17:49,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-03-10 22:17:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 613 transitions. [2021-03-10 22:17:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:49,151 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:49,152 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:49,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-03-10 22:17:49,373 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:49,374 INFO L82 PathProgramCache]: Analyzing trace with hash -95550603, now seen corresponding path program 2 times [2021-03-10 22:17:49,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:49,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530607986] [2021-03-10 22:17:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:49,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530607986] [2021-03-10 22:17:49,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769873712] [2021-03-10 22:17:49,408 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 [2021-03-10 22:17:49,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:17:49,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:49,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:17:49,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:49,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:49,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-03-10 22:17:49,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960481122] [2021-03-10 22:17:49,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:17:49,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:49,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:17:49,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:49,547 INFO L87 Difference]: Start difference. First operand 208 states and 613 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-03-10 22:17:49,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:49,604 INFO L93 Difference]: Finished difference Result 354 states and 1020 transitions. [2021-03-10 22:17:49,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:17:49,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 18 [2021-03-10 22:17:49,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:49,606 INFO L225 Difference]: With dead ends: 354 [2021-03-10 22:17:49,606 INFO L226 Difference]: Without dead ends: 319 [2021-03-10 22:17:49,606 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:17:49,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-03-10 22:17:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 216. [2021-03-10 22:17:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.9813953488372094) internal successors, (641), 215 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 641 transitions. [2021-03-10 22:17:49,611 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 641 transitions. Word has length 18 [2021-03-10 22:17:49,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:49,611 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 641 transitions. [2021-03-10 22:17:49,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-03-10 22:17:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 641 transitions. [2021-03-10 22:17:49,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:49,612 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:49,612 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:49,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-03-10 22:17:49,827 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:49,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:49,827 INFO L82 PathProgramCache]: Analyzing trace with hash -725187835, now seen corresponding path program 1 times [2021-03-10 22:17:49,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:49,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738269723] [2021-03-10 22:17:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:49,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738269723] [2021-03-10 22:17:49,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983803640] [2021-03-10 22:17:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-03-10 22:17:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:49,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 22:17:49,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:50,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:50,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-03-10 22:17:50,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592294081] [2021-03-10 22:17:50,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 22:17:50,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:50,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 22:17:50,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:50,066 INFO L87 Difference]: Start difference. First operand 216 states and 641 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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) [2021-03-10 22:17:50,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:50,362 INFO L93 Difference]: Finished difference Result 382 states and 1057 transitions. [2021-03-10 22:17:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:50,362 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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 18 [2021-03-10 22:17:50,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:50,363 INFO L225 Difference]: With dead ends: 382 [2021-03-10 22:17:50,363 INFO L226 Difference]: Without dead ends: 342 [2021-03-10 22:17:50,363 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 284.9ms TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:17:50,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-03-10 22:17:50,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 221. [2021-03-10 22:17:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.9727272727272727) internal successors, (654), 220 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 654 transitions. [2021-03-10 22:17:50,367 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 654 transitions. Word has length 18 [2021-03-10 22:17:50,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:50,368 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 654 transitions. [2021-03-10 22:17:50,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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) [2021-03-10 22:17:50,368 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 654 transitions. [2021-03-10 22:17:50,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:50,368 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:50,368 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:50,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-03-10 22:17:50,587 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:50,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:50,588 INFO L82 PathProgramCache]: Analyzing trace with hash -809235458, now seen corresponding path program 1 times [2021-03-10 22:17:50,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:50,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350991390] [2021-03-10 22:17:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:50,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350991390] [2021-03-10 22:17:50,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889815978] [2021-03-10 22:17:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-03-10 22:17:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:50,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:17:50,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:50,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:50,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-03-10 22:17:50,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524671614] [2021-03-10 22:17:50,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:17:50,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:50,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:17:50,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:50,763 INFO L87 Difference]: Start difference. First operand 221 states and 654 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:50,903 INFO L93 Difference]: Finished difference Result 389 states and 1088 transitions. [2021-03-10 22:17:50,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:17:50,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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 [2021-03-10 22:17:50,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:50,904 INFO L225 Difference]: With dead ends: 389 [2021-03-10 22:17:50,904 INFO L226 Difference]: Without dead ends: 330 [2021-03-10 22:17:50,904 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.3ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-03-10 22:17:50,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 239. [2021-03-10 22:17:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 2.936974789915966) internal successors, (699), 238 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 699 transitions. [2021-03-10 22:17:50,909 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 699 transitions. Word has length 18 [2021-03-10 22:17:50,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:50,909 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 699 transitions. [2021-03-10 22:17:50,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 699 transitions. [2021-03-10 22:17:50,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:50,910 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:50,910 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:51,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:17:51,132 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:51,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1122105489, now seen corresponding path program 2 times [2021-03-10 22:17:51,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:51,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866291618] [2021-03-10 22:17:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:51,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866291618] [2021-03-10 22:17:51,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136709713] [2021-03-10 22:17:51,219 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 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 [2021-03-10 22:17:51,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:17:51,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:51,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:17:51,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:51,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:51,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:51,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2021-03-10 22:17:51,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002951807] [2021-03-10 22:17:51,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 22:17:51,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:51,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 22:17:51,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:51,358 INFO L87 Difference]: Start difference. First operand 239 states and 699 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 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) [2021-03-10 22:17:51,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:51,884 INFO L93 Difference]: Finished difference Result 711 states and 1983 transitions. [2021-03-10 22:17:51,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 22:17:51,885 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 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 18 [2021-03-10 22:17:51,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:51,886 INFO L225 Difference]: With dead ends: 711 [2021-03-10 22:17:51,886 INFO L226 Difference]: Without dead ends: 612 [2021-03-10 22:17:51,886 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 361.4ms TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-03-10 22:17:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-10 22:17:51,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 271. [2021-03-10 22:17:51,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.0555555555555554) internal successors, (825), 270 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 825 transitions. [2021-03-10 22:17:51,893 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 825 transitions. Word has length 18 [2021-03-10 22:17:51,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:51,893 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 825 transitions. [2021-03-10 22:17:51,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 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) [2021-03-10 22:17:51,893 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 825 transitions. [2021-03-10 22:17:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:51,894 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:51,894 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:52,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-03-10 22:17:52,115 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:52,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:52,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1300893727, now seen corresponding path program 3 times [2021-03-10 22:17:52,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:52,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442986164] [2021-03-10 22:17:52,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:52,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442986164] [2021-03-10 22:17:52,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770616745] [2021-03-10 22:17:52,192 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 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 [2021-03-10 22:17:52,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 22:17:52,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:52,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:17:52,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:52,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:52,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-03-10 22:17:52,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087845039] [2021-03-10 22:17:52,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 22:17:52,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:52,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 22:17:52,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:52,317 INFO L87 Difference]: Start difference. First operand 271 states and 825 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) [2021-03-10 22:17:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:52,816 INFO L93 Difference]: Finished difference Result 703 states and 1933 transitions. [2021-03-10 22:17:52,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 22:17:52,816 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 18 [2021-03-10 22:17:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:52,817 INFO L225 Difference]: With dead ends: 703 [2021-03-10 22:17:52,817 INFO L226 Difference]: Without dead ends: 610 [2021-03-10 22:17:52,818 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 384.8ms TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-03-10 22:17:52,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-10 22:17:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 273. [2021-03-10 22:17:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 3.0183823529411766) internal successors, (821), 272 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 821 transitions. [2021-03-10 22:17:52,824 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 821 transitions. Word has length 18 [2021-03-10 22:17:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:52,824 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 821 transitions. [2021-03-10 22:17:52,824 INFO L481 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) [2021-03-10 22:17:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 821 transitions. [2021-03-10 22:17:52,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:52,825 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:52,825 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:53,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:17:53,039 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:53,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:53,040 INFO L82 PathProgramCache]: Analyzing trace with hash -505958907, now seen corresponding path program 4 times [2021-03-10 22:17:53,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:53,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337172688] [2021-03-10 22:17:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:53,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337172688] [2021-03-10 22:17:53,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184821212] [2021-03-10 22:17:53,105 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 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 [2021-03-10 22:17:53,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 22:17:53,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:53,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 22:17:53,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:53,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:53,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-03-10 22:17:53,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640227946] [2021-03-10 22:17:53,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 22:17:53,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:53,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 22:17:53,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:17:53,230 INFO L87 Difference]: Start difference. First operand 273 states and 821 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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) [2021-03-10 22:17:53,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:53,416 INFO L93 Difference]: Finished difference Result 491 states and 1371 transitions. [2021-03-10 22:17:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:53,417 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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 18 [2021-03-10 22:17:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:53,417 INFO L225 Difference]: With dead ends: 491 [2021-03-10 22:17:53,417 INFO L226 Difference]: Without dead ends: 451 [2021-03-10 22:17:53,417 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 200.7ms TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:17:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-03-10 22:17:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 276. [2021-03-10 22:17:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 3.0036363636363634) internal successors, (826), 275 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 826 transitions. [2021-03-10 22:17:53,423 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 826 transitions. Word has length 18 [2021-03-10 22:17:53,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:53,423 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 826 transitions. [2021-03-10 22:17:53,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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) [2021-03-10 22:17:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 826 transitions. [2021-03-10 22:17:53,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:53,423 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:53,424 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:53,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-03-10 22:17:53,641 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:53,642 INFO L82 PathProgramCache]: Analyzing trace with hash -534360167, now seen corresponding path program 5 times [2021-03-10 22:17:53,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:53,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287530396] [2021-03-10 22:17:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:53,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287530396] [2021-03-10 22:17:53,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990298130] [2021-03-10 22:17:53,715 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 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 [2021-03-10 22:17:53,737 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:17:53,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:53,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 22:17:53,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:53,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:53,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-03-10 22:17:53,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438757821] [2021-03-10 22:17:53,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 22:17:53,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:53,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 22:17:53,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:17:53,842 INFO L87 Difference]: Start difference. First operand 276 states and 826 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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) [2021-03-10 22:17:54,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:54,073 INFO L93 Difference]: Finished difference Result 462 states and 1278 transitions. [2021-03-10 22:17:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:54,074 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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 18 [2021-03-10 22:17:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:54,075 INFO L225 Difference]: With dead ends: 462 [2021-03-10 22:17:54,075 INFO L226 Difference]: Without dead ends: 431 [2021-03-10 22:17:54,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 245.5ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:17:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-03-10 22:17:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 279. [2021-03-10 22:17:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 2.9892086330935252) internal successors, (831), 278 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 831 transitions. [2021-03-10 22:17:54,080 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 831 transitions. Word has length 18 [2021-03-10 22:17:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:54,081 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 831 transitions. [2021-03-10 22:17:54,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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) [2021-03-10 22:17:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 831 transitions. [2021-03-10 22:17:54,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:54,081 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:54,081 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:54,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-03-10 22:17:54,283 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:54,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:54,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1888639049, now seen corresponding path program 6 times [2021-03-10 22:17:54,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:54,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617199426] [2021-03-10 22:17:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:54,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617199426] [2021-03-10 22:17:54,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963962150] [2021-03-10 22:17:54,352 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 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 [2021-03-10 22:17:54,381 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 22:17:54,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:54,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:17:54,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:54,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:54,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-03-10 22:17:54,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147123513] [2021-03-10 22:17:54,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 22:17:54,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:54,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 22:17:54,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:54,473 INFO L87 Difference]: Start difference. First operand 279 states and 831 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) [2021-03-10 22:17:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:54,954 INFO L93 Difference]: Finished difference Result 579 states and 1609 transitions. [2021-03-10 22:17:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 22:17:54,954 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 18 [2021-03-10 22:17:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:54,955 INFO L225 Difference]: With dead ends: 579 [2021-03-10 22:17:54,955 INFO L226 Difference]: Without dead ends: 481 [2021-03-10 22:17:54,955 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 368.4ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-03-10 22:17:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-03-10 22:17:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 277. [2021-03-10 22:17:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 3.0543478260869565) internal successors, (843), 276 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 843 transitions. [2021-03-10 22:17:54,959 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 843 transitions. Word has length 18 [2021-03-10 22:17:54,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:54,960 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 843 transitions. [2021-03-10 22:17:54,960 INFO L481 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) [2021-03-10 22:17:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 843 transitions. [2021-03-10 22:17:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:54,960 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:54,960 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:55,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:17:55,177 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:55,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:55,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1338392489, now seen corresponding path program 7 times [2021-03-10 22:17:55,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:55,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748590006] [2021-03-10 22:17:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:55,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748590006] [2021-03-10 22:17:55,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182525703] [2021-03-10 22:17:55,231 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 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 [2021-03-10 22:17:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:55,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 22:17:55,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:55,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:55,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-03-10 22:17:55,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146120363] [2021-03-10 22:17:55,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 22:17:55,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:55,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 22:17:55,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:55,345 INFO L87 Difference]: Start difference. First operand 277 states and 843 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:55,544 INFO L93 Difference]: Finished difference Result 557 states and 1551 transitions. [2021-03-10 22:17:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:55,544 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have 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 [2021-03-10 22:17:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:55,545 INFO L225 Difference]: With dead ends: 557 [2021-03-10 22:17:55,545 INFO L226 Difference]: Without dead ends: 517 [2021-03-10 22:17:55,546 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 192.6ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:17:55,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-03-10 22:17:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 284. [2021-03-10 22:17:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.060070671378092) internal successors, (866), 283 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 866 transitions. [2021-03-10 22:17:55,552 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 866 transitions. Word has length 18 [2021-03-10 22:17:55,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:55,552 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 866 transitions. [2021-03-10 22:17:55,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 866 transitions. [2021-03-10 22:17:55,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:55,553 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:55,553 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:55,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-03-10 22:17:55,767 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:55,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1254344866, now seen corresponding path program 2 times [2021-03-10 22:17:55,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:55,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409719466] [2021-03-10 22:17:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:55,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409719466] [2021-03-10 22:17:55,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995703016] [2021-03-10 22:17:55,809 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 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 [2021-03-10 22:17:55,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:17:55,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:55,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:17:55,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:55,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:55,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-03-10 22:17:55,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641266987] [2021-03-10 22:17:55,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:17:55,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:55,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:17:55,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:55,909 INFO L87 Difference]: Start difference. First operand 284 states and 866 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:56,040 INFO L93 Difference]: Finished difference Result 566 states and 1626 transitions. [2021-03-10 22:17:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:17:56,040 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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 [2021-03-10 22:17:56,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:56,041 INFO L225 Difference]: With dead ends: 566 [2021-03-10 22:17:56,041 INFO L226 Difference]: Without dead ends: 505 [2021-03-10 22:17:56,041 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-03-10 22:17:56,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 300. [2021-03-10 22:17:56,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.120401337792642) internal successors, (933), 299 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 933 transitions. [2021-03-10 22:17:56,047 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 933 transitions. Word has length 18 [2021-03-10 22:17:56,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:56,047 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 933 transitions. [2021-03-10 22:17:56,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,047 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 933 transitions. [2021-03-10 22:17:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:56,048 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:56,048 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:56,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2021-03-10 22:17:56,270 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:56,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:56,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2042464585, now seen corresponding path program 8 times [2021-03-10 22:17:56,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:56,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717233720] [2021-03-10 22:17:56,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:56,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717233720] [2021-03-10 22:17:56,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235261410] [2021-03-10 22:17:56,310 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 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 [2021-03-10 22:17:56,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:17:56,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:56,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:17:56,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:56,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:56,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-03-10 22:17:56,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938636233] [2021-03-10 22:17:56,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:56,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:56,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:56,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:56,407 INFO L87 Difference]: Start difference. First operand 300 states and 933 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:56,513 INFO L93 Difference]: Finished difference Result 439 states and 1262 transitions. [2021-03-10 22:17:56,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:17:56,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have 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 [2021-03-10 22:17:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:56,514 INFO L225 Difference]: With dead ends: 439 [2021-03-10 22:17:56,514 INFO L226 Difference]: Without dead ends: 381 [2021-03-10 22:17:56,514 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:56,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-03-10 22:17:56,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 296. [2021-03-10 22:17:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.0406779661016947) internal successors, (897), 295 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 897 transitions. [2021-03-10 22:17:56,519 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 897 transitions. Word has length 18 [2021-03-10 22:17:56,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:56,519 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 897 transitions. [2021-03-10 22:17:56,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,519 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 897 transitions. [2021-03-10 22:17:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:56,520 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:56,520 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:56,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:17:56,735 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:56,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1866597709, now seen corresponding path program 3 times [2021-03-10 22:17:56,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:56,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919761749] [2021-03-10 22:17:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:56,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919761749] [2021-03-10 22:17:56,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377743921] [2021-03-10 22:17:56,796 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 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 [2021-03-10 22:17:56,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 22:17:56,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:56,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:17:56,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:56,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:56,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2021-03-10 22:17:56,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800881680] [2021-03-10 22:17:56,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:17:56,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:56,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:17:56,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:56,906 INFO L87 Difference]: Start difference. First operand 296 states and 897 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2021-03-10 22:17:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:57,288 INFO L93 Difference]: Finished difference Result 627 states and 1772 transitions. [2021-03-10 22:17:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 22:17:57,288 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 18 [2021-03-10 22:17:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:57,289 INFO L225 Difference]: With dead ends: 627 [2021-03-10 22:17:57,289 INFO L226 Difference]: Without dead ends: 553 [2021-03-10 22:17:57,289 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 316.6ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-03-10 22:17:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-10 22:17:57,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 326. [2021-03-10 22:17:57,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.076923076923077) internal successors, (1000), 325 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 1000 transitions. [2021-03-10 22:17:57,294 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 1000 transitions. Word has length 18 [2021-03-10 22:17:57,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:57,294 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 1000 transitions. [2021-03-10 22:17:57,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2021-03-10 22:17:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 1000 transitions. [2021-03-10 22:17:57,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:57,294 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:57,294 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:57,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-03-10 22:17:57,495 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:57,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1213009967, now seen corresponding path program 4 times [2021-03-10 22:17:57,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:57,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473937523] [2021-03-10 22:17:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:57,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473937523] [2021-03-10 22:17:57,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48258619] [2021-03-10 22:17:57,550 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 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 [2021-03-10 22:17:57,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 22:17:57,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:57,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 22:17:57,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:57,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:57,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-03-10 22:17:57,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547950752] [2021-03-10 22:17:57,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 22:17:57,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:57,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 22:17:57,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:57,682 INFO L87 Difference]: Start difference. First operand 326 states and 1000 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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) [2021-03-10 22:17:57,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:57,845 INFO L93 Difference]: Finished difference Result 453 states and 1320 transitions. [2021-03-10 22:17:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:57,845 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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 18 [2021-03-10 22:17:57,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:57,845 INFO L225 Difference]: With dead ends: 453 [2021-03-10 22:17:57,845 INFO L226 Difference]: Without dead ends: 419 [2021-03-10 22:17:57,846 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 183.8ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:17:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-03-10 22:17:57,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 326. [2021-03-10 22:17:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.0707692307692307) internal successors, (998), 325 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 998 transitions. [2021-03-10 22:17:57,851 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 998 transitions. Word has length 18 [2021-03-10 22:17:57,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:57,851 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 998 transitions. [2021-03-10 22:17:57,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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) [2021-03-10 22:17:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 998 transitions. [2021-03-10 22:17:57,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:57,852 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:57,852 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:58,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:17:58,073 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:58,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:58,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1861527460, now seen corresponding path program 3 times [2021-03-10 22:17:58,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:58,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120747111] [2021-03-10 22:17:58,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:58,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120747111] [2021-03-10 22:17:58,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668478254] [2021-03-10 22:17:58,110 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:17:58,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 22:17:58,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:58,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 22:17:58,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:58,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:58,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-03-10 22:17:58,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520311167] [2021-03-10 22:17:58,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 22:17:58,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:58,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 22:17:58,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:58,237 INFO L87 Difference]: Start difference. First operand 326 states and 998 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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) [2021-03-10 22:17:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:58,371 INFO L93 Difference]: Finished difference Result 528 states and 1512 transitions. [2021-03-10 22:17:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:17:58,371 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 18 [2021-03-10 22:17:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:58,372 INFO L225 Difference]: With dead ends: 528 [2021-03-10 22:17:58,372 INFO L226 Difference]: Without dead ends: 440 [2021-03-10 22:17:58,372 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 152.0ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:17:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-03-10 22:17:58,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 320. [2021-03-10 22:17:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 3.0564263322884013) internal successors, (975), 319 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:58,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 975 transitions. [2021-03-10 22:17:58,376 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 975 transitions. Word has length 18 [2021-03-10 22:17:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:58,376 INFO L480 AbstractCegarLoop]: Abstraction has 320 states and 975 transitions. [2021-03-10 22:17:58,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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) [2021-03-10 22:17:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 975 transitions. [2021-03-10 22:17:58,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:58,376 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:58,376 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:58,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:17:58,577 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:58,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:58,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1726676173, now seen corresponding path program 5 times [2021-03-10 22:17:58,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:58,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341860234] [2021-03-10 22:17:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:58,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341860234] [2021-03-10 22:17:58,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599941290] [2021-03-10 22:17:58,622 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 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 [2021-03-10 22:17:58,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:17:58,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:58,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:17:58,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:58,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:58,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-03-10 22:17:58,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676781519] [2021-03-10 22:17:58,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:17:58,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:58,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:17:58,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:58,748 INFO L87 Difference]: Start difference. First operand 320 states and 975 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:58,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:58,827 INFO L93 Difference]: Finished difference Result 455 states and 1343 transitions. [2021-03-10 22:17:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:17:58,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have 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 [2021-03-10 22:17:58,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:58,828 INFO L225 Difference]: With dead ends: 455 [2021-03-10 22:17:58,828 INFO L226 Difference]: Without dead ends: 405 [2021-03-10 22:17:58,828 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 64.7ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:58,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-03-10 22:17:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 307. [2021-03-10 22:17:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 3.0326797385620914) internal successors, (928), 306 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) [2021-03-10 22:17:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 928 transitions. [2021-03-10 22:17:58,832 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 928 transitions. Word has length 18 [2021-03-10 22:17:58,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:58,832 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 928 transitions. [2021-03-10 22:17:58,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 928 transitions. [2021-03-10 22:17:58,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:58,832 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:58,832 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:59,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:17:59,033 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:59,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:59,033 INFO L82 PathProgramCache]: Analyzing trace with hash -253324305, now seen corresponding path program 9 times [2021-03-10 22:17:59,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:59,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470307286] [2021-03-10 22:17:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:59,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470307286] [2021-03-10 22:17:59,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784932631] [2021-03-10 22:17:59,086 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 [2021-03-10 22:17:59,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 22:17:59,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:59,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:17:59,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:59,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:59,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-03-10 22:17:59,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056969364] [2021-03-10 22:17:59,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 22:17:59,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:59,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 22:17:59,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:59,188 INFO L87 Difference]: Start difference. First operand 307 states and 928 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) [2021-03-10 22:17:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:59,577 INFO L93 Difference]: Finished difference Result 718 states and 2053 transitions. [2021-03-10 22:17:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:17:59,578 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 18 [2021-03-10 22:17:59,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:59,579 INFO L225 Difference]: With dead ends: 718 [2021-03-10 22:17:59,579 INFO L226 Difference]: Without dead ends: 592 [2021-03-10 22:17:59,579 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 275.8ms TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-03-10 22:17:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-10 22:17:59,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 310. [2021-03-10 22:17:59,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.0226537216828477) internal successors, (934), 309 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:59,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 934 transitions. [2021-03-10 22:17:59,583 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 934 transitions. Word has length 18 [2021-03-10 22:17:59,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:59,583 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 934 transitions. [2021-03-10 22:17:59,583 INFO L481 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) [2021-03-10 22:17:59,583 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 934 transitions. [2021-03-10 22:17:59,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:17:59,584 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:59,584 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:59,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:17:59,784 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:59,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:59,784 INFO L82 PathProgramCache]: Analyzing trace with hash -603750765, now seen corresponding path program 10 times [2021-03-10 22:17:59,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:59,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456910220] [2021-03-10 22:17:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:59,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456910220] [2021-03-10 22:17:59,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302217171] [2021-03-10 22:17:59,866 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 [2021-03-10 22:17:59,897 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 22:17:59,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:17:59,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 22:17:59,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:17:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:59,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:17:59,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-03-10 22:17:59,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995817697] [2021-03-10 22:17:59,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 22:17:59,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:59,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 22:17:59,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:17:59,996 INFO L87 Difference]: Start difference. First operand 310 states and 934 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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) [2021-03-10 22:18:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:00,195 INFO L93 Difference]: Finished difference Result 549 states and 1571 transitions. [2021-03-10 22:18:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:18:00,195 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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 18 [2021-03-10 22:18:00,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:00,196 INFO L225 Difference]: With dead ends: 549 [2021-03-10 22:18:00,196 INFO L226 Difference]: Without dead ends: 512 [2021-03-10 22:18:00,196 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 216.1ms TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:18:00,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-03-10 22:18:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 310. [2021-03-10 22:18:00,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.0194174757281553) internal successors, (933), 309 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 933 transitions. [2021-03-10 22:18:00,200 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 933 transitions. Word has length 18 [2021-03-10 22:18:00,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:00,201 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 933 transitions. [2021-03-10 22:18:00,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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) [2021-03-10 22:18:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 933 transitions. [2021-03-10 22:18:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:18:00,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:00,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:00,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2021-03-10 22:18:00,423 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:00,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:00,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1496627073, now seen corresponding path program 11 times [2021-03-10 22:18:00,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:00,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49342796] [2021-03-10 