/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/array-int-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 21:45:00,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 21:45:00,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 21:45:00,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 21:45:00,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 21:45:00,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 21:45:00,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 21:45:00,928 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 21:45:00,953 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 21:45:00,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 21:45:00,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 21:45:00,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 21:45:00,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 21:45:00,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 21:45:00,954 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 21:45:00,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 21:45:00,954 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 21:45:00,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 21:45:00,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 21:45:00,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 21:45:00,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 21:45:00,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 21:45:00,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 21:45:00,955 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 21:45:00,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 21:45:00,956 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 21:45:00,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 21:45:00,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 21:45:00,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 21:45:00,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 21:45:00,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 21:45:00,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 21:45:00,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 21:45:00,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 21:45:00,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 21:45:00,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 21:45:00,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 21:45:00,957 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 21:45:00,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 21:45:00,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 21:45:01,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 21:45:01,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 21:45:01,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 21:45:01,196 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-10 21:45:01,196 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-10 21:45:01,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/array-int-trans.wvr.bpl [2021-03-10 21:45:01,197 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/array-int-trans.wvr.bpl' [2021-03-10 21:45:01,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 21:45:01,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-10 21:45:01,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 21:45:01,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 21:45:01,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 21:45:01,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:45:01" (1/1) ... [2021-03-10 21:45:01,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:45:01" (1/1) ... [2021-03-10 21:45:01,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 21:45:01,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 21:45:01,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 21:45:01,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 21:45:01,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:45:01" (1/1) ... [2021-03-10 21:45:01,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:45:01" (1/1) ... [2021-03-10 21:45:01,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:45:01" (1/1) ... [2021-03-10 21:45:01,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:45:01" (1/1) ... [2021-03-10 21:45:01,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:45:01" (1/1) ... [2021-03-10 21:45:01,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:45:01" (1/1) ... [2021-03-10 21:45:01,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:45:01" (1/1) ... [2021-03-10 21:45:01,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 21:45:01,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 21:45:01,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 21:45:01,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 21:45:01,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:45:01" (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 21:45:01,351 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-10 21:45:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-10 21:45:01,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-10 21:45:01,352 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-10 21:45:01,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-10 21:45:01,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-10 21:45:01,352 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-10 21:45:01,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 21:45:01,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 21:45:01,352 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-10 21:45:01,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-10 21:45:01,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-10 21:45:01,354 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 21:45:01,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 21:45:01,632 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-03-10 21:45:01,633 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2021-03-10 21:45:01,633 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2021-03-10 21:45:01,633 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread3EXIT is neither atomic block end nor error location. [2021-03-10 21:45:01,634 INFO L202 PluginConnector]: Adding new model array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 09:45:01 BoogieIcfgContainer [2021-03-10 21:45:01,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 21:45:01,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 21:45:01,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 21:45:01,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 21:45:01,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 09:45:01" (1/2) ... [2021-03-10 21:45:01,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49413a26 and model type array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 09:45:01, skipping insertion in model container [2021-03-10 21:45:01,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 09:45:01" (2/2) ... [2021-03-10 21:45:01,643 INFO L111 eAbstractionObserver]: Analyzing ICFG array-int-trans.wvr.bpl [2021-03-10 21:45:01,646 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 21:45:01,646 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 21:45:01,650 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 21:45:01,650 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 21:45:01,675 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-10 21:45:01,686 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 21:45:01,698 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 21:45:01,698 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 21:45:01,698 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 21:45:01,698 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 21:45:01,698 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 21:45:01,698 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 21:45:01,698 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 21:45:01,699 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 21:45:01,704 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 22 transitions, 68 flow [2021-03-10 21:45:01,715 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57 states, 55 states have (on average 2.7818181818181817) internal successors, (153), 56 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 55 states have (on average 2.7818181818181817) internal successors, (153), 56 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:01,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 21:45:01,722 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:01,722 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:01,722 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:01,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:01,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2084068600, now seen corresponding path program 1 times [2021-03-10 21:45:01,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:01,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773708504] [2021-03-10 21:45:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:01,880 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 21:45:01,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773708504] [2021-03-10 21:45:01,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 21:45:01,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 21:45:01,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415793035] [2021-03-10 21:45:01,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 21:45:01,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:01,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 21:45:01,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 21:45:01,898 INFO L87 Difference]: Start difference. First operand has 57 states, 55 states have (on average 2.7818181818181817) internal successors, (153), 56 states have internal predecessors, (153), 0 states have call successors, (0), 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 21:45:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:02,005 INFO L93 Difference]: Finished difference Result 139 states and 379 transitions. [2021-03-10 21:45:02,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 21:45:02,007 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 21:45:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:02,021 INFO L225 Difference]: With dead ends: 139 [2021-03-10 21:45:02,021 INFO L226 Difference]: Without dead ends: 135 [2021-03-10 21:45:02,023 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 21:45:02,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-03-10 21:45:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 84. [2021-03-10 21:45:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.819277108433735) internal successors, (234), 83 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 