22:18:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:00,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49342796] [2021-03-10 22:18:00,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827667747] [2021-03-10 22:18:00,474 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) [2021-03-10 22:18:00,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:18:00,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:18:00,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 22:18:00,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:00,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:00,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-03-10 22:18:00,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168091131] [2021-03-10 22:18:00,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 22:18:00,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:00,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 22:18:00,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:18:00,608 INFO L87 Difference]: Start difference. First operand 310 states and 933 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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) [2021-03-10 22:18:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:00,771 INFO L93 Difference]: Finished difference Result 552 states and 1552 transitions. [2021-03-10 22:18:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:18:00,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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 18 [2021-03-10 22:18:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:00,772 INFO L225 Difference]: With dead ends: 552 [2021-03-10 22:18:00,772 INFO L226 Difference]: Without dead ends: 521 [2021-03-10 22:18:00,772 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:18:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-03-10 22:18:00,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 313. [2021-03-10 22:18:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 3.0288461538461537) internal successors, (945), 312 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 945 transitions. [2021-03-10 22:18:00,778 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 945 transitions. Word has length 18 [2021-03-10 22:18:00,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:00,778 INFO L480 AbstractCegarLoop]: Abstraction has 313 states and 945 transitions. [2021-03-10 22:18:00,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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) [2021-03-10 22:18:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 945 transitions. [2021-03-10 22:18:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:18:00,778 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:00,779 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:00,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:18:00,998 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:00,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:00,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1579704863, now seen corresponding path program 12 times [2021-03-10 22:18:00,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:00,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111774770] [2021-03-10 22:18:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:01,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111774770] [2021-03-10 22:18:01,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12995692] [2021-03-10 22:18:01,025 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 [2021-03-10 22:18:01,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 22:18:01,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:18:01,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:18:01,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:01,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:01,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-03-10 22:18:01,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784759027] [2021-03-10 22:18:01,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:18:01,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:01,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:18:01,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:01,118 INFO L87 Difference]: Start difference. First operand 313 states and 945 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:01,180 INFO L93 Difference]: Finished difference Result 451 states and 1311 transitions. [2021-03-10 22:18:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:18:01,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have 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 [2021-03-10 22:18:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:01,182 INFO L225 Difference]: With dead ends: 451 [2021-03-10 22:18:01,182 INFO L226 Difference]: Without dead ends: 402 [2021-03-10 22:18:01,182 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 54.9ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:18:01,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-03-10 22:18:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 275. [2021-03-10 22:18:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 2.9708029197080292) internal successors, (814), 274 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 814 transitions. [2021-03-10 22:18:01,186 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 814 transitions. Word has length 18 [2021-03-10 22:18:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:01,186 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 814 transitions. [2021-03-10 22:18:01,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 814 transitions. [2021-03-10 22:18:01,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:18:01,187 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:01,187 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:01,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2021-03-10 22:18:01,409 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:01,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:01,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1646468570, now seen corresponding path program 4 times [2021-03-10 22:18:01,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:01,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432063231] [2021-03-10 22:18:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:01,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432063231] [2021-03-10 22:18:01,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838038608] [2021-03-10 22:18:01,457 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 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 [2021-03-10 22:18:01,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 22:18:01,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:18:01,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:18:01,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:01,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:01,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-03-10 22:18:01,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087539250] [2021-03-10 22:18:01,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:01,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:01,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:01,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:01,559 INFO L87 Difference]: Start difference. First operand 275 states and 814 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:01,664 INFO L93 Difference]: Finished difference Result 382 states and 1100 transitions. [2021-03-10 22:18:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:18:01,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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 [2021-03-10 22:18:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:01,665 INFO L225 Difference]: With dead ends: 382 [2021-03-10 22:18:01,665 INFO L226 Difference]: Without dead ends: 321 [2021-03-10 22:18:01,665 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:01,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-03-10 22:18:01,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 285. [2021-03-10 22:18:01,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.943661971830986) internal successors, (836), 284 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 836 transitions. [2021-03-10 22:18:01,668 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 836 transitions. Word has length 18 [2021-03-10 22:18:01,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:01,668 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 836 transitions. [2021-03-10 22:18:01,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 836 transitions. [2021-03-10 22:18:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:18:01,669 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:01,669 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:01,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:18:01,869 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:01,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:01,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1039285976, now seen corresponding path program 5 times [2021-03-10 22:18:01,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:01,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859438519] [2021-03-10 22:18:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:01,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859438519] [2021-03-10 22:18:01,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322252969] [2021-03-10 22:18:01,910 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 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 [2021-03-10 22:18:01,951 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:18:01,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:18:01,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:18:01,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:02,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:02,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-03-10 22:18:02,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555085050] [2021-03-10 22:18:02,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:02,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:02,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:02,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:02,018 INFO L87 Difference]: Start difference. First operand 285 states and 836 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:02,102 INFO L93 Difference]: Finished difference Result 392 states and 1114 transitions. [2021-03-10 22:18:02,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:18:02,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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 [2021-03-10 22:18:02,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:02,103 INFO L225 Difference]: With dead ends: 392 [2021-03-10 22:18:02,103 INFO L226 Difference]: Without dead ends: 337 [2021-03-10 22:18:02,103 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-03-10 22:18:02,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 274. [2021-03-10 22:18:02,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.93040293040293) internal successors, (800), 273 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 800 transitions. [2021-03-10 22:18:02,107 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 800 transitions. Word has length 18 [2021-03-10 22:18:02,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:02,108 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 800 transitions. [2021-03-10 22:18:02,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,108 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 800 transitions. [2021-03-10 22:18:02,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:18:02,108 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:02,108 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:02,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:18:02,329 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:02,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:02,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1633409787, now seen corresponding path program 6 times [2021-03-10 22:18:02,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:02,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377350521] [2021-03-10 22:18:02,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:02,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377350521] [2021-03-10 22:18:02,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494019783] [2021-03-10 22:18:02,396 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 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 [2021-03-10 22:18:02,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 22:18:02,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:18:02,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:18:02,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:02,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:02,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-03-10 22:18:02,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762619359] [2021-03-10 22:18:02,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 22:18:02,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:02,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 22:18:02,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:18:02,516 INFO L87 Difference]: Start difference. First operand 274 states and 800 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-03-10 22:18:02,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:02,936 INFO L93 Difference]: Finished difference Result 519 states and 1396 transitions. [2021-03-10 22:18:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 22:18:02,936 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 18 [2021-03-10 22:18:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:02,937 INFO L225 Difference]: With dead ends: 519 [2021-03-10 22:18:02,937 INFO L226 Difference]: Without dead ends: 431 [2021-03-10 22:18:02,937 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 365.1ms TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:18:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-03-10 22:18:02,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 279. [2021-03-10 22:18:02,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 2.91726618705036) internal successors, (811), 278 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 811 transitions. [2021-03-10 22:18:02,941 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 811 transitions. Word has length 18 [2021-03-10 22:18:02,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:02,941 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 811 transitions. [2021-03-10 22:18:02,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-03-10 22:18:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 811 transitions. [2021-03-10 22:18:02,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:18:02,941 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:02,941 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:03,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2021-03-10 22:18:03,142 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:03,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:03,142 INFO L82 PathProgramCache]: Analyzing trace with hash -675858551, now seen corresponding path program 7 times [2021-03-10 22:18:03,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:03,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229661127] [2021-03-10 22:18:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:03,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229661127] [2021-03-10 22:18:03,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663390746] [2021-03-10 22:18:03,198 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 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 [2021-03-10 22:18:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:03,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 22:18:03,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:03,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:03,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-03-10 22:18:03,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585261960] [2021-03-10 22:18:03,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 22:18:03,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:03,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 22:18:03,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:18:03,314 INFO L87 Difference]: Start difference. First operand 279 states and 811 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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) [2021-03-10 22:18:03,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:03,525 INFO L93 Difference]: Finished difference Result 371 states and 1004 transitions. [2021-03-10 22:18:03,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:18:03,525 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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 18 [2021-03-10 22:18:03,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:03,525 INFO L225 Difference]: With dead ends: 371 [2021-03-10 22:18:03,525 INFO L226 Difference]: Without dead ends: 348 [2021-03-10 22:18:03,526 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 238.4ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:18:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-03-10 22:18:03,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 285. [2021-03-10 22:18:03,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.9014084507042255) internal successors, (824), 284 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 824 transitions. [2021-03-10 22:18:03,529 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 824 transitions. Word has length 18 [2021-03-10 22:18:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:03,529 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 824 transitions. [2021-03-10 22:18:03,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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) [2021-03-10 22:18:03,529 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 824 transitions. [2021-03-10 22:18:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:18:03,529 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:03,529 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:03,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:18:03,730 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:03,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:03,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1891218171, now seen corresponding path program 8 times [2021-03-10 22:18:03,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:03,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119887269] [2021-03-10 22:18:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:03,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119887269] [2021-03-10 22:18:03,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903159804] [2021-03-10 22:18:03,799 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-10 22:18:03,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:18:03,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:18:03,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:18:03,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:03,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:03,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-03-10 22:18:03,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826354133] [2021-03-10 22:18:03,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 22:18:03,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:03,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 22:18:03,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:18:03,923 INFO L87 Difference]: Start difference. First operand 285 states and 824 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-03-10 22:18:04,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:04,339 INFO L93 Difference]: Finished difference Result 545 states and 1462 transitions. [2021-03-10 22:18:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 22:18:04,340 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 18 [2021-03-10 22:18:04,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:04,340 INFO L225 Difference]: With dead ends: 545 [2021-03-10 22:18:04,340 INFO L226 Difference]: Without dead ends: 433 [2021-03-10 22:18:04,340 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 321.5ms TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-03-10 22:18:04,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-03-10 22:18:04,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 264. [2021-03-10 22:18:04,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 2.9277566539923954) internal successors, (770), 263 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 770 transitions. [2021-03-10 22:18:04,344 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 770 transitions. Word has length 18 [2021-03-10 22:18:04,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:04,344 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 770 transitions. [2021-03-10 22:18:04,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2021-03-10 22:18:04,344 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 770 transitions. [2021-03-10 22:18:04,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:18:04,344 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:04,344 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:04,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2021-03-10 22:18:04,545 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:04,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:04,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1770591994, now seen corresponding path program 6 times [2021-03-10 22:18:04,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:04,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721836010] [2021-03-10 22:18:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:04,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721836010] [2021-03-10 22:18:04,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063728250] [2021-03-10 22:18:04,577 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 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 [2021-03-10 22:18:04,623 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 22:18:04,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:18:04,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 22:18:04,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:04,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:04,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2021-03-10 22:18:04,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244311742] [2021-03-10 22:18:04,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:18:04,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:04,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:18:04,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:04,701 INFO L87 Difference]: Start difference. First operand 264 states and 770 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:04,834 INFO L93 Difference]: Finished difference Result 379 states and 1054 transitions. [2021-03-10 22:18:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:18:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have 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 [2021-03-10 22:18:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:04,835 INFO L225 Difference]: With dead ends: 379 [2021-03-10 22:18:04,835 INFO L226 Difference]: Without dead ends: 285 [2021-03-10 22:18:04,835 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 127.8ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-03-10 22:18:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-03-10 22:18:04,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 208. [2021-03-10 22:18:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9082125603864735) internal successors, (602), 207 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 602 transitions. [2021-03-10 22:18:04,837 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 602 transitions. Word has length 18 [2021-03-10 22:18:04,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:04,837 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 602 transitions. [2021-03-10 22:18:04,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 602 transitions. [2021-03-10 22:18:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-10 22:18:04,838 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:04,838 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:05,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2021-03-10 22:18:05,038 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:05,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:05,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1782534729, now seen corresponding path program 9 times [2021-03-10 22:18:05,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:05,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693945954] [2021-03-10 22:18:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:05,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693945954] [2021-03-10 22:18:05,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843994888] [2021-03-10 22:18:05,074 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 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 [2021-03-10 22:18:05,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 22:18:05,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:18:05,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 22:18:05,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:05,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:05,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-03-10 22:18:05,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212406236] [2021-03-10 22:18:05,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:05,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:05,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:05,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:05,163 INFO L87 Difference]: Start difference. First operand 208 states and 602 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:05,251 INFO L93 Difference]: Finished difference Result 262 states and 743 transitions. [2021-03-10 22:18:05,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:18:05,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have 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 [2021-03-10 22:18:05,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:05,252 INFO L225 Difference]: With dead ends: 262 [2021-03-10 22:18:05,252 INFO L226 Difference]: Without dead ends: 215 [2021-03-10 22:18:05,252 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-03-10 22:18:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 189. [2021-03-10 22:18:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9202127659574466) internal successors, (549), 188 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 549 transitions. [2021-03-10 22:18:05,255 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 549 transitions. Word has length 18 [2021-03-10 22:18:05,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:05,255 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 549 transitions. [2021-03-10 22:18:05,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 549 transitions. [2021-03-10 22:18:05,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:18:05,255 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:05,255 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:05,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2021-03-10 22:18:05,476 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:05,476 INFO L82 PathProgramCache]: Analyzing trace with hash 92049292, now seen corresponding path program 1 times [2021-03-10 22:18:05,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:05,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286490535] [2021-03-10 22:18:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:05,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286490535] [2021-03-10 22:18:05,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514287315] [2021-03-10 22:18:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order 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 [2021-03-10 22:18:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:05,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:18:05,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:07,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:07,085 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:07,086 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:07,601 WARN L205 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 130 [2021-03-10 22:18:07,602 INFO L628 ElimStorePlain]: treesize reduction 268, result has 64.1 percent of original size [2021-03-10 22:18:07,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:07,608 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:07,610 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:07,810 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-03-10 22:18:07,811 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:07,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:07,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:07,820 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:07,822 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:07,830 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:18:07,831 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:08,026 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-03-10 22:18:08,027 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:08,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:08,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:08,039 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:08,040 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:08,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:08,049 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:18:08,050 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:08,215 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-03-10 22:18:08,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:08,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:08,222 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:08,223 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:08,389 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-10 22:18:08,390 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:08,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:08,396 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:08,397 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:08,575 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-03-10 22:18:08,575 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:08,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:08,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:08,582 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:18:08,583 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:08,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:08,590 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:08,591 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:08,769 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-03-10 22:18:08,769 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:08,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:08,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:08,778 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:08,779 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:08,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:08,787 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:18:08,788 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:08,964 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-03-10 22:18:08,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:08,985 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-03-10 22:18:08,985 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 16 variables, input treesize:753, output treesize:328 [2021-03-10 22:18:09,237 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 100 [2021-03-10 22:18:09,509 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 85 [2021-03-10 22:18:10,000 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_25, array_6, v_prenex_29, v_prenex_27], 1=[array_0, v_prenex_24, v_prenex_28, v_prenex_26]} [2021-03-10 22:18:10,009 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 23 treesize of output 17 [2021-03-10 22:18:10,011 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 22:18:10,019 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 23 treesize of output 17 [2021-03-10 22:18:10,020 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:10,030 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 30 treesize of output 22 [2021-03-10 22:18:10,031 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:10,040 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 23 treesize of output 17 [2021-03-10 22:18:10,041 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:10,056 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 12 [2021-03-10 22:18:10,057 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:10,065 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 12 [2021-03-10 22:18:10,067 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:10,338 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2021-03-10 22:18:10,339 INFO L628 ElimStorePlain]: treesize reduction 838, result has 16.7 percent of original size [2021-03-10 22:18:10,345 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 7 treesize of output 5 [2021-03-10 22:18:10,346 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:10,431 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:10,437 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 7 treesize of output 5 [2021-03-10 22:18:10,438 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:10,516 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:10,520 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 7 treesize of output 5 [2021-03-10 22:18:10,521 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:10,597 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:10,597 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:18:10,597 INFO L518 ElimStorePlain]: Eliminatee v_prenex_24 vanished before elimination [2021-03-10 22:18:10,598 INFO L518 ElimStorePlain]: Eliminatee v_prenex_28 vanished before elimination [2021-03-10 22:18:10,598 INFO L518 ElimStorePlain]: Eliminatee v_prenex_26 vanished before elimination [2021-03-10 22:18:10,601 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 22:18:10,601 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:1125, output treesize:122 [2021-03-10 22:18:10,738 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-03-10 22:18:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:10,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:10,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:18:10,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228898250] [2021-03-10 22:18:10,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:18:10,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:10,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:18:10,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:10,845 INFO L87 Difference]: Start difference. First operand 189 states and 549 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:18:11,241 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2021-03-10 22:18:11,540 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 98 [2021-03-10 22:18:12,245 WARN L205 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 164 [2021-03-10 22:18:13,788 WARN L205 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 215 DAG size of output: 184 [2021-03-10 22:18:15,472 WARN L205 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 224 DAG size of output: 189 [2021-03-10 22:18:17,316 WARN L205 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 233 DAG size of output: 205 [2021-03-10 22:18:17,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:17,455 INFO L93 Difference]: Finished difference Result 420 states and 1167 transitions. [2021-03-10 22:18:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:18:17,455 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:18:17,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:17,456 INFO L225 Difference]: With dead ends: 420 [2021-03-10 22:18:17,456 INFO L226 Difference]: Without dead ends: 380 [2021-03-10 22:18:17,456 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 7453.5ms TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:18:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-03-10 22:18:17,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 209. [2021-03-10 22:18:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.894230769230769) internal successors, (602), 208 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 602 transitions. [2021-03-10 22:18:17,459 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 602 transitions. Word has length 20 [2021-03-10 22:18:17,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:17,459 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 602 transitions. [2021-03-10 22:18:17,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:18:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 602 transitions. [2021-03-10 22:18:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:18:17,459 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:17,459 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:17,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:18:17,663 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:17,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:17,663 INFO L82 PathProgramCache]: Analyzing trace with hash -304868362, now seen corresponding path program 2 times [2021-03-10 22:18:17,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:17,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061576097] [2021-03-10 22:18:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:17,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061576097] [2021-03-10 22:18:17,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813736079] [2021-03-10 22:18:17,875 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 [2021-03-10 22:18:17,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:18:17,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:18:17,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:18:17,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:19,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,045 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:19,046 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:19,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,055 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:18:19,056 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:19,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,066 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:19,067 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:19,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,077 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:18:19,078 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:19,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,086 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:18:19,088 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:19,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,096 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:18:19,097 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:19,587 WARN L205 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2021-03-10 22:18:19,587 INFO L628 ElimStorePlain]: treesize reduction 583, result has 43.8 percent of original size [2021-03-10 22:18:19,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,594 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:19,596 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:19,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,602 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:18:19,603 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:19,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,609 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:19,610 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:19,820 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-03-10 22:18:19,820 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:19,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,827 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:19,828 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:19,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,833 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:19,834 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:19,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:19,840 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:19,841 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:20,039 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-10 22:18:20,040 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:20,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:20,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:20,046 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:20,047 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:20,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:20,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:20,053 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:18:20,054 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:20,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:20,060 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:18:20,061 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:20,388 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2021-03-10 22:18:20,389 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-03-10 22:18:20,398 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-03-10 22:18:20,399 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:334 [2021-03-10 22:18:20,706 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 100 [2021-03-10 22:18:20,930 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-03-10 22:18:21,394 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_50, v_prenex_54, v_prenex_52, v_prenex_58, array_6, v_prenex_56, v_prenex_48], 1=[array_0, v_prenex_53, v_prenex_51, v_prenex_47, v_prenex_57, v_prenex_55, v_prenex_49]} [2021-03-10 22:18:21,410 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 29 treesize of output 21 [2021-03-10 22:18:21,412 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:21,425 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 22 treesize of output 16 [2021-03-10 22:18:21,427 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:21,440 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 15 treesize of output 11 [2021-03-10 22:18:21,442 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:21,454 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 22 treesize of output 16 [2021-03-10 22:18:21,455 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:21,465 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 15 treesize of output 11 [2021-03-10 22:18:21,467 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:21,481 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 22 treesize of output 16 [2021-03-10 22:18:21,482 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:22,071 WARN L205 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 106 [2021-03-10 22:18:22,071 INFO L628 ElimStorePlain]: treesize reduction 1619, result has 16.2 percent of original size [2021-03-10 22:18:22,077 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 7 treesize of output 5 [2021-03-10 22:18:22,079 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:22,223 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-03-10 22:18:22,224 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:22,229 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 7 treesize of output 5 [2021-03-10 22:18:22,231 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:22,387 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-03-10 22:18:22,388 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:22,393 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 7 treesize of output 5 [2021-03-10 22:18:22,394 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:22,534 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-03-10 22:18:22,534 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:22,539 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 7 treesize of output 5 [2021-03-10 22:18:22,541 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:22,545 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 12 [2021-03-10 22:18:22,546 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:22,777 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2021-03-10 22:18:22,778 INFO L628 ElimStorePlain]: treesize reduction 33, result has 87.7 percent of original size [2021-03-10 22:18:22,788 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 9 treesize of output 7 [2021-03-10 22:18:22,789 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:22,900 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-03-10 22:18:22,901 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:22,905 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 7 treesize of output 5 [2021-03-10 22:18:22,906 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:23,015 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-03-10 22:18:23,015 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:23,016 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:18:23,016 INFO L518 ElimStorePlain]: Eliminatee v_prenex_53 vanished before elimination [2021-03-10 22:18:23,016 INFO L518 ElimStorePlain]: Eliminatee v_prenex_51 vanished before elimination [2021-03-10 22:18:23,016 INFO L518 ElimStorePlain]: Eliminatee v_prenex_47 vanished before elimination [2021-03-10 22:18:23,016 INFO L518 ElimStorePlain]: Eliminatee v_prenex_57 vanished before elimination [2021-03-10 22:18:23,016 INFO L518 ElimStorePlain]: Eliminatee v_prenex_55 vanished before elimination [2021-03-10 22:18:23,016 INFO L518 ElimStorePlain]: Eliminatee v_prenex_49 vanished before elimination [2021-03-10 22:18:23,024 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:18:23,024 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 21 variables, input treesize:2043, output treesize:175 [2021-03-10 22:18:23,235 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-03-10 22:18:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:23,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:23,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:18:23,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114040607] [2021-03-10 22:18:23,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:18:23,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:23,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:18:23,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:23,485 INFO L87 Difference]: Start difference. First operand 209 states and 602 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:18:23,815 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2021-03-10 22:18:24,132 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2021-03-10 22:18:24,818 WARN L205 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 157 [2021-03-10 22:18:25,649 WARN L205 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 166 [2021-03-10 22:18:26,442 WARN L205 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 173 [2021-03-10 22:18:27,340 WARN L205 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 176 [2021-03-10 22:18:28,131 WARN L205 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 171 [2021-03-10 22:18:28,979 WARN L205 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 181 [2021-03-10 22:18:29,884 WARN L205 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 184 [2021-03-10 22:18:30,769 WARN L205 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 178 [2021-03-10 22:18:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:30,838 INFO L93 Difference]: Finished difference Result 500 states and 1358 transitions. [2021-03-10 22:18:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:18:30,838 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:18:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:30,839 INFO L225 Difference]: With dead ends: 500 [2021-03-10 22:18:30,839 INFO L226 Difference]: Without dead ends: 470 [2021-03-10 22:18:30,839 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 8026.1ms TimeCoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2021-03-10 22:18:30,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-03-10 22:18:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 215. [2021-03-10 22:18:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.9299065420560746) internal successors, (627), 214 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 627 transitions. [2021-03-10 22:18:30,842 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 627 transitions. Word has length 20 [2021-03-10 22:18:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:30,842 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 627 transitions. [2021-03-10 22:18:30,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:18:30,842 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 627 transitions. [2021-03-10 22:18:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:18:30,843 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:30,843 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:31,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:18:31,043 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:31,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:31,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2003588750, now seen corresponding path program 3 times [2021-03-10 22:18:31,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:31,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179564040] [2021-03-10 22:18:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:31,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179564040] [2021-03-10 22:18:31,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004673439] [2021-03-10 22:18:31,280 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 [2021-03-10 22:18:31,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 22:18:31,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:18:31,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:18:31,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:32,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,304 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:32,305 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:32,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,315 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:18:32,316 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:32,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,324 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:18:32,326 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:32,332 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:18:32,333 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:32,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,342 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:18:32,343 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:32,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,351 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:18:32,352 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:32,773 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2021-03-10 22:18:32,773 INFO L628 ElimStorePlain]: treesize reduction 526, result has 44.1 percent of original size [2021-03-10 22:18:32,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,780 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:18:32,781 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:32,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,787 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:32,788 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:32,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:32,793 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:32,794 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:33,109 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2021-03-10 22:18:33,109 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-03-10 22:18:33,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:33,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:33,115 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:18:33,116 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:33,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:33,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:33,121 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:33,123 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:33,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:33,127 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:33,138 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:33,289 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 22:18:33,289 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:33,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:33,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:33,295 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:18:33,296 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:33,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:33,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:33,302 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:33,303 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:33,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:33,307 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:33,308 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:33,469 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 22:18:33,469 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:33,477 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-03-10 22:18:33,477 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1129, output treesize:310 [2021-03-10 22:18:33,705 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 94 [2021-03-10 22:18:33,878 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-03-10 22:18:34,235 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_75, array_6, v_prenex_79, v_prenex_77], 1=[array_0, v_prenex_76, v_prenex_74, v_prenex_78]} [2021-03-10 22:18:34,246 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 15 treesize of output 11 [2021-03-10 22:18:34,248 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:34,258 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:18:34,259 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:34,269 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 29 treesize of output 21 [2021-03-10 22:18:34,270 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:34,279 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:18:34,280 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:34,289 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:18:34,290 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:34,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:18:34,300 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:34,699 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-03-10 22:18:34,699 INFO L628 ElimStorePlain]: treesize reduction 787, result has 24.0 percent of original size [2021-03-10 22:18:34,704 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 12 [2021-03-10 22:18:34,705 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:34,709 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:18:34,710 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:34,808 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:34,812 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 15 treesize of output 11 [2021-03-10 22:18:34,813 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:34,906 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:34,910 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 7 treesize of output 5 [2021-03-10 22:18:34,912 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:35,001 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:35,001 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:18:35,001 INFO L518 ElimStorePlain]: Eliminatee v_prenex_76 vanished before elimination [2021-03-10 22:18:35,002 INFO L518 ElimStorePlain]: Eliminatee v_prenex_74 vanished before elimination [2021-03-10 22:18:35,002 INFO L518 ElimStorePlain]: Eliminatee v_prenex_78 vanished before elimination [2021-03-10 22:18:35,004 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:18:35,004 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1241, output treesize:143 [2021-03-10 22:18:35,178 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-03-10 22:18:35,343 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-03-10 22:18:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:35,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:35,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:18:35,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80285427] [2021-03-10 22:18:35,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:18:35,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:35,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:18:35,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:35,427 INFO L87 Difference]: Start difference. First operand 215 states and 627 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:18:35,786 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2021-03-10 22:18:36,249 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2021-03-10 22:18:36,991 WARN L205 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 161 [2021-03-10 22:18:37,344 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2021-03-10 22:18:38,078 WARN L205 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 166 [2021-03-10 22:18:38,443 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 105 [2021-03-10 22:18:39,271 WARN L205 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 180 [2021-03-10 22:18:39,704 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2021-03-10 22:18:40,569 WARN L205 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 183 [2021-03-10 22:18:41,395 WARN L205 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2021-03-10 22:18:42,808 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 202 DAG size of output: 193 [2021-03-10 22:18:43,225 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 105 [2021-03-10 22:18:44,285 WARN L205 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 187 [2021-03-10 22:18:45,764 WARN L205 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 205 DAG size of output: 196 [2021-03-10 22:18:45,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:45,859 INFO L93 Difference]: Finished difference Result 621 states and 1642 transitions. [2021-03-10 22:18:45,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 22:18:45,859 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:18:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:45,860 INFO L225 Difference]: With dead ends: 621 [2021-03-10 22:18:45,860 INFO L226 Difference]: Without dead ends: 547 [2021-03-10 22:18:45,860 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 10850.0ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 22:18:45,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-10 22:18:45,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 244. [2021-03-10 22:18:45,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.9012345679012346) internal successors, (705), 243 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:45,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 705 transitions. [2021-03-10 22:18:45,864 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 705 transitions. Word has length 20 [2021-03-10 22:18:45,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:45,864 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 705 transitions. [2021-03-10 22:18:45,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:18:45,864 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 705 transitions. [2021-03-10 22:18:45,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:18:45,864 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:45,864 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:46,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable596,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:18:46,065 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:46,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:46,065 INFO L82 PathProgramCache]: Analyzing trace with hash -225291252, now seen corresponding path program 4 times [2021-03-10 22:18:46,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:46,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035335818] [2021-03-10 22:18:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:46,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035335818] [2021-03-10 22:18:46,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249557238] [2021-03-10 22:18:46,275 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 [2021-03-10 22:18:46,299 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 22:18:46,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:18:46,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:18:46,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:47,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:47,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:47,397 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:47,398 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:47,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:47,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:47,409 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:47,410 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:47,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:47,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:47,420 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:18:47,422 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:47,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:47,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:47,433 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:18:47,434 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:47,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:47,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:47,444 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:18:47,446 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:47,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:47,457 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:18:47,458 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:48,074 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2021-03-10 22:18:48,075 INFO L628 ElimStorePlain]: treesize reduction 609, result has 44.3 percent of original size [2021-03-10 22:18:48,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:48,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:48,082 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:48,083 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:48,089 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 12 [2021-03-10 22:18:48,090 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:48,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:48,096 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:18:48,097 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:48,561 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2021-03-10 22:18:48,562 INFO L628 ElimStorePlain]: treesize reduction 34, result has 92.4 percent of original size [2021-03-10 22:18:48,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:48,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:48,569 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:48,570 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:48,575 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 7 treesize of output 5 [2021-03-10 22:18:48,576 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:48,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:48,582 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:48,583 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:48,813 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 22:18:48,813 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:48,819 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 7 treesize of output 5 [2021-03-10 22:18:48,820 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:48,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:48,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:48,826 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:48,827 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:48,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:18:48,832 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:18:48,833 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:49,226 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-03-10 22:18:49,226 INFO L628 ElimStorePlain]: treesize reduction 27, result has 92.6 percent of original size [2021-03-10 22:18:49,237 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-03-10 22:18:49,238 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:314 [2021-03-10 22:18:49,528 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2021-03-10 22:18:49,904 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 80 [2021-03-10 22:18:50,187 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_97, v_prenex_95, array_6, v_prenex_101, v_prenex_99], 1=[v_prenex_94, array_3, v_prenex_98, v_prenex_96, v_prenex_100]} [2021-03-10 22:18:50,197 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 30 treesize of output 22 [2021-03-10 22:18:50,199 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:50,210 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 23 treesize of output 17 [2021-03-10 22:18:50,211 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:50,222 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 23 treesize of output 17 [2021-03-10 22:18:50,224 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:50,236 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 22 treesize of output 16 [2021-03-10 22:18:50,237 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:50,250 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 22 treesize of output 16 [2021-03-10 22:18:50,251 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:50,264 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 29 treesize of output 21 [2021-03-10 22:18:50,265 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:50,785 WARN L205 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 88 [2021-03-10 22:18:50,786 INFO L628 ElimStorePlain]: treesize reduction 1152, result has 21.0 percent of original size [2021-03-10 22:18:50,791 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 15 treesize of output 11 [2021-03-10 22:18:50,792 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:50,938 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-03-10 22:18:50,938 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:50,943 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 12 [2021-03-10 22:18:50,944 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:51,085 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 22:18:51,085 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:51,092 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 15 treesize of output 11 [2021-03-10 22:18:51,093 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:51,097 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 12 [2021-03-10 22:18:51,099 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:51,361 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2021-03-10 22:18:51,361 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-03-10 22:18:51,365 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 7 treesize of output 5 [2021-03-10 22:18:51,367 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:51,495 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 22:18:51,495 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:18:51,495 INFO L518 ElimStorePlain]: Eliminatee v_prenex_94 vanished before elimination [2021-03-10 22:18:51,495 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-03-10 22:18:51,495 INFO L518 ElimStorePlain]: Eliminatee v_prenex_98 vanished before elimination [2021-03-10 22:18:51,495 INFO L518 ElimStorePlain]: Eliminatee v_prenex_96 vanished before elimination [2021-03-10 22:18:51,495 INFO L518 ElimStorePlain]: Eliminatee v_prenex_100 vanished before elimination [2021-03-10 22:18:51,499 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 12 xjuncts. [2021-03-10 22:18:51,499 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 15 variables, input treesize:1621, output treesize:200 [2021-03-10 22:18:51,692 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-03-10 22:18:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:51,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:18:51,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:18:51,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884833079] [2021-03-10 22:18:51,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:18:51,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:51,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:18:51,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:51,797 INFO L87 Difference]: Start difference. First operand 244 states and 705 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:18:52,198 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2021-03-10 22:18:52,587 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2021-03-10 22:18:53,033 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2021-03-10 22:18:54,002 WARN L205 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 135 [2021-03-10 22:18:55,106 WARN L205 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 140 [2021-03-10 22:18:55,783 WARN L205 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 132 [2021-03-10 22:18:56,261 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2021-03-10 22:18:56,798 WARN L205 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2021-03-10 22:18:57,364 WARN L205 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2021-03-10 22:18:58,017 WARN L205 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2021-03-10 22:18:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:58,087 INFO L93 Difference]: Finished difference Result 445 states and 1252 transitions. [2021-03-10 22:18:58,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:18:58,088 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:18:58,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:58,089 INFO L225 Difference]: With dead ends: 445 [2021-03-10 22:18:58,089 INFO L226 Difference]: Without dead ends: 415 [2021-03-10 22:18:58,089 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 7052.7ms TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2021-03-10 22:18:58,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-03-10 22:18:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 256. [2021-03-10 22:18:58,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 2.8901960784313725) internal successors, (737), 255 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 737 transitions. [2021-03-10 22:18:58,092 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 737 transitions. Word has length 20 [2021-03-10 22:18:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:58,092 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 737 transitions. [2021-03-10 22:18:58,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:18:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 737 transitions. [2021-03-10 22:18:58,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:18:58,092 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:58,092 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:58,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable801,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:18:58,293 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:58,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:58,293 INFO L82 PathProgramCache]: Analyzing trace with hash 253993424, now seen corresponding path program 5 times [2021-03-10 22:18:58,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:58,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666837322] [2021-03-10 22:18:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:58,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666837322] [2021-03-10 22:18:58,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164490352] [2021-03-10 22:18:58,538 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 [2021-03-10 22:18:58,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:18:58,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:18:58,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:18:58,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:18:58,909 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 12 [2021-03-10 22:18:58,911 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,915 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 22 treesize of output 16 [2021-03-10 22:18:58,916 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,921 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 30 treesize of output 22 [2021-03-10 22:18:58,922 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,926 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 23 treesize of output 17 [2021-03-10 22:18:58,927 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,932 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 22 treesize of output 16 [2021-03-10 22:18:58,933 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,937 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 15 treesize of output 11 [2021-03-10 22:18:58,938 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,943 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 15 treesize of output 11 [2021-03-10 22:18:58,944 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,949 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 23 treesize of output 17 [2021-03-10 22:18:58,950 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,954 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 30 treesize of output 22 [2021-03-10 22:18:58,956 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,962 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 22 treesize of output 16 [2021-03-10 22:18:58,963 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,970 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 30 treesize of output 22 [2021-03-10 22:18:58,971 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,977 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 23 treesize of output 17 [2021-03-10 22:18:58,979 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,985 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 30 treesize of output 22 [2021-03-10 22:18:58,987 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:58,993 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 22 treesize of output 16 [2021-03-10 22:18:58,995 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:59,001 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:18:59,002 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:59,008 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 23 treesize of output 17 [2021-03-10 22:18:59,010 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:59,017 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 29 treesize of output 21 [2021-03-10 22:18:59,018 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:59,024 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 29 treesize of output 21 [2021-03-10 22:18:59,026 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:59,033 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 15 treesize of output 11 [2021-03-10 22:18:59,034 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:59,041 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 37 treesize of output 27 [2021-03-10 22:18:59,044 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:59,050 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 23 treesize of output 17 [2021-03-10 22:18:59,052 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 2 xjuncts. [2021-03-10 22:18:59,058 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 22 treesize of output 16 [2021-03-10 22:18:59,060 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:59,066 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 15 treesize of output 11 [2021-03-10 22:18:59,067 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:59,076 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 22 treesize of output 16 [2021-03-10 22:18:59,080 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-03-10 22:18:59,292 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2021-03-10 22:18:59,293 INFO L628 ElimStorePlain]: treesize reduction 291, result has 35.6 percent of original size [2021-03-10 22:18:59,294 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 22:18:59,295 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 1 variables, input treesize:919, output treesize:161 [2021-03-10 22:18:59,755 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-03-10 22:19:00,016 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-03-10 22:19:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:00,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:19:00,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-03-10 22:19:00,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31454926] [2021-03-10 22:19:00,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-03-10 22:19:00,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:00,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-03-10 22:19:00,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-03-10 22:19:00,160 INFO L87 Difference]: Start difference. First operand 256 states and 737 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-03-10 22:19:00,498 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-03-10 22:19:00,732 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-03-10 22:19:01,000 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2021-03-10 22:19:01,531 WARN L205 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2021-03-10 22:19:02,092 WARN L205 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-03-10 22:19:02,698 WARN L205 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2021-03-10 22:19:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:02,739 INFO L93 Difference]: Finished difference Result 445 states and 1246 transitions. [2021-03-10 22:19:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:19:02,740 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 20 [2021-03-10 22:19:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:02,740 INFO L225 Difference]: With dead ends: 445 [2021-03-10 22:19:02,740 INFO L226 Difference]: Without dead ends: 430 [2021-03-10 22:19:02,740 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3318.5ms TimeCoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2021-03-10 22:19:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-03-10 22:19:02,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 259. [2021-03-10 22:19:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 2.9108527131782944) internal successors, (751), 258 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 751 transitions. [2021-03-10 22:19:02,745 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 751 transitions. Word has length 20 [2021-03-10 22:19:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:02,745 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 751 transitions. [2021-03-10 22:19:02,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-03-10 22:19:02,745 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 751 transitions. [2021-03-10 22:19:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:19:02,746 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:02,746 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:02,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable972 [2021-03-10 22:19:02,967 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:19:02,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:02,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1444726964, now seen corresponding path program 6 times [2021-03-10 22:19:02,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:02,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316837897] [2021-03-10 22:19:02,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:03,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316837897] [2021-03-10 22:19:03,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376582347] [2021-03-10 22:19:03,219 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 [2021-03-10 22:19:03,246 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 22:19:03,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:19:03,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:19:03,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:19:03,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:03,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:03,950 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-03-10 22:19:03,952 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:03,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:03,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:03,958 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:19:03,960 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:03,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:03,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:03,966 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:19:03,967 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:03,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:03,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:03,975 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:19:03,976 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:03,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:03,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:03,983 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-03-10 22:19:03,984 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:03,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:03,990 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:19:03,991 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:04,309 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2021-03-10 22:19:04,309 INFO L628 ElimStorePlain]: treesize reduction 390, result has 41.7 percent of original size [2021-03-10 22:19:04,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:04,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:04,315 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:19:04,316 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:04,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:04,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:04,322 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:19:04,323 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:04,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:04,327 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:19:04,329 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:04,576 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2021-03-10 22:19:04,577 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-03-10 22:19:04,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:04,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:04,583 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:19:04,584 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:04,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:04,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:04,590 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:19:04,591 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:04,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:04,595 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:19:04,596 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:04,715 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 22:19:04,715 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:04,721 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-03-10 22:19:04,721 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:865, output treesize:211 [2021-03-10 22:19:05,767 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-03-10 22:19:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:05,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:19:05,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:19:05,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459605275] [2021-03-10 22:19:05,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:05,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:05,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:05,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:05,980 INFO L87 Difference]: Start difference. First operand 259 states and 751 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:19:06,318 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2021-03-10 22:19:06,630 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2021-03-10 22:19:07,013 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2021-03-10 22:19:07,713 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 143 [2021-03-10 22:19:08,073 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2021-03-10 22:19:08,541 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 103 [2021-03-10 22:19:08,830 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-03-10 22:19:09,359 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2021-03-10 22:19:09,864 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 105 [2021-03-10 22:19:10,313 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2021-03-10 22:19:10,630 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2021-03-10 22:19:11,416 WARN L205 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2021-03-10 22:19:11,919 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2021-03-10 22:19:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:11,983 INFO L93 Difference]: Finished difference Result 515 states and 1413 transitions. [2021-03-10 22:19:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 22:19:11,983 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:19:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:11,984 INFO L225 Difference]: With dead ends: 515 [2021-03-10 22:19:11,984 INFO L226 Difference]: Without dead ends: 456 [2021-03-10 22:19:11,984 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 6316.0ms TimeCoverageRelationStatistics Valid=211, Invalid=845, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 22:19:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-03-10 22:19:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 259. [2021-03-10 22:19:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 2.89922480620155) internal successors, (748), 258 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 748 transitions. [2021-03-10 22:19:11,988 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 748 transitions. Word has length 20 [2021-03-10 22:19:11,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:11,988 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 748 transitions. [2021-03-10 22:19:11,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:19:11,988 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 748 transitions. [2021-03-10 22:19:11,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:19:11,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:11,988 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:12,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1046 [2021-03-10 22:19:12,189 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:19:12,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:12,189 INFO L82 PathProgramCache]: Analyzing trace with hash 789223226, now seen corresponding path program 7 times [2021-03-10 22:19:12,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:12,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118601050] [2021-03-10 22:19:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:12,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:12,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118601050] [2021-03-10 22:19:12,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867128923] [2021-03-10 22:19:12,559 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 [2021-03-10 22:19:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:12,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:19:12,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:19:13,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:13,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:13,665 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:19:13,666 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:13,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:13,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:13,674 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:13,675 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:13,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:13,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:13,685 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:19:13,686 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:13,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:13,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:13,693 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:13,694 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:13,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:13,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:13,703 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:19:13,704 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:13,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:13,711 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:19:13,712 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:14,291 WARN L205 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2021-03-10 22:19:14,292 INFO L628 ElimStorePlain]: treesize reduction 585, result has 46.1 percent of original size [2021-03-10 22:19:14,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:14,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:14,299 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:19:14,301 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:14,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:14,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:14,307 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:19:14,309 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:14,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:14,314 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:14,316 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:14,778 WARN L205 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2021-03-10 22:19:14,778 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.8 percent of original size [2021-03-10 22:19:14,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:14,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:14,786 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:19:14,787 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:14,792 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:19:14,793 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:14,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:14,798 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:14,800 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:14,996 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 22:19:14,996 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:15,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:15,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:15,003 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:19:15,004 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:15,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:15,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:15,010 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:15,011 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:15,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:15,016 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:19:15,017 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:15,206 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 22:19:15,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:15,216 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-03-10 22:19:15,216 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:342 [2021-03-10 22:19:15,505 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2021-03-10 22:19:15,810 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_129, v_prenex_131, array_6, v_prenex_133], 1=[array_0, v_prenex_130, v_prenex_132, v_prenex_128]} [2021-03-10 22:19:15,820 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 22 treesize of output 16 [2021-03-10 22:19:15,821 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:15,831 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 29 treesize of output 21 [2021-03-10 22:19:15,832 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:15,839 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:19:15,840 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:15,847 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:19:15,847 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:15,854 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:19:15,855 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:15,862 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:19:15,863 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:16,247 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2021-03-10 22:19:16,247 INFO L628 ElimStorePlain]: treesize reduction 751, result has 24.9 percent of original size [2021-03-10 22:19:16,252 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 15 treesize of output 11 [2021-03-10 22:19:16,254 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:16,387 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 22:19:16,387 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:16,392 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 12 [2021-03-10 22:19:16,393 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:16,519 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 22:19:16,519 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:16,524 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 8 treesize of output 6 [2021-03-10 22:19:16,525 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:16,529 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 7 treesize of output 5 [2021-03-10 22:19:16,530 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:16,741 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-03-10 22:19:16,742 INFO L628 ElimStorePlain]: treesize reduction 30, result has 85.4 percent of original size [2021-03-10 22:19:16,742 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:19:16,742 INFO L518 ElimStorePlain]: Eliminatee v_prenex_130 vanished before elimination [2021-03-10 22:19:16,742 INFO L518 ElimStorePlain]: Eliminatee v_prenex_132 vanished before elimination [2021-03-10 22:19:16,742 INFO L518 ElimStorePlain]: Eliminatee v_prenex_128 vanished before elimination [2021-03-10 22:19:16,744 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:19:16,744 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1241, output treesize:143 [2021-03-10 22:19:16,947 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-03-10 22:19:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:17,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:19:17,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:19:17,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278930789] [2021-03-10 22:19:17,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:17,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:17,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:17,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:17,173 INFO L87 Difference]: Start difference. First operand 259 states and 748 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:19:17,587 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-03-10 22:19:18,029 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2021-03-10 22:19:18,663 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 93 [2021-03-10 22:19:19,923 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 174 DAG size of output: 159 [2021-03-10 22:19:20,612 WARN L205 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 120 [2021-03-10 22:19:21,412 WARN L205 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 133 [2021-03-10 22:19:22,124 WARN L205 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 129 [2021-03-10 22:19:22,938 WARN L205 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 142 [2021-03-10 22:19:23,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:23,038 INFO L93 Difference]: Finished difference Result 505 states and 1396 transitions. [2021-03-10 22:19:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 22:19:23,038 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:19:23,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:23,039 INFO L225 Difference]: With dead ends: 505 [2021-03-10 22:19:23,039 INFO L226 Difference]: Without dead ends: 475 [2021-03-10 22:19:23,039 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 6549.1ms TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2021-03-10 22:19:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-03-10 22:19:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 265. [2021-03-10 22:19:23,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 2.928030303030303) internal successors, (773), 264 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 773 transitions. [2021-03-10 22:19:23,043 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 773 transitions. Word has length 20 [2021-03-10 22:19:23,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:23,043 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 773 transitions. [2021-03-10 22:19:23,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:19:23,043 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 773 transitions. [2021-03-10 22:19:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:19:23,043 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:23,043 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:23,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1311 [2021-03-10 22:19:23,244 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:19:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:23,244 INFO L82 PathProgramCache]: Analyzing trace with hash -909497162, now seen corresponding path program 8 times [2021-03-10 22:19:23,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:23,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339001831] [2021-03-10 22:19:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:23,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339001831] [2021-03-10 22:19:23,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554482439] [2021-03-10 22:19:23,489 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 [2021-03-10 22:19:23,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:19:23,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:19:23,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 22:19:23,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:19:24,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:24,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:24,324 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:19:24,325 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:24,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:24,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:24,333 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:24,335 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:24,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:24,342 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:24,343 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:24,871 WARN L205 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2021-03-10 22:19:24,872 INFO L628 ElimStorePlain]: treesize reduction 181, result has 70.2 percent of original size [2021-03-10 22:19:24,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:24,879 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:19:24,880 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:25,127 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-03-10 22:19:25,128 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:25,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:25,134 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:25,136 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:25,383 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-03-10 22:19:25,384 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:25,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:25,390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:19:25,391 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:25,634 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-03-10 22:19:25,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:25,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:25,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:25,642 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-03-10 22:19:25,643 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:25,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:25,649 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:19:25,651 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:25,874 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-10 22:19:25,874 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:25,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:25,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:25,881 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:25,883 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:25,888 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:19:25,889 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:26,070 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-10 22:19:26,071 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:26,077 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-03-10 22:19:26,078 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:637, output treesize:281 [2021-03-10 22:19:26,418 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2021-03-10 22:19:26,676 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_170, v_prenex_160, v_prenex_150, v_prenex_162, v_prenex_152, v_prenex_164, v_prenex_154, v_prenex_166, array_6, v_prenex_156, v_prenex_158, v_prenex_148], 1=[array_0, v_prenex_161, v_prenex_151, v_prenex_163, v_prenex_153, v_prenex_165, v_prenex_155, v_prenex_167, v_prenex_157, v_prenex_147, v_prenex_159, v_prenex_149]} [2021-03-10 22:19:26,689 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 23 treesize of output 17 [2021-03-10 22:19:26,690 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:26,704 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 23 treesize of output 17 [2021-03-10 22:19:26,705 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:26,717 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 30 treesize of output 22 [2021-03-10 22:19:26,718 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:27,266 WARN L205 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 95 [2021-03-10 22:19:27,266 INFO L628 ElimStorePlain]: treesize reduction 1036, result has 23.0 percent of original size [2021-03-10 22:19:27,273 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 7 treesize of output 5 [2021-03-10 22:19:27,274 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:27,451 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-03-10 22:19:27,451 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:27,451 INFO L518 ElimStorePlain]: Eliminatee v_prenex_150 vanished before elimination [2021-03-10 22:19:27,457 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 7 treesize of output 5 [2021-03-10 22:19:27,459 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:27,639 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-10 22:19:27,639 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:27,645 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 7 treesize of output 5 [2021-03-10 22:19:27,646 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:27,821 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-03-10 22:19:27,821 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:27,827 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 9 treesize of output 7 [2021-03-10 22:19:27,828 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:27,998 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 22:19:27,998 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:27,999 INFO L518 ElimStorePlain]: Eliminatee v_prenex_154 vanished before elimination [2021-03-10 22:19:28,004 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 7 treesize of output 5 [2021-03-10 22:19:28,005 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:28,173 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 22:19:28,173 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:28,174 INFO L518 ElimStorePlain]: Eliminatee array_6 vanished before elimination [2021-03-10 22:19:28,174 INFO L518 ElimStorePlain]: Eliminatee v_prenex_156 vanished before elimination [2021-03-10 22:19:28,178 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 12 [2021-03-10 22:19:28,180 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:28,341 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 22:19:28,341 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_148 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_161 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_151 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_163 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_153 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_165 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_155 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_167 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_157 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_147 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_159 vanished before elimination [2021-03-10 22:19:28,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_149 vanished before elimination [2021-03-10 22:19:28,345 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 24 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-03-10 22:19:28,345 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 36 variables, input treesize:1375, output treesize:222 [2021-03-10 22:19:28,508 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 22:19:28,871 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-03-10 22:19:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:29,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:19:29,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:19:29,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937878181] [2021-03-10 22:19:29,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:29,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:29,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:29,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:29,012 INFO L87 Difference]: Start difference. First operand 265 states and 773 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:19:29,462 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2021-03-10 22:19:29,844 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2021-03-10 22:19:30,229 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2021-03-10 22:19:31,199 WARN L205 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 155 [2021-03-10 22:19:32,257 WARN L205 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 110 [2021-03-10 22:19:32,763 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2021-03-10 22:19:33,969 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 140 DAG size of output: 125 [2021-03-10 22:19:34,427 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2021-03-10 22:19:35,690 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 149 DAG size of output: 130 [2021-03-10 22:19:36,788 WARN L205 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 117 [2021-03-10 22:19:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:36,810 INFO L93 Difference]: Finished difference Result 507 states and 1385 transitions. [2021-03-10 22:19:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:19:36,811 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:19:36,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:36,811 INFO L225 Difference]: With dead ends: 507 [2021-03-10 22:19:36,811 INFO L226 Difference]: Without dead ends: 463 [2021-03-10 22:19:36,811 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 8556.0ms TimeCoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2021-03-10 22:19:36,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-03-10 22:19:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 262. [2021-03-10 22:19:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 2.9080459770114944) internal successors, (759), 261 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 759 transitions. [2021-03-10 22:19:36,815 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 759 transitions. Word has length 20 [2021-03-10 22:19:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:36,815 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 759 transitions. [2021-03-10 22:19:36,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:19:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 759 transitions. [2021-03-10 22:19:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:19:36,816 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:36,816 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:37,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1490,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:19:37,031 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:19:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:37,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1082744854, now seen corresponding path program 9 times [2021-03-10 22:19:37,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:37,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67540703] [2021-03-10 22:19:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:37,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67540703] [2021-03-10 22:19:37,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496157926] [2021-03-10 22:19:37,320 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 [2021-03-10 22:19:37,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 22:19:37,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:19:37,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 22:19:37,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:19:38,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,204 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:38,205 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:38,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,216 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:38,219 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:38,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,230 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:19:38,232 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:38,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,243 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:19:38,245 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:38,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,256 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:19:38,257 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:38,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,264 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:19:38,266 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:38,767 WARN L205 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-03-10 22:19:38,768 INFO L628 ElimStorePlain]: treesize reduction 457, result has 44.9 percent of original size [2021-03-10 22:19:38,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,774 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:19:38,776 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:38,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,783 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:19:38,784 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:38,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:38,791 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:19:38,792 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:39,013 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-03-10 22:19:39,014 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:39,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:39,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:39,025 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:19:39,027 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:39,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:39,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:39,033 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-03-10 22:19:39,035 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:39,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:39,040 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:19:39,042 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:39,428 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2021-03-10 22:19:39,428 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-03-10 22:19:39,435 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-03-10 22:19:39,435 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:1009, output treesize:272 [2021-03-10 22:19:39,637 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-10 22:19:40,115 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 95 [2021-03-10 22:19:40,547 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_193, v_prenex_195, v_prenex_197, array_6], 1=[v_prenex_192, array_0, v_prenex_194, v_prenex_196]} [2021-03-10 22:19:40,555 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 23 treesize of output 17 [2021-03-10 22:19:40,556 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:40,564 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 22 treesize of output 16 [2021-03-10 22:19:40,565 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:40,573 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 29 treesize of output 21 [2021-03-10 22:19:40,574 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:40,582 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 30 treesize of output 22 [2021-03-10 22:19:40,583 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:40,591 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 23 treesize of output 17 [2021-03-10 22:19:40,592 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:40,599 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:19:40,600 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:41,014 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 71 [2021-03-10 22:19:41,014 INFO L628 ElimStorePlain]: treesize reduction 975, result has 18.8 percent of original size [2021-03-10 22:19:41,020 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 7 treesize of output 5 [2021-03-10 22:19:41,022 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:41,149 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-03-10 22:19:41,149 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:41,154 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 7 treesize of output 5 [2021-03-10 22:19:41,155 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:41,280 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 22:19:41,281 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:41,285 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 7 treesize of output 5 [2021-03-10 22:19:41,286 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:41,408 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-10 22:19:41,408 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:41,408 INFO L518 ElimStorePlain]: Eliminatee v_prenex_192 vanished before elimination [2021-03-10 22:19:41,408 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:19:41,409 INFO L518 ElimStorePlain]: Eliminatee v_prenex_194 vanished before elimination [2021-03-10 22:19:41,409 INFO L518 ElimStorePlain]: Eliminatee v_prenex_196 vanished before elimination [2021-03-10 22:19:41,411 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-03-10 22:19:41,411 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:1353, output treesize:173 [2021-03-10 22:19:41,552 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 22:19:41,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:41,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:19:41,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:19:41,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624620338] [2021-03-10 22:19:41,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:41,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:41,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:41,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:41,731 INFO L87 Difference]: Start difference. First operand 262 states and 759 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:19:42,094 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-03-10 22:19:42,453 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2021-03-10 22:19:42,889 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 22:19:43,737 WARN L205 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 135 [2021-03-10 22:19:45,088 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 210 DAG size of output: 182 [2021-03-10 22:19:45,848 WARN L205 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2021-03-10 22:19:46,690 WARN L205 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 98 [2021-03-10 22:19:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:46,724 INFO L93 Difference]: Finished difference Result 419 states and 1189 transitions. [2021-03-10 22:19:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:19:46,725 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:19:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:46,725 INFO L225 Difference]: With dead ends: 419 [2021-03-10 22:19:46,725 INFO L226 Difference]: Without dead ends: 404 [2021-03-10 22:19:46,726 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 5779.8ms TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2021-03-10 22:19:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-03-10 22:19:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 262. [2021-03-10 22:19:46,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 2.9080459770114944) internal successors, (759), 261 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:46,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 759 transitions. [2021-03-10 22:19:46,729 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 759 transitions. Word has length 20 [2021-03-10 22:19:46,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:46,729 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 759 transitions. [2021-03-10 22:19:46,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:19:46,729 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 759 transitions. [2021-03-10 22:19:46,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:19:46,729 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:46,729 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:46,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1607,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:19:46,931 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:19:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:46,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1695383606, now seen corresponding path program 10 times [2021-03-10 22:19:46,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:46,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888022070] [2021-03-10 22:19:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:47,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888022070] [2021-03-10 22:19:47,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948355299] [2021-03-10 22:19:47,133 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 [2021-03-10 22:19:47,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 22:19:47,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:19:47,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:19:47,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:19:47,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:47,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:47,965 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:19:47,966 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:47,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:47,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:47,974 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:19:47,976 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:47,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:47,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:47,984 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-03-10 22:19:47,985 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:47,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:47,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:47,992 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-03-10 22:19:47,994 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:48,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,001 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:19:48,003 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:48,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,009 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:19:48,011 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:48,417 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2021-03-10 22:19:48,418 INFO L628 ElimStorePlain]: treesize reduction 357, result has 47.0 percent of original size [2021-03-10 22:19:48,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,425 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:19:48,426 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:48,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,432 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:19:48,434 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:48,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,439 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:19:48,440 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:48,618 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 22:19:48,619 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:48,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,625 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:19:48,626 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:48,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,633 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:19:48,635 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:48,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:19:48,640 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:19:48,641 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:48,925 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-03-10 22:19:48,926 INFO L628 ElimStorePlain]: treesize reduction 22, result has 91.3 percent of original size [2021-03-10 22:19:48,932 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-03-10 22:19:48,933 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:865, output treesize:218 [2021-03-10 22:19:49,088 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-03-10 22:19:49,439 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 83 [2021-03-10 22:19:49,929 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_217, v_prenex_219, v_prenex_221, array_6, v_prenex_223, v_prenex_225], 1=[v_prenex_218, array_3, v_prenex_220, v_prenex_222, v_prenex_224, v_prenex_216]} [2021-03-10 22:19:49,939 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 22 treesize of output 16 [2021-03-10 22:19:49,941 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:49,951 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 29 treesize of output 21 [2021-03-10 22:19:49,952 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:49,962 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 29 treesize of output 21 [2021-03-10 22:19:49,963 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:49,973 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 29 treesize of output 21 [2021-03-10 22:19:49,975 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:49,984 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:19:49,985 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:49,995 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 36 treesize of output 26 [2021-03-10 22:19:49,997 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:50,511 WARN L205 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 90 [2021-03-10 22:19:50,512 INFO L628 ElimStorePlain]: treesize reduction 1198, result has 15.5 percent of original size [2021-03-10 22:19:50,518 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 15 treesize of output 11 [2021-03-10 22:19:50,520 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:50,787 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2021-03-10 22:19:50,787 INFO L628 ElimStorePlain]: treesize reduction 7, result has 96.7 percent of original size [2021-03-10 22:19:50,794 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 7 treesize of output 5 [2021-03-10 22:19:50,795 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:50,927 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-03-10 22:19:50,927 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:50,935 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 7 treesize of output 5 [2021-03-10 22:19:50,938 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:51,068 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 22:19:51,069 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:51,074 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 12 [2021-03-10 22:19:51,076 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:51,198 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 22:19:51,198 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:51,204 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 7 treesize of output 5 [2021-03-10 22:19:51,206 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:51,210 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:19:51,212 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:19:51,311 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:19:51,311 INFO L518 ElimStorePlain]: Eliminatee v_prenex_218 vanished before elimination [2021-03-10 22:19:51,311 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-03-10 22:19:51,311 INFO L518 ElimStorePlain]: Eliminatee v_prenex_220 vanished before elimination [2021-03-10 22:19:51,311 INFO L518 ElimStorePlain]: Eliminatee v_prenex_222 vanished before elimination [2021-03-10 22:19:51,312 INFO L518 ElimStorePlain]: Eliminatee v_prenex_224 vanished before elimination [2021-03-10 22:19:51,312 INFO L518 ElimStorePlain]: Eliminatee v_prenex_216 vanished before elimination [2021-03-10 22:19:51,314 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 22:19:51,314 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1579, output treesize:107 [2021-03-10 22:19:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:51,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:19:51,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:19:51,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224827684] [2021-03-10 22:19:51,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:51,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:51,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:51,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:51,533 INFO L87 Difference]: Start difference. First operand 262 states and 759 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:19:51,963 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-03-10 22:19:52,366 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-03-10 22:19:53,226 WARN L205 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 128 [2021-03-10 22:19:54,639 WARN L205 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 191 DAG size of output: 134 [2021-03-10 22:19:55,761 WARN L205 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 139 [2021-03-10 22:19:57,440 WARN L205 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 206 DAG size of output: 147 [2021-03-10 22:19:59,299 WARN L205 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 212 DAG size of output: 153 [2021-03-10 22:19:59,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:59,362 INFO L93 Difference]: Finished difference Result 506 states and 1394 transitions. [2021-03-10 22:19:59,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:19:59,363 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:19:59,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:59,363 INFO L225 Difference]: With dead ends: 506 [2021-03-10 22:19:59,363 INFO L226 Difference]: Without dead ends: 452 [2021-03-10 22:19:59,363 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 8310.8ms TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2021-03-10 22:19:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-03-10 22:19:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 268. [2021-03-10 22:19:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 2.902621722846442) internal successors, (775), 267 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 775 transitions. [2021-03-10 22:19:59,367 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 775 transitions. Word has length 20 [2021-03-10 22:19:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:59,367 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 775 transitions. [2021-03-10 22:19:59,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:19:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 775 transitions. [2021-03-10 22:19:59,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:19:59,367 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:59,367 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:59,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1795 [2021-03-10 22:19:59,569 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:19:59,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:59,569 INFO L82 PathProgramCache]: Analyzing trace with hash 896343602, now seen corresponding path program 11 times [2021-03-10 22:19:59,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:59,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252229029] [2021-03-10 22:19:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:59,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252229029] [2021-03-10 22:19:59,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747062812] [2021-03-10 22:19:59,879 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 [2021-03-10 22:19:59,904 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:19:59,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:19:59,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 22:19:59,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:20:00,304 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 44 treesize of output 32 [2021-03-10 22:20:00,306 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,313 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 37 treesize of output 27 [2021-03-10 22:20:00,315 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,321 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 30 treesize of output 22 [2021-03-10 22:20:00,323 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,330 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 37 treesize of output 27 [2021-03-10 22:20:00,331 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,338 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 23 treesize of output 17 [2021-03-10 22:20:00,340 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,348 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 23 treesize of output 17 [2021-03-10 22:20:00,350 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,358 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:20:00,360 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,370 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 30 treesize of output 22 [2021-03-10 22:20:00,372 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,382 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 30 treesize of output 22 [2021-03-10 22:20:00,383 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,390 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 22 treesize of output 16 [2021-03-10 22:20:00,392 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,398 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 38 treesize of output 28 [2021-03-10 22:20:00,400 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,407 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 38 treesize of output 28 [2021-03-10 22:20:00,410 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,420 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 29 treesize of output 21 [2021-03-10 22:20:00,421 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,429 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 31 treesize of output 23 [2021-03-10 22:20:00,432 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,439 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 38 treesize of output 28 [2021-03-10 22:20:00,441 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,447 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:20:00,449 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,456 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 45 treesize of output 33 [2021-03-10 22:20:00,490 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,499 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 30 treesize of output 22 [2021-03-10 22:20:00,500 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,507 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 23 treesize of output 17 [2021-03-10 22:20:00,509 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,515 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 38 treesize of output 28 [2021-03-10 22:20:00,517 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,523 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 22 treesize of output 16 [2021-03-10 22:20:00,524 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,531 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 44 treesize of output 32 [2021-03-10 22:20:00,533 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,540 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 29 treesize of output 21 [2021-03-10 22:20:00,541 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,548 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 29 treesize of output 21 [2021-03-10 22:20:00,550 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,558 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 30 treesize of output 22 [2021-03-10 22:20:00,560 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,568 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 31 treesize of output 23 [2021-03-10 22:20:00,570 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,577 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 37 treesize of output 27 [2021-03-10 22:20:00,578 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,585 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 38 treesize of output 28 [2021-03-10 22:20:00,587 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,593 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 38 treesize of output 28 [2021-03-10 22:20:00,595 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,602 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 37 treesize of output 27 [2021-03-10 22:20:00,603 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,612 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 31 treesize of output 23 [2021-03-10 22:20:00,614 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,622 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 37 treesize of output 27 [2021-03-10 22:20:00,623 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,630 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 37 treesize of output 27 [2021-03-10 22:20:00,632 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,638 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 31 treesize of output 23 [2021-03-10 22:20:00,640 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,647 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 36 treesize of output 26 [2021-03-10 22:20:00,648 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,654 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:20:00,656 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,662 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 45 treesize of output 33 [2021-03-10 22:20:00,664 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,670 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:20:00,672 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,678 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 29 treesize of output 21 [2021-03-10 22:20:00,680 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,686 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 38 treesize of output 28 [2021-03-10 22:20:00,688 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,695 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 37 treesize of output 27 [2021-03-10 22:20:00,696 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,703 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 29 treesize of output 21 [2021-03-10 22:20:00,704 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,711 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 37 treesize of output 27 [2021-03-10 22:20:00,712 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,719 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 29 treesize of output 21 [2021-03-10 22:20:00,720 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:20:00,727 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,733 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 23 treesize of output 17 [2021-03-10 22:20:00,735 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,742 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 37 treesize of output 27 [2021-03-10 22:20:00,743 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,750 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 37 treesize of output 27 [2021-03-10 22:20:00,751 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,758 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 22 treesize of output 16 [2021-03-10 22:20:00,759 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,767 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 38 treesize of output 28 [2021-03-10 22:20:00,769 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,775 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 38 treesize of output 28 [2021-03-10 22:20:00,777 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,784 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 44 treesize of output 32 [2021-03-10 22:20:00,785 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,792 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 37 treesize of output 27 [2021-03-10 22:20:00,794 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,800 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 30 treesize of output 22 [2021-03-10 22:20:00,802 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,811 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 22 treesize of output 16 [2021-03-10 22:20:00,813 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,819 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 30 treesize of output 22 [2021-03-10 22:20:00,821 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,827 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 30 treesize of output 22 [2021-03-10 22:20:00,829 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,836 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 30 treesize of output 22 [2021-03-10 22:20:00,837 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,857 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 30 treesize of output 22 [2021-03-10 22:20:00,859 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,865 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 38 treesize of output 28 [2021-03-10 22:20:00,867 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,874 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 36 treesize of output 26 [2021-03-10 22:20:00,875 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,882 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 30 treesize of output 22 [2021-03-10 22:20:00,883 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,889 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:20:00,890 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,896 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 45 treesize of output 33 [2021-03-10 22:20:00,898 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,905 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 37 treesize of output 27 [2021-03-10 22:20:00,907 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:00,913 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 30 treesize of output 22 [2021-03-10 22:20:00,914 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:01,224 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2021-03-10 22:20:01,224 INFO L628 ElimStorePlain]: treesize reduction 707, result has 20.4 percent of original size [2021-03-10 22:20:01,226 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:20:01,226 INFO L247 ElimStorePlain]: Needed 67 recursive calls to eliminate 1 variables, input treesize:3007, output treesize:181 [2021-03-10 22:20:01,361 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 22:20:01,515 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-03-10 22:20:01,758 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-03-10 22:20:02,048 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-03-10 22:20:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:02,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:20:02,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-03-10 22:20:02,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727797838] [2021-03-10 22:20:02,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-03-10 22:20:02,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:02,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-03-10 22:20:02,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-03-10 22:20:02,198 INFO L87 Difference]: Start difference. First operand 268 states and 775 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-03-10 22:20:02,641 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2021-03-10 22:20:03,074 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2021-03-10 22:20:03,980 WARN L205 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2021-03-10 22:20:04,468 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-03-10 22:20:05,381 WARN L205 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2021-03-10 22:20:05,961 WARN L205 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2021-03-10 22:20:07,115 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 115 DAG size of output: 90 [2021-03-10 22:20:08,093 WARN L205 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 85 [2021-03-10 22:20:08,641 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-03-10 22:20:10,039 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 125 DAG size of output: 104 [2021-03-10 22:20:11,171 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2021-03-10 22:20:11,786 WARN L205 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2021-03-10 22:20:13,371 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 135 DAG size of output: 114 [2021-03-10 22:20:13,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:13,439 INFO L93 Difference]: Finished difference Result 583 states and 1614 transitions. [2021-03-10 22:20:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 22:20:13,440 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 20 [2021-03-10 22:20:13,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:13,441 INFO L225 Difference]: With dead ends: 583 [2021-03-10 22:20:13,441 INFO L226 Difference]: Without dead ends: 553 [2021-03-10 22:20:13,441 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 12000.0ms TimeCoverageRelationStatistics Valid=221, Invalid=901, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 22:20:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-10 22:20:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 280. [2021-03-10 22:20:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.903225806451613) internal successors, (810), 279 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 810 transitions. [2021-03-10 22:20:13,445 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 810 transitions. Word has length 20 [2021-03-10 22:20:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:13,445 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 810 transitions. [2021-03-10 22:20:13,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-03-10 22:20:13,446 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 810 transitions. [2021-03-10 22:20:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:20:13,446 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:13,446 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:13,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1964,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:20:13,647 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:13,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:13,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1375628278, now seen corresponding path program 12 times [2021-03-10 22:20:13,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:13,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786023519] [2021-03-10 22:20:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:13,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786023519] [2021-03-10 22:20:13,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960713444] [2021-03-10 22:20:13,964 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 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 [2021-03-10 22:20:13,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 22:20:13,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:20:13,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:20:13,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:20:14,434 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 55 [2021-03-10 22:20:15,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,331 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:15,333 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:15,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,346 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:15,348 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:15,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,357 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:20:15,358 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:15,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,368 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:20:15,369 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:15,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:20:15,379 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:15,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,387 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:20:15,388 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:15,920 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2021-03-10 22:20:15,920 INFO L628 ElimStorePlain]: treesize reduction 526, result has 41.7 percent of original size [2021-03-10 22:20:15,928 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 7 treesize of output 5 [2021-03-10 22:20:15,930 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:15,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,938 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:15,940 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:15,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:15,947 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:15,948 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:16,165 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-03-10 22:20:16,165 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:16,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:16,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:16,173 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:20:16,175 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:16,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:16,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:16,182 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:20:16,184 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:16,189 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:20:16,191 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:16,375 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 22:20:16,376 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:16,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:16,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:16,385 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:20:16,387 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:16,394 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 7 treesize of output 5 [2021-03-10 22:20:16,396 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:16,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:16,404 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:16,406 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:16,587 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-03-10 22:20:16,588 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:16,596 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-03-10 22:20:16,596 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1009, output treesize:228 [2021-03-10 22:20:16,875 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-03-10 22:20:17,119 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-10 22:20:17,333 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_251, v_prenex_241, array_6, v_prenex_243, v_prenex_255, v_prenex_249], 1=[array_3, v_prenex_250, v_prenex_240, v_prenex_252, v_prenex_242, v_prenex_248]} [2021-03-10 22:20:17,342 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 15 treesize of output 11 [2021-03-10 22:20:17,343 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:17,743 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 65 [2021-03-10 22:20:17,743 INFO L628 ElimStorePlain]: treesize reduction 569, result has 26.5 percent of original size [2021-03-10 22:20:17,743 INFO L518 ElimStorePlain]: Eliminatee v_prenex_241 vanished before elimination [2021-03-10 22:20:17,748 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 7 treesize of output 5 [2021-03-10 22:20:17,750 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:17,886 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-03-10 22:20:17,886 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:17,886 INFO L518 ElimStorePlain]: Eliminatee v_prenex_243 vanished before elimination [2021-03-10 22:20:17,891 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 7 treesize of output 5 [2021-03-10 22:20:17,893 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:18,025 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 22:20:18,026 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:18,030 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 7 treesize of output 5 [2021-03-10 22:20:18,032 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:18,162 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 22:20:18,162 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:18,162 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-03-10 22:20:18,162 INFO L518 ElimStorePlain]: Eliminatee v_prenex_250 vanished before elimination [2021-03-10 22:20:18,162 INFO L518 ElimStorePlain]: Eliminatee v_prenex_240 vanished before elimination [2021-03-10 22:20:18,163 INFO L518 ElimStorePlain]: Eliminatee v_prenex_252 vanished before elimination [2021-03-10 22:20:18,163 INFO L518 ElimStorePlain]: Eliminatee v_prenex_242 vanished before elimination [2021-03-10 22:20:18,163 INFO L518 ElimStorePlain]: Eliminatee v_prenex_248 vanished before elimination [2021-03-10 22:20:18,165 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-03-10 22:20:18,165 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 18 variables, input treesize:781, output treesize:160 [2021-03-10 22:20:18,414 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-03-10 22:20:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:18,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:20:18,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:20:18,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956716429] [2021-03-10 22:20:18,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:18,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:18,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:18,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:18,680 INFO L87 Difference]: Start difference. First operand 280 states and 810 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:20:19,166 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2021-03-10 22:20:19,700 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2021-03-10 22:20:20,494 WARN L205 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 121 [2021-03-10 22:20:21,355 WARN L205 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 127 [2021-03-10 22:20:22,175 WARN L205 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 128 [2021-03-10 22:20:23,135 WARN L205 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 131 [2021-03-10 22:20:24,330 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 163 DAG size of output: 143 [2021-03-10 22:20:25,338 WARN L205 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 144 [2021-03-10 22:20:26,488 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 169 DAG size of output: 146 [2021-03-10 22:20:27,742 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 170 DAG size of output: 150 [2021-03-10 22:20:28,907 WARN L205 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 151 [2021-03-10 22:20:30,279 WARN L205 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 178 DAG size of output: 154 [2021-03-10 22:20:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:30,444 INFO L93 Difference]: Finished difference Result 636 states and 1714 transitions. [2021-03-10 22:20:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 22:20:30,446 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:20:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:30,446 INFO L225 Difference]: With dead ends: 636 [2021-03-10 22:20:30,446 INFO L226 Difference]: Without dead ends: 606 [2021-03-10 22:20:30,447 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 12202.8ms TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-03-10 22:20:30,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-10 22:20:30,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 283. [2021-03-10 22:20:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 2.921985815602837) internal successors, (824), 282 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 824 transitions. [2021-03-10 22:20:30,451 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 824 transitions. Word has length 20 [2021-03-10 22:20:30,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:30,451 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 824 transitions. [2021-03-10 22:20:30,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:20:30,451 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 824 transitions. [2021-03-10 22:20:30,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:20:30,452 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:30,452 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:30,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2020,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:20:30,655 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:30,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:30,655 INFO L82 PathProgramCache]: Analyzing trace with hash -323092110, now seen corresponding path program 13 times [2021-03-10 22:20:30,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:30,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379557121] [2021-03-10 22:20:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:31,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379557121] [2021-03-10 22:20:31,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497011651] [2021-03-10 22:20:31,136 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 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 [2021-03-10 22:20:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:31,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:20:31,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:20:32,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:32,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:32,421 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:20:32,423 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:32,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:32,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:32,433 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:32,435 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:32,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:32,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:32,445 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:20:32,446 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:32,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:32,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:32,456 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:32,458 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:32,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:32,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:32,467 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:20:32,469 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:32,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:32,476 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:20:32,478 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:33,071 WARN L205 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2021-03-10 22:20:33,072 INFO L628 ElimStorePlain]: treesize reduction 540, result has 40.1 percent of original size [2021-03-10 22:20:33,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:33,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:33,083 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:33,084 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:33,090 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 7 treesize of output 5 [2021-03-10 22:20:33,092 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:33,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:33,099 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:33,100 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:33,336 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 22:20:33,337 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:33,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:33,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:33,345 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:20:33,347 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:33,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:33,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:33,354 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:20:33,356 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:33,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:20:33,362 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:33,565 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 22:20:33,566 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:33,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:33,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:33,574 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:33,575 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:33,581 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 7 treesize of output 5 [2021-03-10 22:20:33,583 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:33,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:33,589 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:33,591 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:33,781 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-03-10 22:20:33,782 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:33,791 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-03-10 22:20:33,791 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1009, output treesize:229 [2021-03-10 22:20:34,088 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-03-10 22:20:34,333 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-03-10 22:20:34,590 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_280, v_prenex_270, v_prenex_285, v_prenex_274, array_6, v_prenex_278], 1=[v_prenex_281, array_3, v_prenex_273, v_prenex_277, v_prenex_279, v_prenex_269]} [2021-03-10 22:20:34,600 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 30 treesize of output 22 [2021-03-10 22:20:34,602 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:34,614 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 23 treesize of output 17 [2021-03-10 22:20:34,617 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:34,628 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 23 treesize of output 17 [2021-03-10 22:20:34,630 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:35,113 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 76 [2021-03-10 22:20:35,114 INFO L628 ElimStorePlain]: treesize reduction 484, result has 33.1 percent of original size [2021-03-10 22:20:35,120 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 7 treesize of output 5 [2021-03-10 22:20:35,121 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:35,303 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-03-10 22:20:35,303 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:35,309 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 7 treesize of output 5 [2021-03-10 22:20:35,310 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:35,488 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-03-10 22:20:35,488 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:35,494 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 7 treesize of output 5 [2021-03-10 22:20:35,496 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:35,670 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 22:20:35,671 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:35,677 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 7 treesize of output 5 [2021-03-10 22:20:35,678 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:35,851 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-10 22:20:35,852 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:35,852 INFO L518 ElimStorePlain]: Eliminatee v_prenex_278 vanished before elimination [2021-03-10 22:20:35,852 INFO L518 ElimStorePlain]: Eliminatee v_prenex_281 vanished before elimination [2021-03-10 22:20:35,852 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-03-10 22:20:35,852 INFO L518 ElimStorePlain]: Eliminatee v_prenex_273 vanished before elimination [2021-03-10 22:20:35,852 INFO L518 ElimStorePlain]: Eliminatee v_prenex_277 vanished before elimination [2021-03-10 22:20:35,852 INFO L518 ElimStorePlain]: Eliminatee v_prenex_279 vanished before elimination [2021-03-10 22:20:35,852 INFO L518 ElimStorePlain]: Eliminatee v_prenex_269 vanished before elimination [2021-03-10 22:20:35,855 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-03-10 22:20:35,855 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 18 variables, input treesize:753, output treesize:180 [2021-03-10 22:20:36,148 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-03-10 22:20:36,383 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-03-10 22:20:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:36,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:20:36,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:20:36,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822966740] [2021-03-10 22:20:36,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:36,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:36,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:36,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:36,524 INFO L87 Difference]: Start difference. First operand 283 states and 824 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:20:36,721 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-03-10 22:20:37,261 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2021-03-10 22:20:37,977 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-03-10 22:20:39,363 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2021-03-10 22:20:41,250 WARN L205 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 154 DAG size of output: 137 [2021-03-10 22:20:43,563 WARN L205 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 161 DAG size of output: 150 [2021-03-10 22:20:46,221 WARN L205 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 176 DAG size of output: 164 [2021-03-10 22:20:46,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:46,347 INFO L93 Difference]: Finished difference Result 495 states and 1387 transitions. [2021-03-10 22:20:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:20:46,348 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:20:46,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:46,349 INFO L225 Difference]: With dead ends: 495 [2021-03-10 22:20:46,349 INFO L226 Difference]: Without dead ends: 473 [2021-03-10 22:20:46,349 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 10751.5ms TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:20:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-03-10 22:20:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 277. [2021-03-10 22:20:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 2.8949275362318843) internal successors, (799), 276 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 799 transitions. [2021-03-10 22:20:46,352 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 799 transitions. Word has length 20 [2021-03-10 22:20:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:46,352 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 799 transitions. [2021-03-10 22:20:46,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:20:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 799 transitions. [2021-03-10 22:20:46,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:20:46,353 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:46,353 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:46,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2213,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:20:46,554 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:46,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:46,554 INFO L82 PathProgramCache]: Analyzing trace with hash 814944546, now seen corresponding path program 14 times [2021-03-10 22:20:46,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:46,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715983045] [2021-03-10 22:20:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:47,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715983045] [2021-03-10 22:20:47,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906915955] [2021-03-10 22:20:47,171 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 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 [2021-03-10 22:20:47,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:20:47,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:20:47,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:20:47,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:20:47,726 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 59 [2021-03-10 22:20:48,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:48,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:48,873 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:20:48,875 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:48,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:48,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:48,886 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:20:48,887 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:48,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:48,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:48,898 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:48,900 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:48,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:48,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:48,912 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:20:48,914 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:48,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:48,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:48,925 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:20:48,926 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:48,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:48,936 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:48,938 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:49,876 WARN L205 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2021-03-10 22:20:49,877 INFO L628 ElimStorePlain]: treesize reduction 602, result has 44.9 percent of original size [2021-03-10 22:20:49,885 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 12 [2021-03-10 22:20:49,887 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:49,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:49,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:49,897 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:20:49,900 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:49,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:49,907 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:20:49,909 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:50,642 WARN L205 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2021-03-10 22:20:50,643 INFO L628 ElimStorePlain]: treesize reduction 27, result has 94.0 percent of original size [2021-03-10 22:20:50,650 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 7 treesize of output 5 [2021-03-10 22:20:50,652 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:50,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:50,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:50,661 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:20:50,663 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:50,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:50,671 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:50,673 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:51,020 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 22:20:51,020 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:51,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:51,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:51,029 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:51,031 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:51,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:51,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:20:51,040 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:20:51,042 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:51,049 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 7 treesize of output 5 [2021-03-10 22:20:51,051 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:51,693 WARN L205 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-03-10 22:20:51,694 INFO L628 ElimStorePlain]: treesize reduction 34, result has 91.0 percent of original size [2021-03-10 22:20:51,704 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-03-10 22:20:51,705 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:321 [2021-03-10 22:20:52,227 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2021-03-10 22:20:52,724 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2021-03-10 22:20:53,149 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_305, v_prenex_307, v_prenex_309, array_6, v_prenex_303], 1=[v_prenex_306, v_prenex_308, array_3, v_prenex_302, v_prenex_304]} [2021-03-10 22:20:53,164 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 22 treesize of output 16 [2021-03-10 22:20:53,166 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:53,179 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 22 treesize of output 16 [2021-03-10 22:20:53,181 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:53,191 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 23 treesize of output 17 [2021-03-10 22:20:53,193 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:53,203 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 23 treesize of output 17 [2021-03-10 22:20:53,205 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:53,217 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 29 treesize of output 21 [2021-03-10 22:20:53,219 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:53,230 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 30 treesize of output 22 [2021-03-10 22:20:53,232 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:53,983 WARN L205 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 82 [2021-03-10 22:20:53,984 INFO L628 ElimStorePlain]: treesize reduction 1213, result has 18.5 percent of original size [2021-03-10 22:20:53,990 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 7 treesize of output 5 [2021-03-10 22:20:53,992 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:54,223 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-03-10 22:20:54,224 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:54,230 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 7 treesize of output 5 [2021-03-10 22:20:54,232 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:54,465 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 22:20:54,466 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:54,472 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 7 treesize of output 5 [2021-03-10 22:20:54,475 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:54,695 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 22:20:54,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:54,702 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 15 treesize of output 11 [2021-03-10 22:20:54,704 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:20:54,916 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 22:20:54,916 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:20:54,916 INFO L518 ElimStorePlain]: Eliminatee v_prenex_306 vanished before elimination [2021-03-10 22:20:54,917 INFO L518 ElimStorePlain]: Eliminatee v_prenex_308 vanished before elimination [2021-03-10 22:20:54,917 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-03-10 22:20:54,917 INFO L518 ElimStorePlain]: Eliminatee v_prenex_302 vanished before elimination [2021-03-10 22:20:54,917 INFO L518 ElimStorePlain]: Eliminatee v_prenex_304 vanished before elimination [2021-03-10 22:20:54,920 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 12 xjuncts. [2021-03-10 22:20:54,920 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 15 variables, input treesize:1663, output treesize:200 [2021-03-10 22:20:55,240 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-03-10 22:20:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:55,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:20:55,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:20:55,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770553109] [2021-03-10 22:20:55,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:55,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:55,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:55,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:55,448 INFO L87 Difference]: Start difference. First operand 277 states and 799 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:20:55,634 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-03-10 22:20:56,087 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2021-03-10 22:20:56,745 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2021-03-10 22:20:57,643 WARN L205 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 100 [2021-03-10 22:20:58,972 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 173 DAG size of output: 160 [2021-03-10 22:21:00,086 WARN L205 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 131 [2021-03-10 22:21:01,209 WARN L205 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 140 [2021-03-10 22:21:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:01,328 INFO L93 Difference]: Finished difference Result 449 states and 1281 transitions. [2021-03-10 22:21:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:21:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:21:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:01,330 INFO L225 Difference]: With dead ends: 449 [2021-03-10 22:21:01,330 INFO L226 Difference]: Without dead ends: 434 [2021-03-10 22:21:01,330 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 7393.7ms TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:21:01,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-03-10 22:21:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 283. [2021-03-10 22:21:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 2.900709219858156) internal successors, (818), 282 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 818 transitions. [2021-03-10 22:21:01,335 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 818 transitions. Word has length 20 [2021-03-10 22:21:01,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:01,335 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 818 transitions. [2021-03-10 22:21:01,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:21:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 818 transitions. [2021-03-10 22:21:01,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:21:01,336 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:01,336 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:21:01,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2362,42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:21:01,557 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:21:01,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:01,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1294229222, now seen corresponding path program 15 times [2021-03-10 22:21:01,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:01,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411914652] [2021-03-10 22:21:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:01,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411914652] [2021-03-10 22:21:01,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111624110] [2021-03-10 22:21:01,995 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 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 [2021-03-10 22:21:02,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 22:21:02,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:21:02,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:21:02,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:21:02,529 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 59 [2021-03-10 22:21:03,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:03,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:03,571 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:03,573 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:03,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:03,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:03,584 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:03,586 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:03,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:03,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:03,597 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:21:03,599 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:03,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:03,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:03,610 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:21:03,612 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:03,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:03,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:03,624 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:21:03,625 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:03,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:03,635 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:21:03,638 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:04,640 WARN L205 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2021-03-10 22:21:04,640 INFO L628 ElimStorePlain]: treesize reduction 588, result has 46.2 percent of original size [2021-03-10 22:21:04,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:04,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:04,650 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:04,652 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:04,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:04,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:04,662 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:21:04,664 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:04,672 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 7 treesize of output 5 [2021-03-10 22:21:04,674 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:05,112 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 22:21:05,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:05,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:05,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:05,123 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:21:05,125 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:05,132 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 7 treesize of output 5 [2021-03-10 22:21:05,135 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:05,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:05,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:05,149 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:05,979 WARN L205 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-03-10 22:21:05,980 INFO L628 ElimStorePlain]: treesize reduction 27, result has 94.0 percent of original size [2021-03-10 22:21:05,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:05,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:05,991 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:21:05,993 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:06,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:06,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:06,002 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:21:06,004 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:06,011 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 12 [2021-03-10 22:21:06,013 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:06,680 WARN L205 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-03-10 22:21:06,680 INFO L628 ElimStorePlain]: treesize reduction 34, result has 90.8 percent of original size [2021-03-10 22:21:06,690 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-03-10 22:21:06,690 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:313 [2021-03-10 22:21:07,171 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2021-03-10 22:21:07,661 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_327, v_prenex_329, array_6, v_prenex_331, v_prenex_325], 1=[v_prenex_328, array_3, v_prenex_330, v_prenex_324, v_prenex_326]} [2021-03-10 22:21:07,672 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 23 treesize of output 17 [2021-03-10 22:21:07,674 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:07,687 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 22 treesize of output 16 [2021-03-10 22:21:07,689 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:07,700 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 30 treesize of output 22 [2021-03-10 22:21:07,703 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:07,715 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 23 treesize of output 17 [2021-03-10 22:21:07,718 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:07,732 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 22 treesize of output 16 [2021-03-10 22:21:07,734 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:07,758 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 29 treesize of output 21 [2021-03-10 22:21:07,760 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:08,622 WARN L205 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 85 [2021-03-10 22:21:08,623 INFO L628 ElimStorePlain]: treesize reduction 1295, result has 19.5 percent of original size [2021-03-10 22:21:08,629 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 7 treesize of output 5 [2021-03-10 22:21:08,631 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:08,918 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-03-10 22:21:08,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:08,929 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 7 treesize of output 5 [2021-03-10 22:21:08,932 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:08,941 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 7 treesize of output 5 [2021-03-10 22:21:08,943 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:09,524 WARN L205 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2021-03-10 22:21:09,525 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-03-10 22:21:09,532 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 7 treesize of output 5 [2021-03-10 22:21:09,534 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:09,821 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 22:21:09,821 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:09,828 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 7 treesize of output 5 [2021-03-10 22:21:09,830 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:10,117 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-03-10 22:21:10,118 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:10,118 INFO L518 ElimStorePlain]: Eliminatee v_prenex_328 vanished before elimination [2021-03-10 22:21:10,118 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-03-10 22:21:10,118 INFO L518 ElimStorePlain]: Eliminatee v_prenex_330 vanished before elimination [2021-03-10 22:21:10,118 INFO L518 ElimStorePlain]: Eliminatee v_prenex_324 vanished before elimination [2021-03-10 22:21:10,118 INFO L518 ElimStorePlain]: Eliminatee v_prenex_326 vanished before elimination [2021-03-10 22:21:10,121 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 12 xjuncts. [2021-03-10 22:21:10,121 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 15 variables, input treesize:1723, output treesize:238 [2021-03-10 22:21:10,495 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-03-10 22:21:10,849 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-03-10 22:21:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:11,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:21:11,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:21:11,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021319722] [2021-03-10 22:21:11,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:11,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:11,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:11,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:11,015 INFO L87 Difference]: Start difference. First operand 283 states and 818 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:21:11,191 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-03-10 22:21:11,702 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2021-03-10 22:21:12,414 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2021-03-10 22:21:13,398 WARN L205 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 96 [2021-03-10 22:21:14,758 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 163 DAG size of output: 151 [2021-03-10 22:21:16,019 WARN L205 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 123 [2021-03-10 22:21:17,353 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 144 DAG size of output: 131 [2021-03-10 22:21:17,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:17,469 INFO L93 Difference]: Finished difference Result 479 states and 1342 transitions. [2021-03-10 22:21:17,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:21:17,471 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:21:17,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:17,471 INFO L225 Difference]: With dead ends: 479 [2021-03-10 22:21:17,471 INFO L226 Difference]: Without dead ends: 464 [2021-03-10 22:21:17,472 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 7694.8ms TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:21:17,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-03-10 22:21:17,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 286. [2021-03-10 22:21:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.9192982456140353) internal successors, (832), 285 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:17,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 832 transitions. [2021-03-10 22:21:17,475 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 832 transitions. Word has length 20 [2021-03-10 22:21:17,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:17,476 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 832 transitions. [2021-03-10 22:21:17,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:21:17,476 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 832 transitions. [2021-03-10 22:21:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:21:17,476 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:17,476 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:21:17,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2561,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:21:17,677 INFO L428 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:21:17,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:17,677 INFO L82 PathProgramCache]: Analyzing trace with hash -404491166, now seen corresponding path program 16 times [2021-03-10 22:21:17,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:17,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157616413] [2021-03-10 22:21:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:18,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157616413] [2021-03-10 22:21:18,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256467209] [2021-03-10 22:21:18,168 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 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 [2021-03-10 22:21:18,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 22:21:18,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:21:18,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:21:18,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:21:18,740 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 59 [2021-03-10 22:21:20,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:20,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:20,033 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:20,035 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:20,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:20,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:20,047 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:21:20,049 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:20,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:20,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:20,062 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:21:20,063 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:20,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:20,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:20,075 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:20,077 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:20,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:20,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:20,089 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:21:20,091 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:20,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:20,101 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:21:20,103 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:21,166 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2021-03-10 22:21:21,167 INFO L628 ElimStorePlain]: treesize reduction 602, result has 44.9 percent of original size [2021-03-10 22:21:21,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:21,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:21,177 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:21,179 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:21,187 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 7 treesize of output 5 [2021-03-10 22:21:21,189 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:21,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:21,201 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:21,203 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:21,646 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 22:21:21,647 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:21,655 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 7 treesize of output 5 [2021-03-10 22:21:21,658 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:21,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:21,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:21,668 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:21,670 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:21,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:21,678 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:21,681 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:22,505 WARN L205 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-03-10 22:21:22,506 INFO L628 ElimStorePlain]: treesize reduction 27, result has 93.9 percent of original size [2021-03-10 22:21:22,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:22,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:22,515 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:21:22,518 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:22,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:22,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:22,528 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:21:22,530 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:22,537 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 12 [2021-03-10 22:21:22,540 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:23,245 WARN L205 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-03-10 22:21:23,246 INFO L628 ElimStorePlain]: treesize reduction 34, result has 90.6 percent of original size [2021-03-10 22:21:23,257 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-03-10 22:21:23,257 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:306 [2021-03-10 22:21:23,815 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2021-03-10 22:21:24,252 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_349, v_prenex_351, array_6, v_prenex_353, v_prenex_347], 1=[array_3, v_prenex_350, v_prenex_352, v_prenex_346, v_prenex_348]} [2021-03-10 22:21:24,269 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 22 treesize of output 16 [2021-03-10 22:21:24,272 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:24,289 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 29 treesize of output 21 [2021-03-10 22:21:24,292 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:24,307 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 30 treesize of output 22 [2021-03-10 22:21:24,310 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:24,326 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 23 treesize of output 17 [2021-03-10 22:21:24,329 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:24,345 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:21:24,347 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:24,363 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 23 treesize of output 17 [2021-03-10 22:21:24,366 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:25,425 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 142 DAG size of output: 89 [2021-03-10 22:21:25,426 INFO L628 ElimStorePlain]: treesize reduction 1239, result has 21.0 percent of original size [2021-03-10 22:21:25,434 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 7 treesize of output 5 [2021-03-10 22:21:25,436 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:25,754 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-03-10 22:21:25,754 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:25,762 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 12 [2021-03-10 22:21:25,764 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:25,772 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 7 treesize of output 5 [2021-03-10 22:21:25,774 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:26,388 WARN L205 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-03-10 22:21:26,388 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-03-10 22:21:26,395 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 7 treesize of output 5 [2021-03-10 22:21:26,398 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:26,687 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-03-10 22:21:26,688 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:26,694 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 12 [2021-03-10 22:21:26,697 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:26,979 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-03-10 22:21:26,980 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:26,980 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-03-10 22:21:26,980 INFO L518 ElimStorePlain]: Eliminatee v_prenex_350 vanished before elimination [2021-03-10 22:21:26,980 INFO L518 ElimStorePlain]: Eliminatee v_prenex_352 vanished before elimination [2021-03-10 22:21:26,980 INFO L518 ElimStorePlain]: Eliminatee v_prenex_346 vanished before elimination [2021-03-10 22:21:26,980 INFO L518 ElimStorePlain]: Eliminatee v_prenex_348 vanished before elimination [2021-03-10 22:21:26,984 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 12 xjuncts. [2021-03-10 22:21:26,984 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 15 variables, input treesize:1681, output treesize:238 [2021-03-10 22:21:27,397 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-03-10 22:21:27,720 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-03-10 22:21:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:27,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:21:27,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:21:27,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525247014] [2021-03-10 22:21:27,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:27,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:27,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:27,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:27,894 INFO L87 Difference]: Start difference. First operand 286 states and 832 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:21:28,077 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-03-10 22:21:28,626 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2021-03-10 22:21:29,433 WARN L205 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2021-03-10 22:21:30,546 WARN L205 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2021-03-10 22:21:32,193 WARN L205 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 157 DAG size of output: 148 [2021-03-10 22:21:33,596 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 137 DAG size of output: 128 [2021-03-10 22:21:35,175 WARN L205 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 153 DAG size of output: 142 [2021-03-10 22:21:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:35,304 INFO L93 Difference]: Finished difference Result 449 states and 1275 transitions. [2021-03-10 22:21:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:21:35,306 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:21:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:35,307 INFO L225 Difference]: With dead ends: 449 [2021-03-10 22:21:35,307 INFO L226 Difference]: Without dead ends: 427 [2021-03-10 22:21:35,307 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 8741.4ms TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:21:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-03-10 22:21:35,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 280. [2021-03-10 22:21:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.89247311827957) internal successors, (807), 279 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 807 transitions. [2021-03-10 22:21:35,312 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 807 transitions. Word has length 20 [2021-03-10 22:21:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:35,312 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 807 transitions. [2021-03-10 22:21:35,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:21:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 807 transitions. [2021-03-10 22:21:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:21:35,313 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:35,313 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:21:35,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2717,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:21:35,527 INFO L428 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:21:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:35,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1829459024, now seen corresponding path program 17 times [2021-03-10 22:21:35,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:35,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723349111] [2021-03-10 22:21:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:36,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723349111] [2021-03-10 22:21:36,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435791269] [2021-03-10 22:21:36,006 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 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 [2021-03-10 22:21:36,030 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 22:21:36,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:21:36,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:21:36,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:21:36,398 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-03-10 22:21:36,673 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 22 treesize of output 16 [2021-03-10 22:21:36,676 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,682 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 30 treesize of output 22 [2021-03-10 22:21:36,685 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,692 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 24 treesize of output 18 [2021-03-10 22:21:36,694 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,701 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 38 treesize of output 28 [2021-03-10 22:21:36,704 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,710 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 22 treesize of output 16 [2021-03-10 22:21:36,712 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,718 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 22 treesize of output 16 [2021-03-10 22:21:36,720 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,726 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 29 treesize of output 21 [2021-03-10 22:21:36,728 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,735 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 22 treesize of output 16 [2021-03-10 22:21:36,736 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,742 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 23 treesize of output 17 [2021-03-10 22:21:36,745 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,751 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 23 treesize of output 17 [2021-03-10 22:21:36,754 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,760 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 30 treesize of output 22 [2021-03-10 22:21:36,762 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,768 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 31 treesize of output 23 [2021-03-10 22:21:36,771 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,777 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 37 treesize of output 27 [2021-03-10 22:21:36,779 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,786 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 31 treesize of output 23 [2021-03-10 22:21:36,789 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,796 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 23 treesize of output 17 [2021-03-10 22:21:36,798 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,804 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 23 treesize of output 17 [2021-03-10 22:21:36,806 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,812 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:21:36,813 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,821 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 29 treesize of output 21 [2021-03-10 22:21:36,823 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,830 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 30 treesize of output 22 [2021-03-10 22:21:36,832 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,838 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 30 treesize of output 22 [2021-03-10 22:21:36,840 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,846 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 23 treesize of output 17 [2021-03-10 22:21:36,848 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,854 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 31 treesize of output 23 [2021-03-10 22:21:36,856 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,863 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 23 treesize of output 17 [2021-03-10 22:21:36,865 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:36,871 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 30 treesize of output 22 [2021-03-10 22:21:36,873 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:37,298 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2021-03-10 22:21:37,299 INFO L628 ElimStorePlain]: treesize reduction 255, result has 43.8 percent of original size [2021-03-10 22:21:37,301 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:21:37,302 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 1 variables, input treesize:1039, output treesize:199 [2021-03-10 22:21:37,540 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 22:21:38,142 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-03-10 22:21:38,537 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-03-10 22:21:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:38,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:21:38,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-03-10 22:21:38,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28117513] [2021-03-10 22:21:38,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-03-10 22:21:38,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:38,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-03-10 22:21:38,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-03-10 22:21:38,738 INFO L87 Difference]: Start difference. First operand 280 states and 807 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-03-10 22:21:38,906 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2021-03-10 22:21:39,326 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-03-10 22:21:39,915 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-03-10 22:21:40,394 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2021-03-10 22:21:41,560 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2021-03-10 22:21:42,631 WARN L205 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-03-10 22:21:43,919 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2021-03-10 22:21:44,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:44,011 INFO L93 Difference]: Finished difference Result 474 states and 1331 transitions. [2021-03-10 22:21:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:21:44,013 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 20 [2021-03-10 22:21:44,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:44,014 INFO L225 Difference]: With dead ends: 474 [2021-03-10 22:21:44,014 INFO L226 Difference]: Without dead ends: 459 [2021-03-10 22:21:44,014 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 6549.8ms TimeCoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2021-03-10 22:21:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-03-10 22:21:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 286. [2021-03-10 22:21:44,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.9192982456140353) internal successors, (832), 285 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 832 transitions. [2021-03-10 22:21:44,018 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 832 transitions. Word has length 20 [2021-03-10 22:21:44,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:44,018 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 832 transitions. [2021-03-10 22:21:44,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-03-10 22:21:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 832 transitions. [2021-03-10 22:21:44,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:21:44,018 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:44,018 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:21:44,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2910 [2021-03-10 22:21:44,219 INFO L428 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:21:44,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:44,219 INFO L82 PathProgramCache]: Analyzing trace with hash 130738636, now seen corresponding path program 18 times [2021-03-10 22:21:44,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:44,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713754817] [2021-03-10 22:21:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:44,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713754817] [2021-03-10 22:21:44,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417672842] [2021-03-10 22:21:44,669 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 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 [2021-03-10 22:21:44,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 22:21:44,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:21:44,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 22:21:44,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:21:44,899 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2021-03-10 22:21:46,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:46,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:46,197 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-03-10 22:21:46,200 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:46,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:46,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:46,213 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:21:46,216 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:46,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:46,226 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:21:46,229 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:47,043 WARN L205 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2021-03-10 22:21:47,044 INFO L628 ElimStorePlain]: treesize reduction 181, result has 65.3 percent of original size [2021-03-10 22:21:47,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:47,054 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:47,056 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:47,435 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-03-10 22:21:47,436 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:47,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:47,446 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:47,448 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:47,813 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-10 22:21:47,814 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:47,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:47,823 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:21:47,825 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:48,183 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-03-10 22:21:48,183 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:48,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:48,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:48,194 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:48,196 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:48,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:48,205 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:21:48,208 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:48,546 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 22:21:48,546 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:48,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:48,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:48,557 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:21:48,559 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:48,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:21:48,568 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:21:48,570 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:48,909 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-03-10 22:21:48,909 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:48,921 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-03-10 22:21:48,921 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:637, output treesize:274 [2021-03-10 22:21:49,547 WARN L205 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2021-03-10 22:21:49,995 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_390, v_prenex_380, v_prenex_370, v_prenex_382, v_prenex_372, v_prenex_384, v_prenex_374, v_prenex_386, array_6, v_prenex_376, v_prenex_378, v_prenex_368], 1=[array_0, v_prenex_381, v_prenex_371, v_prenex_383, v_prenex_373, v_prenex_385, v_prenex_375, v_prenex_387, v_prenex_377, v_prenex_367, v_prenex_379, v_prenex_369]} [2021-03-10 22:21:50,010 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 12 [2021-03-10 22:21:50,012 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:51,120 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 219 DAG size of output: 98 [2021-03-10 22:21:51,121 INFO L628 ElimStorePlain]: treesize reduction 991, result has 26.0 percent of original size [2021-03-10 22:21:51,130 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 7 treesize of output 5 [2021-03-10 22:21:51,134 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:51,538 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-03-10 22:21:51,539 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:51,548 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 8 treesize of output 6 [2021-03-10 22:21:51,551 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:51,559 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 7 treesize of output 5 [2021-03-10 22:21:51,562 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:52,227 WARN L205 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-03-10 22:21:52,228 INFO L628 ElimStorePlain]: treesize reduction 31, result has 90.5 percent of original size [2021-03-10 22:21:52,228 INFO L518 ElimStorePlain]: Eliminatee v_prenex_382 vanished before elimination [2021-03-10 22:21:52,237 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 9 treesize of output 7 [2021-03-10 22:21:52,240 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:52,562 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 22:21:52,563 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:52,563 INFO L518 ElimStorePlain]: Eliminatee v_prenex_384 vanished before elimination [2021-03-10 22:21:52,563 INFO L518 ElimStorePlain]: Eliminatee v_prenex_374 vanished before elimination [2021-03-10 22:21:52,563 INFO L518 ElimStorePlain]: Eliminatee v_prenex_386 vanished before elimination [2021-03-10 22:21:52,571 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 12 [2021-03-10 22:21:52,574 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:52,901 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 22:21:52,902 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:52,910 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 7 treesize of output 5 [2021-03-10 22:21:52,913 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:53,224 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 22:21:53,225 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:53,225 INFO L518 ElimStorePlain]: Eliminatee v_prenex_378 vanished before elimination [2021-03-10 22:21:53,233 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 7 treesize of output 5 [2021-03-10 22:21:53,236 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:21:53,546 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 22:21:53,547 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee v_prenex_381 vanished before elimination [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee v_prenex_371 vanished before elimination [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee v_prenex_383 vanished before elimination [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee v_prenex_373 vanished before elimination [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee v_prenex_385 vanished before elimination [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee v_prenex_375 vanished before elimination [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee v_prenex_387 vanished before elimination [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee v_prenex_377 vanished before elimination [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee v_prenex_367 vanished before elimination [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee v_prenex_379 vanished before elimination [2021-03-10 22:21:53,547 INFO L518 ElimStorePlain]: Eliminatee v_prenex_369 vanished before elimination [2021-03-10 22:21:53,551 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 24 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-03-10 22:21:53,551 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 36 variables, input treesize:1347, output treesize:222 [2021-03-10 22:21:53,840 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 22:21:54,320 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-03-10 22:21:54,529 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2021-03-10 22:21:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:54,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:21:54,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:21:54,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79001396] [2021-03-10 22:21:54,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:54,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:54,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:54,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:54,556 INFO L87 Difference]: Start difference. First operand 286 states and 832 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:21:54,759 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2021-03-10 22:21:55,383 WARN L205 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-10 22:21:56,153 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2021-03-10 22:21:56,839 WARN L205 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2021-03-10 22:21:58,323 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 163 DAG size of output: 150 [2021-03-10 22:22:00,211 WARN L205 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 116 DAG size of output: 110 [2021-03-10 22:22:01,210 WARN L205 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2021-03-10 22:22:03,559 WARN L205 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 138 DAG size of output: 125 [2021-03-10 22:22:04,331 WARN L205 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2021-03-10 22:22:06,855 WARN L205 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 146 DAG size of output: 129 [2021-03-10 22:22:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:06,952 INFO L93 Difference]: Finished difference Result 529 states and 1446 transitions. [2021-03-10 22:22:06,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:22:06,954 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:22:06,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:06,955 INFO L225 Difference]: With dead ends: 529 [2021-03-10 22:22:06,955 INFO L226 Difference]: Without dead ends: 485 [2021-03-10 22:22:06,955 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 13676.4ms TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2021-03-10 22:22:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-03-10 22:22:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 283. [2021-03-10 22:22:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 2.900709219858156) internal successors, (818), 282 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:06,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 818 transitions. [2021-03-10 22:22:06,960 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 818 transitions. Word has length 20 [2021-03-10 22:22:06,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:06,960 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 818 transitions. [2021-03-10 22:22:06,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:22:06,960 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 818 transitions. [2021-03-10 22:22:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:22:06,960 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:06,960 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:22:07,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2964 [2021-03-10 22:22:07,175 INFO L428 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:22:07,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:07,175 INFO L82 PathProgramCache]: Analyzing trace with hash -42509056, now seen corresponding path program 19 times [2021-03-10 22:22:07,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:07,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465974432] [2021-03-10 22:22:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:22:07,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465974432] [2021-03-10 22:22:07,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217112963] [2021-03-10 22:22:07,662 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 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 [2021-03-10 22:22:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:07,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:22:07,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:22:07,916 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-03-10 22:22:08,701 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 22:22:09,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:09,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:09,770 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-03-10 22:22:09,773 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:09,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:09,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:09,786 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:22:09,789 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:09,798 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:22:09,801 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:10,818 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 134 DAG size of output: 125 [2021-03-10 22:22:10,819 INFO L628 ElimStorePlain]: treesize reduction 206, result has 68.5 percent of original size [2021-03-10 22:22:10,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:10,830 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:22:10,833 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:11,328 WARN L205 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-03-10 22:22:11,329 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:11,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:11,340 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:11,343 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:11,824 WARN L205 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-03-10 22:22:11,825 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:11,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:11,837 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:11,839 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:12,314 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-03-10 22:22:12,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:12,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:12,326 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:12,328 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:12,797 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-03-10 22:22:12,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:12,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:12,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:12,811 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:12,814 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:12,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:12,825 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:22:12,827 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:13,260 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-03-10 22:22:13,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:13,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:13,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:13,273 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:13,275 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:13,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:13,286 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:22:13,288 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:13,732 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-03-10 22:22:13,732 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:13,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:13,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:13,744 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:22:13,748 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:13,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:13,758 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:13,761 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:14,170 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-03-10 22:22:14,171 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:14,188 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-03-10 22:22:14,188 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 16 variables, input treesize:801, output treesize:361 [2021-03-10 22:22:14,799 WARN L205 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 102 [2021-03-10 22:22:15,330 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2021-03-10 22:22:15,830 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_416, v_prenex_418, array_6, v_prenex_420], 1=[v_prenex_415, v_prenex_417, array_0, v_prenex_419]} [2021-03-10 22:22:15,839 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:22:15,842 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:15,852 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 22 treesize of output 16 [2021-03-10 22:22:15,855 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:15,866 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:22:15,869 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:15,882 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 22 treesize of output 16 [2021-03-10 22:22:15,884 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:15,897 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 22 treesize of output 16 [2021-03-10 22:22:15,899 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:15,913 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 29 treesize of output 21 [2021-03-10 22:22:15,917 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:16,588 WARN L205 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-03-10 22:22:16,589 INFO L628 ElimStorePlain]: treesize reduction 741, result has 21.3 percent of original size [2021-03-10 22:22:16,596 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 7 treesize of output 5 [2021-03-10 22:22:16,599 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:16,823 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 22:22:16,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:16,832 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 7 treesize of output 5 [2021-03-10 22:22:16,835 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:17,058 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 22:22:17,058 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:17,066 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 7 treesize of output 5 [2021-03-10 22:22:17,069 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:17,074 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:22:17,077 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:17,241 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-03-10 22:22:17,242 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:17,242 INFO L518 ElimStorePlain]: Eliminatee v_prenex_415 vanished before elimination [2021-03-10 22:22:17,242 INFO L518 ElimStorePlain]: Eliminatee v_prenex_417 vanished before elimination [2021-03-10 22:22:17,242 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:22:17,242 INFO L518 ElimStorePlain]: Eliminatee v_prenex_419 vanished before elimination [2021-03-10 22:22:17,244 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 22:22:17,244 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1125, output treesize:122 [2021-03-10 22:22:17,588 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-03-10 22:22:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:22:17,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:22:17,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:22:17,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836916018] [2021-03-10 22:22:17,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:22:17,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:17,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:22:17,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:22:17,785 INFO L87 Difference]: Start difference. First operand 283 states and 818 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:22:18,020 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2021-03-10 22:22:18,681 WARN L205 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-03-10 22:22:19,598 WARN L205 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2021-03-10 22:22:20,795 WARN L205 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 89 [2021-03-10 22:22:22,748 WARN L205 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 193 DAG size of output: 175 [2021-03-10 22:22:25,768 WARN L205 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 228 DAG size of output: 198 [2021-03-10 22:22:27,085 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 122 DAG size of output: 109 [2021-03-10 22:22:28,575 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 132 DAG size of output: 118 [2021-03-10 22:22:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:28,700 INFO L93 Difference]: Finished difference Result 463 states and 1296 transitions. [2021-03-10 22:22:28,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:22:28,702 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:22:28,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:28,703 INFO L225 Difference]: With dead ends: 463 [2021-03-10 22:22:28,703 INFO L226 Difference]: Without dead ends: 412 [2021-03-10 22:22:28,704 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 12251.2ms TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-03-10 22:22:28,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-03-10 22:22:28,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 280. [2021-03-10 22:22:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.89247311827957) internal successors, (807), 279 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 807 transitions. [2021-03-10 22:22:28,707 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 807 transitions. Word has length 20 [2021-03-10 22:22:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:28,707 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 807 transitions. [2021-03-10 22:22:28,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:22:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 807 transitions. [2021-03-10 22:22:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:22:28,707 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:28,707 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:22:28,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3080 [2021-03-10 22:22:28,908 INFO L428 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:22:28,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:28,908 INFO L82 PathProgramCache]: Analyzing trace with hash -361470104, now seen corresponding path program 20 times [2021-03-10 22:22:28,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:28,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300775154] [2021-03-10 22:22:28,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:22:29,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300775154] [2021-03-10 22:22:29,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772866986] [2021-03-10 22:22:29,526 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 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 [2021-03-10 22:22:29,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:22:29,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:22:29,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:22:29,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:22:29,817 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 22:22:30,487 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2021-03-10 22:22:31,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:31,884 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:22:31,887 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:33,138 WARN L205 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 134 DAG size of output: 124 [2021-03-10 22:22:33,140 INFO L628 ElimStorePlain]: treesize reduction 226, result has 67.6 percent of original size [2021-03-10 22:22:33,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:33,152 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:33,155 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:33,688 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-03-10 22:22:33,689 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:33,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:33,700 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:33,702 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:34,224 WARN L205 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-03-10 22:22:34,225 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:34,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:34,236 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:34,239 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:34,756 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-03-10 22:22:34,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:34,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:34,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:34,770 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:22:34,772 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:34,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:34,784 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:22:34,786 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:35,282 WARN L205 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-03-10 22:22:35,283 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:35,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:35,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:35,296 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:22:35,299 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:35,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:35,310 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:22:35,313 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:35,776 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-03-10 22:22:35,776 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:35,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:35,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:35,789 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:22:35,792 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:35,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:35,803 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:22:35,806 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:36,625 WARN L205 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2021-03-10 22:22:36,626 INFO L628 ElimStorePlain]: treesize reduction 21, result has 94.1 percent of original size [2021-03-10 22:22:36,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:36,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:36,637 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:22:36,640 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:36,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:36,649 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:36,652 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:37,050 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-03-10 22:22:37,051 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:37,070 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-03-10 22:22:37,070 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 16 variables, input treesize:705, output treesize:310 [2021-03-10 22:22:37,593 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 94 [2021-03-10 22:22:38,126 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2021-03-10 22:22:38,563 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-03-10 22:22:39,230 INFO L446 ElimStorePlain]: Different costs {0=[array_6, v_prenex_445], 1=[array_0, v_prenex_444]} [2021-03-10 22:22:39,239 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 22 treesize of output 16 [2021-03-10 22:22:39,242 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:39,249 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:22:39,251 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:39,260 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 29 treesize of output 21 [2021-03-10 22:22:39,263 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:39,272 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:22:39,274 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:39,282 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:22:39,284 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:39,292 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:22:39,294 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:39,709 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2021-03-10 22:22:39,710 INFO L628 ElimStorePlain]: treesize reduction 266, result has 32.5 percent of original size [2021-03-10 22:22:39,716 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 7 treesize of output 5 [2021-03-10 22:22:39,720 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:39,882 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 22:22:39,882 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:39,883 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:22:39,883 INFO L518 ElimStorePlain]: Eliminatee v_prenex_444 vanished before elimination [2021-03-10 22:22:39,885 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 22:22:39,885 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 6 variables, input treesize:630, output treesize:105 [2021-03-10 22:22:40,099 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 22:22:40,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:22:40,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:22:40,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:22:40,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117557720] [2021-03-10 22:22:40,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:22:40,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:40,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:22:40,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:22:40,299 INFO L87 Difference]: Start difference. First operand 280 states and 807 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:22:40,580 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-03-10 22:22:41,050 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-03-10 22:22:42,297 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2021-03-10 22:22:43,631 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 142 DAG size of output: 135 [2021-03-10 22:22:45,675 WARN L205 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 166 DAG size of output: 146 [2021-03-10 22:22:47,714 WARN L205 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 175 DAG size of output: 151 [2021-03-10 22:22:50,050 WARN L205 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 183 DAG size of output: 163 [2021-03-10 22:22:50,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:50,298 INFO L93 Difference]: Finished difference Result 519 states and 1454 transitions. [2021-03-10 22:22:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:22:50,301 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:22:50,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:50,302 INFO L225 Difference]: With dead ends: 519 [2021-03-10 22:22:50,302 INFO L226 Difference]: Without dead ends: 479 [2021-03-10 22:22:50,302 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 11671.9ms TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:22:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-03-10 22:22:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 292. [2021-03-10 22:22:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 2.8900343642611683) internal successors, (841), 291 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 841 transitions. [2021-03-10 22:22:50,306 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 841 transitions. Word has length 20 [2021-03-10 22:22:50,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:50,306 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 841 transitions. [2021-03-10 22:22:50,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:22:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 841 transitions. [2021-03-10 22:22:50,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:22:50,307 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:50,307 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:22:50,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3243 [2021-03-10 22:22:50,507 INFO L428 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:22:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:50,508 INFO L82 PathProgramCache]: Analyzing trace with hash -758387758, now seen corresponding path program 21 times [2021-03-10 22:22:50,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:50,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663069489] [2021-03-10 22:22:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:22:51,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663069489] [2021-03-10 22:22:51,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890806365] [2021-03-10 22:22:51,139 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 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 [2021-03-10 22:22:51,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 22:22:51,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:22:51,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:22:51,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:22:51,471 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 22:22:52,018 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-03-10 22:22:53,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:53,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:53,252 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:22:53,256 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:53,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:53,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:53,273 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:22:53,276 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:53,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:53,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:53,289 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:22:53,292 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:53,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:53,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:53,305 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:22:53,308 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:53,316 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:22:53,319 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:53,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:53,330 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:22:53,334 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:54,382 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-03-10 22:22:54,383 INFO L628 ElimStorePlain]: treesize reduction 537, result has 43.1 percent of original size [2021-03-10 22:22:54,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:54,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:54,395 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:22:54,398 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:54,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:54,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:54,411 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:22:54,414 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:54,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:54,423 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:54,426 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:54,891 WARN L205 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-03-10 22:22:54,892 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:54,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:54,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:54,902 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:22:54,905 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:54,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:54,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:54,915 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-03-10 22:22:54,918 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:54,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:54,927 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:22:54,929 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:55,732 WARN L205 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2021-03-10 22:22:55,733 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-03-10 22:22:55,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:55,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:55,745 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:22:55,748 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:55,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:55,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:55,759 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:22:55,762 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:55,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:22:55,773 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:22:55,776 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:56,187 WARN L205 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 22:22:56,188 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:56,208 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-03-10 22:22:56,208 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1129, output treesize:308 [2021-03-10 22:22:56,799 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 94 [2021-03-10 22:22:57,222 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-03-10 22:22:57,860 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_462, array_6, v_prenex_464, v_prenex_466], 1=[array_0, v_prenex_461, v_prenex_463, v_prenex_465]} [2021-03-10 22:22:57,872 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 29 treesize of output 21 [2021-03-10 22:22:57,875 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:57,887 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 29 treesize of output 21 [2021-03-10 22:22:57,890 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:57,905 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 22 treesize of output 16 [2021-03-10 22:22:57,908 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:57,922 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 29 treesize of output 21 [2021-03-10 22:22:57,925 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:57,937 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:22:57,939 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:57,953 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 36 treesize of output 26 [2021-03-10 22:22:57,956 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:58,869 WARN L205 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-03-10 22:22:58,870 INFO L628 ElimStorePlain]: treesize reduction 878, result has 21.0 percent of original size [2021-03-10 22:22:58,879 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 8 treesize of output 6 [2021-03-10 22:22:58,883 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:58,892 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 7 treesize of output 5 [2021-03-10 22:22:58,897 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:59,443 WARN L205 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2021-03-10 22:22:59,444 INFO L628 ElimStorePlain]: treesize reduction 30, result has 86.3 percent of original size [2021-03-10 22:22:59,452 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 7 treesize of output 5 [2021-03-10 22:22:59,456 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:59,720 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-03-10 22:22:59,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:59,728 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 7 treesize of output 5 [2021-03-10 22:22:59,732 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:22:59,994 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 22:22:59,995 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:22:59,995 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:22:59,995 INFO L518 ElimStorePlain]: Eliminatee v_prenex_461 vanished before elimination [2021-03-10 22:22:59,995 INFO L518 ElimStorePlain]: Eliminatee v_prenex_463 vanished before elimination [2021-03-10 22:22:59,995 INFO L518 ElimStorePlain]: Eliminatee v_prenex_465 vanished before elimination [2021-03-10 22:22:59,998 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:22:59,998 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1277, output treesize:143 [2021-03-10 22:23:00,522 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-03-10 22:23:01,021 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-03-10 22:23:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:01,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:23:01,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:23:01,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466555891] [2021-03-10 22:23:01,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:01,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:01,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:01,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:01,271 INFO L87 Difference]: Start difference. First operand 292 states and 841 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:23:01,537 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-03-10 22:23:02,055 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-03-10 22:23:03,167 WARN L205 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-03-10 22:23:04,599 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2021-03-10 22:23:06,066 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 147 DAG size of output: 137 [2021-03-10 22:23:07,852 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 156 DAG size of output: 138 [2021-03-10 22:23:09,897 WARN L205 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 160 DAG size of output: 141 [2021-03-10 22:23:11,557 WARN L205 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 150 DAG size of output: 133 [2021-03-10 22:23:13,386 WARN L205 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 163 DAG size of output: 145 [2021-03-10 22:23:15,449 WARN L205 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2021-03-10 22:23:17,335 WARN L205 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 157 DAG size of output: 140 [2021-03-10 22:23:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:17,485 INFO L93 Difference]: Finished difference Result 599 states and 1645 transitions. [2021-03-10 22:23:17,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:23:17,488 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:23:17,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:17,489 INFO L225 Difference]: With dead ends: 599 [2021-03-10 22:23:17,489 INFO L226 Difference]: Without dead ends: 569 [2021-03-10 22:23:17,489 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 17849.7ms TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2021-03-10 22:23:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-10 22:23:17,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 298. [2021-03-10 22:23:17,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.9158249158249157) internal successors, (866), 297 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:17,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 866 transitions. [2021-03-10 22:23:17,493 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 866 transitions. Word has length 20 [2021-03-10 22:23:17,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:17,493 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 866 transitions. [2021-03-10 22:23:17,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:23:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 866 transitions. [2021-03-10 22:23:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:23:17,493 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:17,493 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:23:17,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3432,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:23:17,694 INFO L428 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:23:17,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:17,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1837859150, now seen corresponding path program 22 times [2021-03-10 22:23:17,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:17,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896121015] [2021-03-10 22:23:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:18,465 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-03-10 22:23:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:18,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896121015] [2021-03-10 22:23:18,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757044632] [2021-03-10 22:23:18,640 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:23:18,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 22:23:18,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:23:18,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:23:18,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:23:18,953 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 22:23:19,720 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2021-03-10 22:23:21,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:21,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:21,138 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:23:21,143 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:21,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:21,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:21,163 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:23:21,168 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:21,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:21,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:21,189 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:23:21,192 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:21,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:21,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:21,208 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:23:21,212 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:21,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:21,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:21,228 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:23:21,232 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:21,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:21,245 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:23:21,249 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:22,751 WARN L205 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2021-03-10 22:23:22,752 INFO L628 ElimStorePlain]: treesize reduction 584, result has 42.7 percent of original size [2021-03-10 22:23:22,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:22,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:22,767 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:23:22,772 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:22,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:22,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:22,784 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:23:22,787 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:22,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:22,797 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:23:22,800 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:23,870 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2021-03-10 22:23:23,871 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.8 percent of original size [2021-03-10 22:23:23,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:23,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:23,883 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:23:23,886 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:23,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:23,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:23,899 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:23:23,902 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:23,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:23,912 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:23:23,915 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:24,440 WARN L205 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 22:23:24,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:23:24,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:24,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:24,455 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:23:24,459 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:24,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:24,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:24,471 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-03-10 22:23:24,476 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:24,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:23:24,486 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:23:24,490 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:25,371 WARN L205 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2021-03-10 22:23:25,372 INFO L628 ElimStorePlain]: treesize reduction 21, result has 93.4 percent of original size [2021-03-10 22:23:25,392 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-03-10 22:23:25,393 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1129, output treesize:286 [2021-03-10 22:23:26,029 WARN L205 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 90 [2021-03-10 22:23:26,499 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-03-10 22:23:27,213 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_485, array_6, v_prenex_487, v_prenex_489], 1=[array_0, v_prenex_484, v_prenex_486, v_prenex_488]} [2021-03-10 22:23:27,230 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 15 treesize of output 11 [2021-03-10 22:23:27,235 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:27,255 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 29 treesize of output 21 [2021-03-10 22:23:27,258 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:27,279 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 15 treesize of output 11 [2021-03-10 22:23:27,285 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:27,300 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 22 treesize of output 16 [2021-03-10 22:23:27,305 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:27,319 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 22 treesize of output 16 [2021-03-10 22:23:27,323 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:27,338 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 22 treesize of output 16 [2021-03-10 22:23:27,342 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:28,315 WARN L205 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-03-10 22:23:28,316 INFO L628 ElimStorePlain]: treesize reduction 841, result has 21.8 percent of original size [2021-03-10 22:23:28,325 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 7 treesize of output 5 [2021-03-10 22:23:28,329 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:28,688 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 22:23:28,689 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:23:28,698 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 8 treesize of output 6 [2021-03-10 22:23:28,702 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:28,711 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 7 treesize of output 5 [2021-03-10 22:23:28,715 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:29,320 WARN L205 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-03-10 22:23:29,321 INFO L628 ElimStorePlain]: treesize reduction 30, result has 85.8 percent of original size [2021-03-10 22:23:29,330 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 7 treesize of output 5 [2021-03-10 22:23:29,334 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:29,622 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 22:23:29,623 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:23:29,623 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:23:29,623 INFO L518 ElimStorePlain]: Eliminatee v_prenex_484 vanished before elimination [2021-03-10 22:23:29,623 INFO L518 ElimStorePlain]: Eliminatee v_prenex_486 vanished before elimination [2021-03-10 22:23:29,623 INFO L518 ElimStorePlain]: Eliminatee v_prenex_488 vanished before elimination [2021-03-10 22:23:29,627 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:23:29,627 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1193, output treesize:143 [2021-03-10 22:23:30,160 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-03-10 22:23:30,665 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-03-10 22:23:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:30,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:23:30,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:23:30,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080747691] [2021-03-10 22:23:30,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:30,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:30,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:30,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:30,919 INFO L87 Difference]: Start difference. First operand 298 states and 866 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:23:31,280 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-03-10 22:23:31,866 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-03-10 22:23:33,185 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2021-03-10 22:23:34,957 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2021-03-10 22:23:37,396 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 146 DAG size of output: 137 [2021-03-10 22:23:39,566 WARN L205 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 157 DAG size of output: 141 [2021-03-10 22:23:41,895 WARN L205 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 150 DAG size of output: 133 [2021-03-10 22:23:45,477 WARN L205 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 177 DAG size of output: 153 [2021-03-10 22:23:48,091 WARN L205 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 163 DAG size of output: 146 [2021-03-10 22:23:52,042 WARN L205 SmtUtils]: Spent 3.76 s on a formula simplification. DAG size of input: 179 DAG size of output: 157 [2021-03-10 22:23:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:52,242 INFO L93 Difference]: Finished difference Result 599 states and 1633 transitions. [2021-03-10 22:23:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:23:52,245 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:23:52,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:52,246 INFO L225 Difference]: With dead ends: 599 [2021-03-10 22:23:52,246 INFO L226 Difference]: Without dead ends: 555 [2021-03-10 22:23:52,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 23080.5ms TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2021-03-10 22:23:52,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-03-10 22:23:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 295. [2021-03-10 22:23:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 2.8979591836734695) internal successors, (852), 294 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 852 transitions. [2021-03-10 22:23:52,251 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 852 transitions. Word has length 20 [2021-03-10 22:23:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:52,252 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 852 transitions. [2021-03-10 22:23:52,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:23:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 852 transitions. [2021-03-10 22:23:52,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:23:52,252 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:52,252 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:23:52,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3598,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:23:52,467 INFO L428 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:23:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1664611458, now seen corresponding path program 23 times [2021-03-10 22:23:52,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:52,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712362161] [2021-03-10 22:23:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:52,658 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-03-10 22:23:52,838 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-03-10 22:23:52,988 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-03-10 22:23:53,348 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2021-03-10 22:23:53,493 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 22:23:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:53,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712362161] [2021-03-10 22:23:53,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262843961] [2021-03-10 22:23:53,566 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 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 [2021-03-10 22:23:53,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:23:53,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:23:53,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:23:53,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:23:54,316 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-03-10 22:23:54,434 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 23 treesize of output 17 [2021-03-10 22:23:54,438 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,450 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 23 treesize of output 17 [2021-03-10 22:23:54,454 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,463 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 31 treesize of output 23 [2021-03-10 22:23:54,467 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,476 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 38 treesize of output 28 [2021-03-10 22:23:54,481 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,490 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 31 treesize of output 23 [2021-03-10 22:23:54,495 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,503 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 23 treesize of output 17 [2021-03-10 22:23:54,508 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,518 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 29 treesize of output 21 [2021-03-10 22:23:54,521 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,531 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 30 treesize of output 22 [2021-03-10 22:23:54,535 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,544 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 22 treesize of output 16 [2021-03-10 22:23:54,548 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,557 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 22 treesize of output 16 [2021-03-10 22:23:54,561 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,571 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 37 treesize of output 27 [2021-03-10 22:23:54,574 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,584 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 29 treesize of output 21 [2021-03-10 22:23:54,587 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,596 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 30 treesize of output 22 [2021-03-10 22:23:54,600 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,607 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:23:54,610 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,619 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 22 treesize of output 16 [2021-03-10 22:23:54,622 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,631 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 23 treesize of output 17 [2021-03-10 22:23:54,634 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,642 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 30 treesize of output 22 [2021-03-10 22:23:54,645 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,654 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 31 treesize of output 23 [2021-03-10 22:23:54,658 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,667 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 23 treesize of output 17 [2021-03-10 22:23:54,670 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,678 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 30 treesize of output 22 [2021-03-10 22:23:54,681 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,689 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 24 treesize of output 18 [2021-03-10 22:23:54,693 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,702 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 23 treesize of output 17 [2021-03-10 22:23:54,705 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,713 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 30 treesize of output 22 [2021-03-10 22:23:54,716 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:54,724 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 22 treesize of output 16 [2021-03-10 22:23:54,727 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-03-10 22:23:55,342 WARN L205 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2021-03-10 22:23:55,343 INFO L628 ElimStorePlain]: treesize reduction 255, result has 43.8 percent of original size [2021-03-10 22:23:55,346 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:23:55,346 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 1 variables, input treesize:1039, output treesize:199 [2021-03-10 22:23:55,710 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 22:23:56,112 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 22:23:56,611 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2021-03-10 22:23:57,136 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-03-10 22:23:57,357 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-03-10 22:23:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:57,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:23:57,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-03-10 22:23:57,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355351920] [2021-03-10 22:23:57,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-03-10 22:23:57,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:57,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-03-10 22:23:57,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-03-10 22:23:57,402 INFO L87 Difference]: Start difference. First operand 295 states and 852 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-03-10 22:23:57,788 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2021-03-10 22:23:58,186 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2021-03-10 22:23:58,788 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2021-03-10 22:24:00,649 WARN L205 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-03-10 22:24:02,635 WARN L205 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2021-03-10 22:24:05,247 WARN L205 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 107 DAG size of output: 89 [2021-03-10 22:24:07,933 WARN L205 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2021-03-10 22:24:11,060 WARN L205 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2021-03-10 22:24:13,539 WARN L205 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2021-03-10 22:24:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:13,630 INFO L93 Difference]: Finished difference Result 542 states and 1507 transitions. [2021-03-10 22:24:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 22:24:13,633 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 20 [2021-03-10 22:24:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:13,634 INFO L225 Difference]: With dead ends: 542 [2021-03-10 22:24:13,634 INFO L226 Difference]: Without dead ends: 491 [2021-03-10 22:24:13,634 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 18467.0ms TimeCoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2021-03-10 22:24:13,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-03-10 22:24:13,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 287. [2021-03-10 22:24:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.895104895104895) internal successors, (828), 286 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 828 transitions. [2021-03-10 22:24:13,638 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 828 transitions. Word has length 20 [2021-03-10 22:24:13,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:13,638 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 828 transitions. [2021-03-10 22:24:13,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-03-10 22:24:13,638 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 828 transitions. [2021-03-10 22:24:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:24:13,639 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:13,639 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:24:13,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3759,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:24:13,839 INFO L428 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:24:13,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:13,839 INFO L82 PathProgramCache]: Analyzing trace with hash -678810648, now seen corresponding path program 24 times [2021-03-10 22:24:13,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:13,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711059710] [2021-03-10 22:24:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:14,009 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2021-03-10 22:24:14,155 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-03-10 22:24:14,589 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-03-10 22:24:14,777 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-03-10 22:24:14,982 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-10 22:24:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:24:15,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711059710] [2021-03-10 22:24:15,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221701698] [2021-03-10 22:24:15,120 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 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 [2021-03-10 22:24:15,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 22:24:15,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:24:15,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:24:15,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:24:15,411 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 22:24:15,717 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 22:24:16,273 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2021-03-10 22:24:16,665 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 22:24:17,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:17,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:17,694 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:24:17,698 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:17,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:17,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:17,713 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:24:17,717 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:17,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:17,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:17,732 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:24:17,735 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:17,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:17,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:17,750 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:24:17,754 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:17,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:17,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:17,769 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:24:17,774 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:17,783 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:24:17,787 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:19,249 WARN L205 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2021-03-10 22:24:19,250 INFO L628 ElimStorePlain]: treesize reduction 558, result has 43.2 percent of original size [2021-03-10 22:24:19,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:19,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:19,263 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:24:19,267 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:19,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:19,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:19,280 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:24:19,283 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:19,292 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 12 [2021-03-10 22:24:19,296 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:20,483 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-03-10 22:24:20,484 INFO L628 ElimStorePlain]: treesize reduction 33, result has 91.5 percent of original size [2021-03-10 22:24:20,494 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 7 treesize of output 5 [2021-03-10 22:24:20,499 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:20,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:20,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:20,513 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:24:20,517 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:20,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:20,528 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:24:20,532 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:21,093 WARN L205 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 22:24:21,094 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:24:21,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:21,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:21,108 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:24:21,112 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:21,123 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 7 treesize of output 5 [2021-03-10 22:24:21,127 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:21,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:21,138 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:24:21,142 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:21,704 WARN L205 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-03-10 22:24:21,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:24:21,725 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-03-10 22:24:21,726 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1129, output treesize:286 [2021-03-10 22:24:22,699 WARN L205 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-03-10 22:24:23,705 WARN L205 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-03-10 22:24:24,432 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_507, v_prenex_509, array_6], 1=[v_prenex_506, array_3, v_prenex_508]} [2021-03-10 22:24:24,443 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 29 treesize of output 21 [2021-03-10 22:24:24,447 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:24,458 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 23 treesize of output 17 [2021-03-10 22:24:24,461 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:24,473 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 22 treesize of output 16 [2021-03-10 22:24:24,476 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:24,487 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 23 treesize of output 17 [2021-03-10 22:24:24,492 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:24,506 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 30 treesize of output 22 [2021-03-10 22:24:24,511 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:24,522 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 22 treesize of output 16 [2021-03-10 22:24:24,526 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:25,382 WARN L205 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2021-03-10 22:24:25,383 INFO L628 ElimStorePlain]: treesize reduction 678, result has 20.6 percent of original size [2021-03-10 22:24:25,391 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 15 treesize of output 11 [2021-03-10 22:24:25,395 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:25,954 WARN L205 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-03-10 22:24:25,955 INFO L628 ElimStorePlain]: treesize reduction 7, result has 95.9 percent of original size [2021-03-10 22:24:25,964 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 7 treesize of output 5 [2021-03-10 22:24:25,968 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:26,260 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 22:24:26,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:24:26,261 INFO L518 ElimStorePlain]: Eliminatee v_prenex_506 vanished before elimination [2021-03-10 22:24:26,262 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-03-10 22:24:26,262 INFO L518 ElimStorePlain]: Eliminatee v_prenex_508 vanished before elimination [2021-03-10 22:24:26,265 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 6 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-03-10 22:24:26,265 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:1020, output treesize:131 [2021-03-10 22:24:26,784 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-03-10 22:24:27,048 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 22:24:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:24:27,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:24:27,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:24:27,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063331898] [2021-03-10 22:24:27,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:24:27,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:27,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:24:27,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:24:27,088 INFO L87 Difference]: Start difference. First operand 287 states and 828 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:24:27,474 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-03-10 22:24:28,159 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-03-10 22:24:29,970 WARN L205 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2021-03-10 22:24:32,178 WARN L205 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 125 DAG size of output: 103 [2021-03-10 22:24:36,267 WARN L205 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 170 DAG size of output: 153 [2021-03-10 22:24:41,301 WARN L205 SmtUtils]: Spent 4.52 s on a formula simplification. DAG size of input: 179 DAG size of output: 157 [2021-03-10 22:24:44,844 WARN L205 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 150 DAG size of output: 138 [2021-03-10 22:24:45,907 WARN L205 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2021-03-10 22:24:47,200 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-03-10 22:24:48,511 WARN L205 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2021-03-10 22:24:50,129 WARN L205 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2021-03-10 22:24:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:50,365 INFO L93 Difference]: Finished difference Result 504 states and 1423 transitions. [2021-03-10 22:24:50,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:24:50,369 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:24:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:50,370 INFO L225 Difference]: With dead ends: 504 [2021-03-10 22:24:50,370 INFO L226 Difference]: Without dead ends: 474 [2021-03-10 22:24:50,370 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 25628.2ms TimeCoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2021-03-10 22:24:50,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-03-10 22:24:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 293. [2021-03-10 22:24:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 2.9006849315068495) internal successors, (847), 292 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 847 transitions. [2021-03-10 22:24:50,374 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 847 transitions. Word has length 20 [2021-03-10 22:24:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:50,374 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 847 transitions. [2021-03-10 22:24:50,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:24:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 847 transitions. [2021-03-10 22:24:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:24:50,374 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:50,374 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:24:50,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3789 [2021-03-10 22:24:50,575 INFO L428 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:24:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:50,575 INFO L82 PathProgramCache]: Analyzing trace with hash -199525972, now seen corresponding path program 25 times [2021-03-10 22:24:50,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:50,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190373659] [2021-03-10 22:24:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:24:51,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190373659] [2021-03-10 22:24:51,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416703907] [2021-03-10 22:24:51,255 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 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 [2021-03-10 22:24:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:51,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:24:51,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:24:51,631 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-03-10 22:24:51,968 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 22:24:52,599 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 63 [2021-03-10 22:24:53,085 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 22:24:54,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:54,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:54,885 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:24:54,890 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:54,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:54,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:54,912 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:24:54,916 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:54,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:54,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:54,937 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:24:54,942 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:54,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:54,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:54,963 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:24:54,967 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:54,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:54,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:54,986 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:24:54,990 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:55,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:55,005 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:24:55,009 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:56,989 WARN L205 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2021-03-10 22:24:56,990 INFO L628 ElimStorePlain]: treesize reduction 602, result has 44.9 percent of original size [2021-03-10 22:24:57,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:57,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:57,006 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:24:57,011 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:57,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:57,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:57,027 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:24:57,031 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:57,041 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:24:57,045 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:57,830 WARN L205 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-03-10 22:24:57,832 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:24:57,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:57,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:57,847 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:24:57,852 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:57,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:57,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:57,868 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:24:57,872 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:57,884 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 7 treesize of output 5 [2021-03-10 22:24:57,889 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:59,324 WARN L205 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-03-10 22:24:59,326 INFO L628 ElimStorePlain]: treesize reduction 34, result has 91.5 percent of original size [2021-03-10 22:24:59,337 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 7 treesize of output 5 [2021-03-10 22:24:59,342 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:59,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:59,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:59,357 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:24:59,362 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:24:59,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:24:59,375 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:24:59,380 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:00,035 WARN L205 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 22:25:00,036 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:25:00,054 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-03-10 22:25:00,054 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:321 [2021-03-10 22:25:01,061 WARN L205 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2021-03-10 22:25:02,413 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_525, v_prenex_527, v_prenex_529, array_6, v_prenex_531], 1=[v_prenex_526, v_prenex_528, array_3, v_prenex_530, v_prenex_524]} [2021-03-10 22:25:02,430 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 23 treesize of output 17 [2021-03-10 22:25:02,435 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:02,451 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 22 treesize of output 16 [2021-03-10 22:25:02,455 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:02,470 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 22 treesize of output 16 [2021-03-10 22:25:02,474 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:02,490 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 23 treesize of output 17 [2021-03-10 22:25:02,495 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:02,516 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 30 treesize of output 22 [2021-03-10 22:25:02,522 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:02,542 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 29 treesize of output 21 [2021-03-10 22:25:02,546 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:04,499 WARN L205 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 142 DAG size of output: 89 [2021-03-10 22:25:04,500 INFO L628 ElimStorePlain]: treesize reduction 1283, result has 20.4 percent of original size [2021-03-10 22:25:04,514 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 7 treesize of output 5 [2021-03-10 22:25:04,520 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:05,225 WARN L205 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-03-10 22:25:05,226 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:25:05,237 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 12 [2021-03-10 22:25:05,243 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:05,850 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-10 22:25:05,851 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:25:05,863 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 7 treesize of output 5 [2021-03-10 22:25:05,869 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:06,594 WARN L205 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-03-10 22:25:06,595 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:25:06,609 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 15 treesize of output 11 [2021-03-10 22:25:06,615 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:06,626 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 7 treesize of output 5 [2021-03-10 22:25:06,631 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:07,810 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2021-03-10 22:25:07,811 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-03-10 22:25:07,812 INFO L518 ElimStorePlain]: Eliminatee v_prenex_526 vanished before elimination [2021-03-10 22:25:07,812 INFO L518 ElimStorePlain]: Eliminatee v_prenex_528 vanished before elimination [2021-03-10 22:25:07,812 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-03-10 22:25:07,812 INFO L518 ElimStorePlain]: Eliminatee v_prenex_530 vanished before elimination [2021-03-10 22:25:07,812 INFO L518 ElimStorePlain]: Eliminatee v_prenex_524 vanished before elimination [2021-03-10 22:25:07,816 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 12 xjuncts. [2021-03-10 22:25:07,816 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 15 variables, input treesize:1771, output treesize:238 [2021-03-10 22:25:08,588 WARN L205 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-03-10 22:25:09,427 WARN L205 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-03-10 22:25:09,735 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:25:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:25:09,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:25:09,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:25:09,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915300303] [2021-03-10 22:25:09,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:25:09,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:25:09,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:25:09,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:25:09,783 INFO L87 Difference]: Start difference. First operand 293 states and 847 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:25:10,178 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-03-10 22:25:10,927 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-03-10 22:25:12,625 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 112 DAG size of output: 107 [2021-03-10 22:25:14,796 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2021-03-10 22:25:18,858 WARN L205 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2021-03-10 22:25:22,220 WARN L205 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 164 DAG size of output: 157 [2021-03-10 22:25:23,799 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-03-10 22:25:25,150 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-03-10 22:25:26,788 WARN L205 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2021-03-10 22:25:28,352 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2021-03-10 22:25:29,777 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-03-10 22:25:31,733 WARN L205 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2021-03-10 22:25:32,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:25:32,018 INFO L93 Difference]: Finished difference Result 567 states and 1559 transitions. [2021-03-10 22:25:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 22:25:32,022 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:25:32,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:25:32,023 INFO L225 Difference]: With dead ends: 567 [2021-03-10 22:25:32,023 INFO L226 Difference]: Without dead ends: 537 [2021-03-10 22:25:32,024 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 24082.3ms TimeCoverageRelationStatistics Valid=163, Invalid=767, Unknown=0, NotChecked=0, Total=930 [2021-03-10 22:25:32,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-10 22:25:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 296. [2021-03-10 22:25:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 2.91864406779661) internal successors, (861), 295 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:32,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 861 transitions. [2021-03-10 22:25:32,028 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 861 transitions. Word has length 20 [2021-03-10 22:25:32,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:25:32,028 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 861 transitions. [2021-03-10 22:25:32,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:25:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 861 transitions. [2021-03-10 22:25:32,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:25:32,028 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:25:32,028 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:25:32,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3911,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:25:32,229 INFO L428 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:25:32,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:25:32,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1898246360, now seen corresponding path program 26 times [2021-03-10 22:25:32,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:25:32,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773999020] [2021-03-10 22:25:32,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:25:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:25:32,903 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 22:25:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:25:33,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773999020] [2021-03-10 22:25:33,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454226534] [2021-03-10 22:25:33,182 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 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 [2021-03-10 22:25:33,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:25:33,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:25:33,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:25:33,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:25:33,588 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-03-10 22:25:33,958 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 22:25:34,613 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 63 [2021-03-10 22:25:35,079 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 22:25:36,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:36,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:36,885 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-03-10 22:25:36,890 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:36,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:36,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:36,908 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:25:36,914 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:36,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:36,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:36,934 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:25:36,938 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:36,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:36,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:36,958 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:25:36,963 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:36,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:36,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:36,983 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:25:36,987 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:37,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:37,003 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:25:37,009 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:39,069 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2021-03-10 22:25:39,070 INFO L628 ElimStorePlain]: treesize reduction 606, result has 42.5 percent of original size [2021-03-10 22:25:39,083 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 7 treesize of output 5 [2021-03-10 22:25:39,088 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:39,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:39,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:39,104 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:25:39,109 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:39,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:39,122 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:25:39,127 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:40,023 WARN L205 SmtUtils]: Spent 896.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 22:25:40,025 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:25:40,037 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 7 treesize of output 5 [2021-03-10 22:25:40,044 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:40,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:40,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:40,061 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:25:40,066 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:40,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:40,080 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:25:40,084 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:40,989 WARN L205 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-03-10 22:25:40,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:25:41,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:41,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:41,009 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:25:41,014 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:41,027 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 7 treesize of output 5 [2021-03-10 22:25:41,033 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:41,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:25:41,047 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:25:41,053 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:42,756 WARN L205 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-03-10 22:25:42,758 INFO L628 ElimStorePlain]: treesize reduction 27, result has 92.7 percent of original size [2021-03-10 22:25:42,779 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-03-10 22:25:42,779 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:321 [2021-03-10 22:25:43,898 WARN L205 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2021-03-10 22:25:44,593 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_547, v_prenex_559, v_prenex_549, v_prenex_561, v_prenex_551, array_6, v_prenex_553, v_prenex_555, v_prenex_567, v_prenex_557], 1=[v_prenex_558, v_prenex_548, array_3, v_prenex_560, v_prenex_550, v_prenex_562, v_prenex_552, v_prenex_554, v_prenex_556, v_prenex_546]} [2021-03-10 22:25:44,612 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 15 treesize of output 11 [2021-03-10 22:25:44,617 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:46,353 WARN L205 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 200 DAG size of output: 85 [2021-03-10 22:25:46,355 INFO L628 ElimStorePlain]: treesize reduction 896, result has 24.0 percent of original size [2021-03-10 22:25:46,355 INFO L518 ElimStorePlain]: Eliminatee v_prenex_559 vanished before elimination [2021-03-10 22:25:46,355 INFO L518 ElimStorePlain]: Eliminatee v_prenex_549 vanished before elimination [2021-03-10 22:25:46,367 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 16 treesize of output 12 [2021-03-10 22:25:46,373 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:46,969 WARN L205 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-03-10 22:25:46,971 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:25:46,971 INFO L518 ElimStorePlain]: Eliminatee v_prenex_551 vanished before elimination [2021-03-10 22:25:46,971 INFO L518 ElimStorePlain]: Eliminatee array_6 vanished before elimination [2021-03-10 22:25:46,985 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 7 treesize of output 5 [2021-03-10 22:25:46,992 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:47,623 WARN L205 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 22:25:47,624 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:25:47,624 INFO L518 ElimStorePlain]: Eliminatee v_prenex_555 vanished before elimination [2021-03-10 22:25:47,637 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 7 treesize of output 5 [2021-03-10 22:25:47,642 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:48,183 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 22:25:48,184 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:25:48,194 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 7 treesize of output 5 [2021-03-10 22:25:48,199 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:25:48,735 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 22:25:48,736 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:25:48,736 INFO L518 ElimStorePlain]: Eliminatee v_prenex_558 vanished before elimination [2021-03-10 22:25:48,736 INFO L518 ElimStorePlain]: Eliminatee v_prenex_548 vanished before elimination [2021-03-10 22:25:48,737 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-03-10 22:25:48,737 INFO L518 ElimStorePlain]: Eliminatee v_prenex_560 vanished before elimination [2021-03-10 22:25:48,737 INFO L518 ElimStorePlain]: Eliminatee v_prenex_550 vanished before elimination [2021-03-10 22:25:48,737 INFO L518 ElimStorePlain]: Eliminatee v_prenex_562 vanished before elimination [2021-03-10 22:25:48,737 INFO L518 ElimStorePlain]: Eliminatee v_prenex_552 vanished before elimination [2021-03-10 22:25:48,737 INFO L518 ElimStorePlain]: Eliminatee v_prenex_554 vanished before elimination [2021-03-10 22:25:48,737 INFO L518 ElimStorePlain]: Eliminatee v_prenex_556 vanished before elimination [2021-03-10 22:25:48,737 INFO L518 ElimStorePlain]: Eliminatee v_prenex_546 vanished before elimination [2021-03-10 22:25:48,741 INFO L550 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 20 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-03-10 22:25:48,742 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 30 variables, input treesize:1186, output treesize:216 [2021-03-10 22:25:49,643 WARN L205 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-03-10 22:25:50,327 WARN L205 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-03-10 22:25:50,617 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-03-10 22:25:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:25:50,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:25:50,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:25:50,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344058448] [2021-03-10 22:25:50,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:25:50,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:25:50,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:25:50,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:25:50,674 INFO L87 Difference]: Start difference. First operand 296 states and 861 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:25:51,038 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2021-03-10 22:25:51,794 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-03-10 22:25:53,099 WARN L205 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2021-03-10 22:25:54,833 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 122 DAG size of output: 104 [2021-03-10 22:25:58,014 WARN L205 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 164 DAG size of output: 152 [2021-03-10 22:26:00,003 WARN L205 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2021-03-10 22:26:02,511 WARN L205 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2021-03-10 22:26:02,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:26:02,712 INFO L93 Difference]: Finished difference Result 474 states and 1350 transitions. [2021-03-10 22:26:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:26:02,716 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:26:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:26:02,717 INFO L225 Difference]: With dead ends: 474 [2021-03-10 22:26:02,717 INFO L226 Difference]: Without dead ends: 452 [2021-03-10 22:26:02,717 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 14952.2ms TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:26:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-03-10 22:26:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 290. [2021-03-10 22:26:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.8927335640138407) internal successors, (836), 289 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 836 transitions. [2021-03-10 22:26:02,720 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 836 transitions. Word has length 20 [2021-03-10 22:26:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:26:02,720 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 836 transitions. [2021-03-10 22:26:02,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:26:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 836 transitions. [2021-03-10 22:26:02,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:26:02,721 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:26:02,721 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:26:02,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4096 [2021-03-10 22:26:02,921 INFO L428 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:26:02,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:26:02,921 INFO L82 PathProgramCache]: Analyzing trace with hash 335703830, now seen corresponding path program 27 times [2021-03-10 22:26:02,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:26:02,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284238157] [2021-03-10 22:26:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:26:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:26:03,557 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 22:26:03,719 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-10 22:26:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:26:03,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284238157] [2021-03-10 22:26:03,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193235898] [2021-03-10 22:26:03,951 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 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 [2021-03-10 22:26:03,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 22:26:03,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:26:03,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:26:03,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:26:04,336 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 22:26:04,678 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 22:26:05,023 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-03-10 22:26:05,618 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 22:26:06,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:06,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:06,921 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:26:06,926 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:06,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:06,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:06,943 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:26:06,947 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:06,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:06,962 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:26:06,966 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:08,692 WARN L205 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 136 DAG size of output: 124 [2021-03-10 22:26:08,693 INFO L628 ElimStorePlain]: treesize reduction 253, result has 65.1 percent of original size [2021-03-10 22:26:08,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:08,707 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:26:08,712 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:09,543 WARN L205 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-03-10 22:26:09,544 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:09,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:09,559 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:26:09,563 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:10,380 WARN L205 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-03-10 22:26:10,381 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:10,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:10,396 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:26:10,400 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:11,199 WARN L205 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-03-10 22:26:11,200 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:11,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:11,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:11,215 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:26:11,220 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:11,229 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:26:11,233 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:11,930 WARN L205 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-03-10 22:26:11,932 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:11,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:11,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:11,950 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:26:11,955 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:11,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:11,970 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:26:11,976 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:12,775 WARN L205 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-03-10 22:26:12,777 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:12,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:12,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:12,796 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-03-10 22:26:12,802 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:12,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:12,818 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:26:12,823 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:13,569 WARN L205 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-03-10 22:26:13,570 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:13,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:13,585 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:26:13,590 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:14,325 WARN L205 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-10 22:26:14,326 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:14,353 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-03-10 22:26:14,353 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 16 variables, input treesize:753, output treesize:328 [2021-03-10 22:26:15,309 WARN L205 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 94 [2021-03-10 22:26:16,242 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_590, v_prenex_592, v_prenex_594, array_6], 1=[array_0, v_prenex_591, v_prenex_593, v_prenex_589]} [2021-03-10 22:26:16,256 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 15 treesize of output 11 [2021-03-10 22:26:16,262 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:16,276 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 22 treesize of output 16 [2021-03-10 22:26:16,281 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:16,299 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 29 treesize of output 21 [2021-03-10 22:26:16,303 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:16,316 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 22 treesize of output 16 [2021-03-10 22:26:16,321 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:16,334 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 15 treesize of output 11 [2021-03-10 22:26:16,338 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:16,351 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 22 treesize of output 16 [2021-03-10 22:26:16,355 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:17,606 WARN L205 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-03-10 22:26:17,607 INFO L628 ElimStorePlain]: treesize reduction 834, result has 22.4 percent of original size [2021-03-10 22:26:17,617 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 7 treesize of output 5 [2021-03-10 22:26:17,622 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:18,086 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 22:26:18,087 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:18,097 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 8 treesize of output 6 [2021-03-10 22:26:18,103 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:18,114 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 7 treesize of output 5 [2021-03-10 22:26:18,119 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:18,890 WARN L205 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-03-10 22:26:18,891 INFO L628 ElimStorePlain]: treesize reduction 30, result has 86.3 percent of original size [2021-03-10 22:26:18,901 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 15 treesize of output 11 [2021-03-10 22:26:18,907 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:19,270 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 22:26:19,271 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:19,271 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:26:19,272 INFO L518 ElimStorePlain]: Eliminatee v_prenex_591 vanished before elimination [2021-03-10 22:26:19,272 INFO L518 ElimStorePlain]: Eliminatee v_prenex_593 vanished before elimination [2021-03-10 22:26:19,272 INFO L518 ElimStorePlain]: Eliminatee v_prenex_589 vanished before elimination [2021-03-10 22:26:19,276 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:26:19,276 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1193, output treesize:143 [2021-03-10 22:26:20,017 WARN L205 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-03-10 22:26:20,682 WARN L205 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-03-10 22:26:20,982 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 22:26:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:26:21,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:26:21,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:26:21,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216817651] [2021-03-10 22:26:21,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:26:21,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:26:21,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:26:21,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:26:21,025 INFO L87 Difference]: Start difference. First operand 290 states and 836 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:26:21,402 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-03-10 22:26:22,100 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-03-10 22:26:23,568 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2021-03-10 22:26:25,884 WARN L205 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2021-03-10 22:26:27,939 WARN L205 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 151 DAG size of output: 143 [2021-03-10 22:26:29,422 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2021-03-10 22:26:31,273 WARN L205 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2021-03-10 22:26:32,566 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2021-03-10 22:26:34,117 WARN L205 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2021-03-10 22:26:35,880 WARN L205 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2021-03-10 22:26:37,200 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-03-10 22:26:37,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:26:37,372 INFO L93 Difference]: Finished difference Result 563 states and 1557 transitions. [2021-03-10 22:26:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:26:37,377 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:26:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:26:37,378 INFO L225 Difference]: With dead ends: 563 [2021-03-10 22:26:37,378 INFO L226 Difference]: Without dead ends: 533 [2021-03-10 22:26:37,378 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 18714.7ms TimeCoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2021-03-10 22:26:37,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-10 22:26:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 296. [2021-03-10 22:26:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 2.91864406779661) internal successors, (861), 295 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 861 transitions. [2021-03-10 22:26:37,383 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 861 transitions. Word has length 20 [2021-03-10 22:26:37,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:26:37,384 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 861 transitions. [2021-03-10 22:26:37,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:26:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 861 transitions. [2021-03-10 22:26:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:26:37,384 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:26:37,384 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:26:37,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4252 [2021-03-10 22:26:37,599 INFO L428 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:26:37,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:26:37,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1363016558, now seen corresponding path program 28 times [2021-03-10 22:26:37,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:26:37,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499883948] [2021-03-10 22:26:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:26:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:26:37,903 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-10 22:26:38,309 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 22:26:38,561 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-03-10 22:26:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:26:38,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499883948] [2021-03-10 22:26:38,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457654912] [2021-03-10 22:26:38,744 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 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 [2021-03-10 22:26:38,769 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 22:26:38,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:26:38,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:26:38,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:26:39,162 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-03-10 22:26:39,525 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 22:26:39,891 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 22:26:40,513 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 22:26:41,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:41,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:41,921 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:26:41,926 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:41,937 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:26:41,941 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:41,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:41,956 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:26:41,962 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:43,958 WARN L205 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 136 DAG size of output: 127 [2021-03-10 22:26:43,960 INFO L628 ElimStorePlain]: treesize reduction 214, result has 68.5 percent of original size [2021-03-10 22:26:43,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:43,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:43,980 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-03-10 22:26:43,986 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:44,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:44,003 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:26:44,009 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:44,962 WARN L205 SmtUtils]: Spent 953.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-03-10 22:26:44,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:44,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:44,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:44,984 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:26:44,988 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:45,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:45,004 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:26:45,009 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:45,822 WARN L205 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-03-10 22:26:45,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:45,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:45,839 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:26:45,843 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:46,630 WARN L205 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-03-10 22:26:46,631 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:46,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:46,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:46,649 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:26:46,654 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:46,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:46,670 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:26:46,674 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:47,457 WARN L205 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-03-10 22:26:47,458 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:47,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:47,483 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:26:47,488 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:48,238 WARN L205 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-03-10 22:26:48,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:48,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:48,254 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:26:48,258 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:48,990 WARN L205 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-03-10 22:26:48,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:49,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:26:49,005 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:26:49,009 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:49,786 WARN L205 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-03-10 22:26:49,787 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:49,813 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-03-10 22:26:49,814 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 16 variables, input treesize:801, output treesize:361 [2021-03-10 22:26:50,837 WARN L205 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 102 [2021-03-10 22:26:51,899 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_624, v_prenex_626, v_prenex_616, v_prenex_618, array_6, v_prenex_620, v_prenex_622], 1=[v_prenex_625, v_prenex_615, array_0, v_prenex_617, v_prenex_619, v_prenex_621, v_prenex_623]} [2021-03-10 22:26:51,919 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 22 treesize of output 16 [2021-03-10 22:26:51,923 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:51,940 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 22 treesize of output 16 [2021-03-10 22:26:51,945 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:51,968 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 29 treesize of output 21 [2021-03-10 22:26:51,972 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:51,990 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 22 treesize of output 16 [2021-03-10 22:26:51,994 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:52,012 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 15 treesize of output 11 [2021-03-10 22:26:52,017 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:52,036 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 15 treesize of output 11 [2021-03-10 22:26:52,042 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:54,038 WARN L205 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 172 DAG size of output: 108 [2021-03-10 22:26:54,039 INFO L628 ElimStorePlain]: treesize reduction 1607, result has 16.6 percent of original size [2021-03-10 22:26:54,053 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 7 treesize of output 5 [2021-03-10 22:26:54,058 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:54,711 WARN L205 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-03-10 22:26:54,712 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:54,724 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 12 [2021-03-10 22:26:54,730 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:55,351 WARN L205 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-03-10 22:26:55,352 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:55,365 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 9 treesize of output 7 [2021-03-10 22:26:55,371 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:55,998 WARN L205 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-03-10 22:26:56,000 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:56,012 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 15 treesize of output 11 [2021-03-10 22:26:56,018 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:56,625 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-03-10 22:26:56,626 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:56,638 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 7 treesize of output 5 [2021-03-10 22:26:56,644 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:56,653 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:26:56,657 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:57,149 WARN L205 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-03-10 22:26:57,151 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:57,163 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 7 treesize of output 5 [2021-03-10 22:26:57,168 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:26:57,655 WARN L205 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-03-10 22:26:57,657 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:26:57,657 INFO L518 ElimStorePlain]: Eliminatee v_prenex_625 vanished before elimination [2021-03-10 22:26:57,657 INFO L518 ElimStorePlain]: Eliminatee v_prenex_615 vanished before elimination [2021-03-10 22:26:57,657 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:26:57,657 INFO L518 ElimStorePlain]: Eliminatee v_prenex_617 vanished before elimination [2021-03-10 22:26:57,657 INFO L518 ElimStorePlain]: Eliminatee v_prenex_619 vanished before elimination [2021-03-10 22:26:57,657 INFO L518 ElimStorePlain]: Eliminatee v_prenex_621 vanished before elimination [2021-03-10 22:26:57,657 INFO L518 ElimStorePlain]: Eliminatee v_prenex_623 vanished before elimination [2021-03-10 22:26:57,662 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:26:57,662 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 21 variables, input treesize:2043, output treesize:175 [2021-03-10 22:26:58,498 WARN L205 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-03-10 22:26:59,177 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-03-10 22:26:59,480 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-03-10 22:26:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:26:59,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:26:59,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:26:59,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615349326] [2021-03-10 22:26:59,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:26:59,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:26:59,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:26:59,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:26:59,535 INFO L87 Difference]: Start difference. First operand 296 states and 861 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:26:59,926 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-03-10 22:27:00,698 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-03-10 22:27:02,314 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2021-03-10 22:27:04,952 WARN L205 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2021-03-10 22:27:07,300 WARN L205 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 157 DAG size of output: 146 [2021-03-10 22:27:08,960 WARN L205 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2021-03-10 22:27:11,514 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2021-03-10 22:27:11,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:27:11,731 INFO L93 Difference]: Finished difference Result 508 states and 1424 transitions. [2021-03-10 22:27:11,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:27:11,735 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:27:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:27:11,736 INFO L225 Difference]: With dead ends: 508 [2021-03-10 22:27:11,736 INFO L226 Difference]: Without dead ends: 486 [2021-03-10 22:27:11,736 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 14982.0ms TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:27:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-03-10 22:27:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 293. [2021-03-10 22:27:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 2.9006849315068495) internal successors, (847), 292 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:11,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 847 transitions. [2021-03-10 22:27:11,740 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 847 transitions. Word has length 20 [2021-03-10 22:27:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:27:11,740 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 847 transitions. [2021-03-10 22:27:11,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:27:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 847 transitions. [2021-03-10 22:27:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:27:11,740 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:27:11,740 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:27:11,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4383,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:27:11,941 INFO L428 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:27:11,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:27:11,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1536264250, now seen corresponding path program 29 times [2021-03-10 22:27:11,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:27:11,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309175761] [2021-03-10 22:27:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:27:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:27:12,319 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-03-10 22:27:12,534 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-03-10 22:27:12,742 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-03-10 22:27:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:27:13,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309175761] [2021-03-10 22:27:13,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291378112] [2021-03-10 22:27:13,113 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 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 [2021-03-10 22:27:13,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:27:13,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:27:13,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:27:13,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:27:13,433 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-10 22:27:13,653 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 22:27:14,146 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-03-10 22:27:14,362 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 22:27:14,481 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 31 treesize of output 23 [2021-03-10 22:27:14,486 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,496 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 23 treesize of output 17 [2021-03-10 22:27:14,499 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,510 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 31 treesize of output 23 [2021-03-10 22:27:14,516 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,527 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 23 treesize of output 17 [2021-03-10 22:27:14,532 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,543 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 30 treesize of output 22 [2021-03-10 22:27:14,547 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,558 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 22 treesize of output 16 [2021-03-10 22:27:14,563 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,574 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 23 treesize of output 17 [2021-03-10 22:27:14,578 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,589 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 31 treesize of output 23 [2021-03-10 22:27:14,593 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,602 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:27:14,606 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,617 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 30 treesize of output 22 [2021-03-10 22:27:14,621 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,632 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 22 treesize of output 16 [2021-03-10 22:27:14,636 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,647 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 23 treesize of output 17 [2021-03-10 22:27:14,652 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,663 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 30 treesize of output 22 [2021-03-10 22:27:14,667 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,678 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 29 treesize of output 21 [2021-03-10 22:27:14,683 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,694 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 37 treesize of output 27 [2021-03-10 22:27:14,699 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,710 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 23 treesize of output 17 [2021-03-10 22:27:14,714 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,726 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 30 treesize of output 22 [2021-03-10 22:27:14,730 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,741 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 24 treesize of output 18 [2021-03-10 22:27:14,747 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,759 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 22 treesize of output 16 [2021-03-10 22:27:14,763 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,775 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 22 treesize of output 16 [2021-03-10 22:27:14,779 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,791 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 30 treesize of output 22 [2021-03-10 22:27:14,795 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,807 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 29 treesize of output 21 [2021-03-10 22:27:14,812 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,821 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:27:14,826 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:14,837 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 38 treesize of output 28 [2021-03-10 22:27:14,843 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:15,799 WARN L205 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-03-10 22:27:15,800 INFO L628 ElimStorePlain]: treesize reduction 240, result has 48.5 percent of original size [2021-03-10 22:27:15,804 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:27:15,804 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 1 variables, input treesize:1111, output treesize:226 [2021-03-10 22:27:16,356 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-10 22:27:17,139 WARN L205 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-03-10 22:27:17,582 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-10 22:27:17,878 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-03-10 22:27:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:27:17,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:27:17,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-03-10 22:27:17,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513235268] [2021-03-10 22:27:17,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-03-10 22:27:17,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:27:17,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-03-10 22:27:17,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-03-10 22:27:17,934 INFO L87 Difference]: Start difference. First operand 293 states and 847 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-03-10 22:27:18,348 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2021-03-10 22:27:18,941 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2021-03-10 22:27:20,186 WARN L205 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2021-03-10 22:27:21,723 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2021-03-10 22:27:23,622 WARN L205 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-03-10 22:27:25,934 WARN L205 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2021-03-10 22:27:27,156 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-03-10 22:27:28,547 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2021-03-10 22:27:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:27:28,672 INFO L93 Difference]: Finished difference Result 497 states and 1395 transitions. [2021-03-10 22:27:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:27:28,676 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 20 [2021-03-10 22:27:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:27:28,677 INFO L225 Difference]: With dead ends: 497 [2021-03-10 22:27:28,677 INFO L226 Difference]: Without dead ends: 446 [2021-03-10 22:27:28,677 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 13063.9ms TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2021-03-10 22:27:28,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-03-10 22:27:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 287. [2021-03-10 22:27:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.895104895104895) internal successors, (828), 286 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 828 transitions. [2021-03-10 22:27:28,680 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 828 transitions. Word has length 20 [2021-03-10 22:27:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:27:28,681 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 828 transitions. [2021-03-10 22:27:28,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-03-10 22:27:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 828 transitions. [2021-03-10 22:27:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:27:28,681 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:27:28,681 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:27:28,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4508 [2021-03-10 22:27:28,881 INFO L428 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:27:28,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:27:28,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1281321126, now seen corresponding path program 30 times [2021-03-10 22:27:28,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:27:28,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447248888] [2021-03-10 22:27:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:27:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:27:29,364 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-03-10 22:27:29,570 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-03-10 22:27:29,717 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24 [2021-03-10 22:27:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:27:30,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447248888] [2021-03-10 22:27:30,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454436128] [2021-03-10 22:27:30,025 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 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 [2021-03-10 22:27:30,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 22:27:30,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:27:30,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:27:30,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:27:30,470 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 22:27:30,857 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 22:27:32,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:32,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:32,526 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:27:32,532 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:32,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:32,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:32,551 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:27:32,558 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:32,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:32,574 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-03-10 22:27:32,581 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:33,950 WARN L205 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2021-03-10 22:27:33,952 INFO L628 ElimStorePlain]: treesize reduction 162, result has 64.1 percent of original size [2021-03-10 22:27:33,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:33,967 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:27:33,974 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:34,640 WARN L205 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-03-10 22:27:34,641 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:27:34,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:34,654 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:27:34,659 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:35,203 WARN L205 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-03-10 22:27:35,204 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:27:35,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:35,223 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:27:35,228 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:35,764 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-10 22:27:35,765 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:27:35,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:35,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:35,781 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:27:35,786 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:35,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:35,799 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:27:35,805 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:36,341 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-03-10 22:27:36,343 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:27:36,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:36,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:36,358 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:27:36,362 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:36,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:27:36,373 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:27:36,378 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:36,877 WARN L205 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 22:27:36,878 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:27:36,898 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-03-10 22:27:36,898 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:561, output treesize:218 [2021-03-10 22:27:37,774 WARN L205 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2021-03-10 22:27:39,232 WARN L205 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 92 [2021-03-10 22:27:40,314 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2021-03-10 22:27:41,011 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 22:27:41,890 INFO L446 ElimStorePlain]: Different costs {0=[array_6, v_prenex_653], 1=[array_0, v_prenex_652]} [2021-03-10 22:27:41,902 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 22 treesize of output 16 [2021-03-10 22:27:41,907 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:41,923 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 22 treesize of output 16 [2021-03-10 22:27:41,929 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:41,942 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:27:41,947 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:41,962 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 29 treesize of output 21 [2021-03-10 22:27:41,967 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:41,979 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:27:41,984 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:41,993 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:27:41,997 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:42,718 WARN L205 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2021-03-10 22:27:42,720 INFO L628 ElimStorePlain]: treesize reduction 327, result has 28.1 percent of original size [2021-03-10 22:27:42,729 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 7 treesize of output 5 [2021-03-10 22:27:42,735 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:27:43,020 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 22:27:43,021 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:27:43,021 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:27:43,021 INFO L518 ElimStorePlain]: Eliminatee v_prenex_652 vanished before elimination [2021-03-10 22:27:43,024 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 22:27:43,025 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 6 variables, input treesize:630, output treesize:105 [2021-03-10 22:27:43,401 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 22:27:43,701 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 22:27:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:27:43,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:27:43,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:27:43,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415772920] [2021-03-10 22:27:43,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:27:43,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:27:43,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:27:43,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:27:43,742 INFO L87 Difference]: Start difference. First operand 287 states and 828 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:27:44,164 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-03-10 22:27:44,899 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-03-10 22:27:46,809 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2021-03-10 22:27:52,473 WARN L205 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 192 DAG size of output: 171 [2021-03-10 22:28:00,391 WARN L205 SmtUtils]: Spent 6.80 s on a formula simplification. DAG size of input: 217 DAG size of output: 184 [2021-03-10 22:28:09,443 WARN L205 SmtUtils]: Spent 8.29 s on a formula simplification. DAG size of input: 230 DAG size of output: 190 [2021-03-10 22:28:18,242 WARN L205 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 236 DAG size of output: 197 [2021-03-10 22:28:28,544 WARN L205 SmtUtils]: Spent 9.48 s on a formula simplification. DAG size of input: 238 DAG size of output: 201 [2021-03-10 22:28:37,709 WARN L205 SmtUtils]: Spent 8.53 s on a formula simplification. DAG size of input: 231 DAG size of output: 197 [2021-03-10 22:28:38,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:28:38,058 INFO L93 Difference]: Finished difference Result 656 states and 1793 transitions. [2021-03-10 22:28:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 22:28:38,063 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:28:38,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:28:38,064 INFO L225 Difference]: With dead ends: 656 [2021-03-10 22:28:38,064 INFO L226 Difference]: Without dead ends: 594 [2021-03-10 22:28:38,064 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 56151.5ms TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2021-03-10 22:28:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-10 22:28:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 294. [2021-03-10 22:28:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.9044368600682593) internal successors, (851), 293 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 851 transitions. [2021-03-10 22:28:38,069 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 851 transitions. Word has length 20 [2021-03-10 22:28:38,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:28:38,069 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 851 transitions. [2021-03-10 22:28:38,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:28:38,069 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 851 transitions. [2021-03-10 22:28:38,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:28:38,069 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:28:38,069 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:28:38,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4538,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:28:38,270 INFO L428 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:28:38,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:28:38,270 INFO L82 PathProgramCache]: Analyzing trace with hash 884403472, now seen corresponding path program 31 times [2021-03-10 22:28:38,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:28:38,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778909801] [2021-03-10 22:28:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:28:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:28:38,688 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-10 22:28:38,957 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-03-10 22:28:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:28:39,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778909801] [2021-03-10 22:28:39,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844080460] [2021-03-10 22:28:39,335 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 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 [2021-03-10 22:28:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:28:39,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 22:28:39,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:28:39,872 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 22:28:40,375 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 22:28:41,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:41,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:41,991 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:28:41,996 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:42,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:42,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:42,015 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-03-10 22:28:42,021 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:42,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:42,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:42,038 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-03-10 22:28:42,044 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:42,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:42,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:42,061 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:28:42,066 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:42,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:42,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:42,083 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-03-10 22:28:42,089 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:42,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:42,103 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:28:42,108 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:43,760 WARN L205 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2021-03-10 22:28:43,762 INFO L628 ElimStorePlain]: treesize reduction 448, result has 43.1 percent of original size [2021-03-10 22:28:43,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:43,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:43,778 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:28:43,784 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:43,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:43,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:43,800 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:28:43,805 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:43,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:43,818 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:28:43,824 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:45,223 WARN L205 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2021-03-10 22:28:45,225 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-03-10 22:28:45,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:45,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:45,242 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-03-10 22:28:45,248 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:45,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:45,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:45,268 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:28:45,275 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:45,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:28:45,289 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:28:45,296 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:46,453 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-03-10 22:28:46,455 INFO L628 ElimStorePlain]: treesize reduction 27, result has 89.6 percent of original size [2021-03-10 22:28:46,475 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-03-10 22:28:46,476 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:895, output treesize:217 [2021-03-10 22:28:46,998 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-10 22:28:48,413 WARN L205 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 92 [2021-03-10 22:28:49,320 WARN L205 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-03-10 22:28:50,805 INFO L446 ElimStorePlain]: Different costs {0=[array_6, v_prenex_673, v_prenex_675, v_prenex_677], 1=[array_0, v_prenex_672, v_prenex_674, v_prenex_676]} [2021-03-10 22:28:50,819 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 29 treesize of output 21 [2021-03-10 22:28:50,824 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:50,839 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:28:50,844 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:50,858 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:28:50,863 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:50,877 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:28:50,882 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:50,897 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:28:50,902 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:50,916 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:28:50,921 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:52,417 WARN L205 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-03-10 22:28:52,419 INFO L628 ElimStorePlain]: treesize reduction 711, result has 25.3 percent of original size [2021-03-10 22:28:52,431 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 7 treesize of output 5 [2021-03-10 22:28:52,438 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:53,023 WARN L205 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 22:28:53,024 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:28:53,036 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 12 [2021-03-10 22:28:53,043 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:53,052 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:28:53,057 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:53,536 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-03-10 22:28:53,538 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:28:53,549 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 7 treesize of output 5 [2021-03-10 22:28:53,556 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:28:54,027 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 22:28:54,029 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:28:54,029 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:28:54,029 INFO L518 ElimStorePlain]: Eliminatee v_prenex_672 vanished before elimination [2021-03-10 22:28:54,029 INFO L518 ElimStorePlain]: Eliminatee v_prenex_674 vanished before elimination [2021-03-10 22:28:54,029 INFO L518 ElimStorePlain]: Eliminatee v_prenex_676 vanished before elimination [2021-03-10 22:28:54,034 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:28:54,034 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1193, output treesize:143 [2021-03-10 22:28:54,967 WARN L205 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-03-10 22:28:55,440 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 22:28:55,759 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2021-03-10 22:28:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:28:55,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:28:55,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:28:55,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213781656] [2021-03-10 22:28:55,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:28:55,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:28:55,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:28:55,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:28:55,813 INFO L87 Difference]: Start difference. First operand 294 states and 851 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:28:56,257 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-03-10 22:28:57,074 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-03-10 22:28:59,147 WARN L205 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2021-03-10 22:29:04,918 WARN L205 SmtUtils]: Spent 5.22 s on a formula simplification. DAG size of input: 196 DAG size of output: 176 [2021-03-10 22:29:11,676 WARN L205 SmtUtils]: Spent 5.89 s on a formula simplification. DAG size of input: 208 DAG size of output: 185 [2021-03-10 22:29:17,051 WARN L205 SmtUtils]: Spent 4.75 s on a formula simplification. DAG size of input: 216 DAG size of output: 191 [2021-03-10 22:29:23,344 WARN L205 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 220 DAG size of output: 194 [2021-03-10 22:29:30,746 WARN L205 SmtUtils]: Spent 6.96 s on a formula simplification. DAG size of input: 211 DAG size of output: 187 [2021-03-10 22:29:36,616 WARN L205 SmtUtils]: Spent 5.39 s on a formula simplification. DAG size of input: 223 DAG size of output: 198 [2021-03-10 22:29:43,003 WARN L205 SmtUtils]: Spent 5.66 s on a formula simplification. DAG size of input: 229 DAG size of output: 201 [2021-03-10 22:29:51,358 WARN L205 SmtUtils]: Spent 7.53 s on a formula simplification. DAG size of input: 218 DAG size of output: 194 [2021-03-10 22:29:51,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:29:51,709 INFO L93 Difference]: Finished difference Result 683 states and 1875 transitions. [2021-03-10 22:29:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:29:51,715 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 20 [2021-03-10 22:29:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:29:51,716 INFO L225 Difference]: With dead ends: 683 [2021-03-10 22:29:51,716 INFO L226 Difference]: Without dead ends: 653 [2021-03-10 22:29:51,716 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 57111.4ms TimeCoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2021-03-10 22:29:51,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-10 22:29:51,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 300. [2021-03-10 22:29:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 2.9297658862876252) internal successors, (876), 299 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:51,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 876 transitions. [2021-03-10 22:29:51,721 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 876 transitions. Word has length 20 [2021-03-10 22:29:51,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:29:51,721 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 876 transitions. [2021-03-10 22:29:51,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:29:51,721 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 876 transitions. [2021-03-10 22:29:51,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 22:29:51,721 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:29:51,721 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:29:51,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4686 [2021-03-10 22:29:51,922 INFO L428 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:29:51,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:29:51,922 INFO L82 PathProgramCache]: Analyzing trace with hash -814316916, now seen corresponding path program 32 times [2021-03-10 22:29:51,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:29:51,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024311040] [2021-03-10 22:29:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:29:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:29:52,166 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 22:29:52,434 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2021-03-10 22:29:52,680 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-03-10 22:29:52,839 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-10 22:29:53,014 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 22:29:53,208 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 22:29:53,365 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-10 22:29:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:29:53,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024311040] [2021-03-10 22:29:53,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402114141] [2021-03-10 22:29:53,463 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 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 [2021-03-10 22:29:53,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 22:29:53,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 22:29:53,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 22:29:53,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 22:29:53,960 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-03-10 22:29:54,468 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 22:29:55,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:29:55,893 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:29:55,899 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:29:57,939 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 118 DAG size of output: 111 [2021-03-10 22:29:57,941 INFO L628 ElimStorePlain]: treesize reduction 187, result has 68.3 percent of original size [2021-03-10 22:29:57,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:29:57,957 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:29:57,964 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:29:58,924 WARN L205 SmtUtils]: Spent 960.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-10 22:29:58,926 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:29:58,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:29:58,943 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:29:58,949 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:29:59,929 WARN L205 SmtUtils]: Spent 978.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-03-10 22:29:59,930 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:29:59,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:29:59,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:29:59,951 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-03-10 22:29:59,957 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:29:59,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:29:59,974 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:29:59,980 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:01,054 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 99 [2021-03-10 22:30:01,056 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:30:01,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:30:01,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:30:01,081 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-03-10 22:30:01,090 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:01,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:30:01,107 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-03-10 22:30:01,114 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:02,195 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 93 [2021-03-10 22:30:02,197 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:30:02,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:30:02,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 22:30:02,220 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-03-10 22:30:02,229 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:02,241 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:30:02,248 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:03,093 WARN L205 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-03-10 22:30:03,094 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:30:03,120 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-03-10 22:30:03,120 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:597, output treesize:260 [2021-03-10 22:30:04,305 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-03-10 22:30:06,186 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 205 DAG size of output: 102 [2021-03-10 22:30:07,312 WARN L205 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-03-10 22:30:09,208 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_701, v_prenex_703, v_prenex_705, v_prenex_707, v_prenex_709, array_6, v_prenex_711], 1=[v_prenex_702, array_0, v_prenex_704, v_prenex_706, v_prenex_708, v_prenex_710, v_prenex_700]} [2021-03-10 22:30:09,229 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 15 treesize of output 11 [2021-03-10 22:30:09,235 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:09,265 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 22 treesize of output 16 [2021-03-10 22:30:09,272 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:09,296 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:30:09,303 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:09,332 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 22 treesize of output 16 [2021-03-10 22:30:09,338 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:09,367 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 29 treesize of output 21 [2021-03-10 22:30:09,374 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:09,394 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 22:30:09,400 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:12,237 WARN L205 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 174 DAG size of output: 110 [2021-03-10 22:30:12,239 INFO L628 ElimStorePlain]: treesize reduction 1584, result has 17.2 percent of original size [2021-03-10 22:30:12,255 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 12 [2021-03-10 22:30:12,263 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:13,215 WARN L205 SmtUtils]: Spent 951.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-03-10 22:30:13,217 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:30:13,234 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 7 treesize of output 5 [2021-03-10 22:30:13,242 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:14,159 WARN L205 SmtUtils]: Spent 915.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-03-10 22:30:14,161 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:30:14,176 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 9 treesize of output 7 [2021-03-10 22:30:14,186 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:15,096 WARN L205 SmtUtils]: Spent 909.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-03-10 22:30:15,097 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:30:15,111 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 12 [2021-03-10 22:30:15,119 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:15,971 WARN L205 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-03-10 22:30:15,973 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:30:15,987 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 8 treesize of output 6 [2021-03-10 22:30:15,994 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:16,008 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 12 [2021-03-10 22:30:16,015 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:17,421 WARN L205 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2021-03-10 22:30:17,422 INFO L628 ElimStorePlain]: treesize reduction 33, result has 87.3 percent of original size [2021-03-10 22:30:17,438 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 7 treesize of output 5 [2021-03-10 22:30:17,445 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 22:30:18,121 WARN L205 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-03-10 22:30:18,123 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 22:30:18,123 INFO L518 ElimStorePlain]: Eliminatee v_prenex_702 vanished before elimination [2021-03-10 22:30:18,123 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 22:30:18,123 INFO L518 ElimStorePlain]: Eliminatee v_prenex_704 vanished before elimination [2021-03-10 22:30:18,123 INFO L518 ElimStorePlain]: Eliminatee v_prenex_706 vanished before elimination [2021-03-10 22:30:18,123 INFO L518 ElimStorePlain]: Eliminatee v_prenex_708 vanished before elimination [2021-03-10 22:30:18,123 INFO L518 ElimStorePlain]: Eliminatee v_prenex_710 vanished before elimination [2021-03-10 22:30:18,123 INFO L518 ElimStorePlain]: Eliminatee v_prenex_700 vanished before elimination [2021-03-10 22:30:18,128 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 22:30:18,129 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 21 variables, input treesize:2091, output treesize:175 [2021-03-10 22:30:19,269 WARN L205 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-03-10 22:30:20,362 WARN L205 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-03-10 22:30:20,779 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-03-10 22:30:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:30:20,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 22:30:20,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-03-10 22:30:20,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961439128] [2021-03-10 22:30:20,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:30:20,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:30:20,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:30:20,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:30:20,855 INFO L87 Difference]: Start difference. First operand 300 states and 876 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-03-10 22:30:21,354 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2021-03-10 22:30:22,358 WARN L205 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-03-10 22:30:24,815 WARN L205 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 132 DAG size of output: 127 [2021-03-10 22:30:31,956 WARN L205 SmtUtils]: Spent 6.48 s on a formula simplification. DAG size of input: 191 DAG size of output: 178 [2021-03-10 22:30:32,983 WARN L205 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-03-10 22:30:34,321 WARN L205 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-03-10 22:30:39,442 WARN L205 SmtUtils]: Spent 4.74 s on a formula simplification. DAG size of input: 207 DAG size of output: 182 [2021-03-10 22:30:40,953 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2021-03-10 22:30:47,777 WARN L205 SmtUtils]: Spent 6.27 s on a formula simplification. DAG size of input: 219 DAG size of output: 192 [2021-03-10 22:30:49,997 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-03-10 22:30:56,896 WARN L205 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 222 DAG size of output: 195 Received shutdown request... [2021-03-10 22:31:03,200 WARN L222 SmtUtils]: Removed 4 from assertion stack [2021-03-10 22:31:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:31:03,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4858,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 22:31:03,401 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 22:31:03,404 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 22:31:03,404 INFO L202 PluginConnector]: Adding new model word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 10:31:03 BasicIcfg [2021-03-10 22:31:03,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 22:31:03,405 INFO L168 Benchmark]: Toolchain (without parser) took 813403.28 ms. Allocated memory was 354.4 MB in the beginning and 566.2 MB in the end (delta: 211.8 MB). Free memory was 334.8 MB in the beginning and 359.4 MB in the end (delta: -24.7 MB). Peak memory consumption was 189.9 MB. Max. memory is 16.0 GB. [2021-03-10 22:31:03,405 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 354.4 MB. Free memory was 336.2 MB in the beginning and 336.1 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 22:31:03,405 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.66 ms. Allocated memory is still 354.4 MB. Free memory was 334.3 MB in the beginning and 332.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 22:31:03,405 INFO L168 Benchmark]: Boogie Preprocessor took 14.59 ms. Allocated memory is still 354.4 MB. Free memory was 332.7 MB in the beginning and 331.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 22:31:03,405 INFO L168 Benchmark]: RCFGBuilder took 467.51 ms. Allocated memory is still 354.4 MB. Free memory was 331.6 MB in the beginning and 333.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.0 GB. [2021-03-10 22:31:03,405 INFO L168 Benchmark]: TraceAbstraction took 812881.83 ms. Allocated memory was 354.4 MB in the beginning and 566.2 MB in the end (delta: 211.8 MB). Free memory was 332.0 MB in the beginning and 359.4 MB in the end (delta: -27.5 MB). Peak memory consumption was 185.4 MB. Max. memory is 16.0 GB. [2021-03-10 22:31:03,405 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 0.12 ms. Allocated memory is still 354.4 MB. Free memory was 336.2 MB in the beginning and 336.1 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.66 ms. Allocated memory is still 354.4 MB. Free memory was 334.3 MB in the beginning and 332.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.59 ms. Allocated memory is still 354.4 MB. Free memory was 332.7 MB in the beginning and 331.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 467.51 ms. Allocated memory is still 354.4 MB. Free memory was 331.6 MB in the beginning and 333.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 812881.83 ms. Allocated memory was 354.4 MB in the beginning and 566.2 MB in the end (delta: 211.8 MB). Free memory was 332.0 MB in the beginning and 359.4 MB in the end (delta: -27.5 MB). Peak memory consumption was 185.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 128). Cancelled while BasicCegarLoop was constructing difference of abstraction (300states) and FLOYD_HOARE automaton (currently 14 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 206 for 5691ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 812770.8ms, OverallIterations: 181, TraceHistogramMax: 1, EmptinessCheckTime: 115.1ms, AutomataDifference: 477589.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9288 SDtfs, 16202 SDslu, 39040 SDs, 0 SdLazy, 30067 SolverSat, 1153 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 36424.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3455 GetRequests, 1093 SyntacticMatches, 82 SemanticMatches, 2279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3127 ImplicationChecksByTransitivity, 511784.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=326occurred in iteration=135, InterpolantAutomatonStates: 1521, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 923.0ms AutomataMinimizationTime, 180 MinimizatonAttempts, 31102 StatesRemovedByMinimization, 179 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 398.4ms SsaConstructionTime, 1126.0ms SatisfiabilityAnalysisTime, 318624.9ms InterpolantComputationTime, 4264 NumberOfCodeBlocks, 4264 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 4024 ConstructedInterpolants, 235 QuantifiedInterpolants, 84077 SizeOfPredicates, 546 NumberOfNonLiveVariables, 4347 ConjunctsInSsa, 970 ConjunctsInUnsatCore, 240 InterpolantComputations, 122 PerfectInterpolantSequences, 0/246 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