234 transitions. [2021-03-10 21:45:02,072 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 234 transitions. Word has length 14 [2021-03-10 21:45:02,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:02,073 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 234 transitions. [2021-03-10 21:45:02,073 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 21:45:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 234 transitions. [2021-03-10 21:45:02,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 21:45:02,075 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:02,076 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:02,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 21:45:02,076 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:02,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:02,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1063669592, now seen corresponding path program 2 times [2021-03-10 21:45:02,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:02,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754208242] [2021-03-10 21:45:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:02,125 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 21:45:02,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754208242] [2021-03-10 21:45:02,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 21:45:02,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 21:45:02,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579581371] [2021-03-10 21:45:02,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 21:45:02,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:02,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 21:45:02,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 21:45:02,128 INFO L87 Difference]: Start difference. First operand 84 states and 234 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 21:45:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:02,242 INFO L93 Difference]: Finished difference Result 156 states and 429 transitions. [2021-03-10 21:45:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 21:45:02,242 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 21:45:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:02,245 INFO L225 Difference]: With dead ends: 156 [2021-03-10 21:45:02,245 INFO L226 Difference]: Without dead ends: 152 [2021-03-10 21:45:02,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 21:45:02,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-03-10 21:45:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 90. [2021-03-10 21:45:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.831460674157303) internal successors, (252), 89 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 252 transitions. [2021-03-10 21:45:02,262 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 252 transitions. Word has length 14 [2021-03-10 21:45:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:02,262 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 252 transitions. [2021-03-10 21:45:02,262 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 21:45:02,262 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 252 transitions. [2021-03-10 21:45:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 21:45:02,264 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:02,264 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:02,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 21:45:02,264 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:02,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:02,266 INFO L82 PathProgramCache]: Analyzing trace with hash 284971666, now seen corresponding path program 3 times [2021-03-10 21:45:02,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:02,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108620549] [2021-03-10 21:45:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:02,329 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 21:45:02,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108620549] [2021-03-10 21:45:02,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 21:45:02,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 21:45:02,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339139432] [2021-03-10 21:45:02,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 21:45:02,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:02,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 21:45:02,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 21:45:02,332 INFO L87 Difference]: Start difference. First operand 90 states and 252 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 21:45:02,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:02,408 INFO L93 Difference]: Finished difference Result 169 states and 467 transitions. [2021-03-10 21:45:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 21:45:02,408 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 21:45:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:02,410 INFO L225 Difference]: With dead ends: 169 [2021-03-10 21:45:02,410 INFO L226 Difference]: Without dead ends: 165 [2021-03-10 21:45:02,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 21:45:02,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-03-10 21:45:02,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 94. [2021-03-10 21:45:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.838709677419355) internal successors, (264), 93 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 264 transitions. [2021-03-10 21:45:02,428 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 264 transitions. Word has length 14 [2021-03-10 21:45:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:02,432 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 264 transitions. [2021-03-10 21:45:02,432 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 21:45:02,432 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 264 transitions. [2021-03-10 21:45:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 21:45:02,435 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:02,435 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:02,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 21:45:02,435 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:02,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:02,436 INFO L82 PathProgramCache]: Analyzing trace with hash -791726200, now seen corresponding path program 4 times [2021-03-10 21:45:02,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:02,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079343363] [2021-03-10 21:45:02,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:02,486 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 21:45:02,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079343363] [2021-03-10 21:45:02,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 21:45:02,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 21:45:02,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030837377] [2021-03-10 21:45:02,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 21:45:02,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:02,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 21:45:02,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 21:45:02,488 INFO L87 Difference]: Start difference. First operand 94 states and 264 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 21:45:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:02,560 INFO L93 Difference]: Finished difference Result 173 states and 479 transitions. [2021-03-10 21:45:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 21:45:02,560 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 21:45:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:02,562 INFO L225 Difference]: With dead ends: 173 [2021-03-10 21:45:02,562 INFO L226 Difference]: Without dead ends: 169 [2021-03-10 21:45:02,562 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 21:45:02,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-03-10 21:45:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 98. [2021-03-10 21:45:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.845360824742268) internal successors, (276), 97 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 276 transitions. [2021-03-10 21:45:02,573 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 276 transitions. Word has length 14 [2021-03-10 21:45:02,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:02,573 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 276 transitions. [2021-03-10 21:45:02,573 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 21:45:02,573 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 276 transitions. [2021-03-10 21:45:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 21:45:02,575 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:02,575 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:02,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 21:45:02,576 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:02,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:02,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1403359368, now seen corresponding path program 5 times [2021-03-10 21:45:02,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:02,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637547605] [2021-03-10 21:45:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:02,624 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 21:45:02,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637547605] [2021-03-10 21:45:02,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 21:45:02,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 21:45:02,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666489907] [2021-03-10 21:45:02,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 21:45:02,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:02,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 21:45:02,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 21:45:02,628 INFO L87 Difference]: Start difference. First operand 98 states and 276 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 21:45:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:02,705 INFO L93 Difference]: Finished difference Result 176 states and 489 transitions. [2021-03-10 21:45:02,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 21:45:02,705 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 21:45:02,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:02,707 INFO L225 Difference]: With dead ends: 176 [2021-03-10 21:45:02,707 INFO L226 Difference]: Without dead ends: 172 [2021-03-10 21:45:02,709 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 21:45:02,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-03-10 21:45:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 100. [2021-03-10 21:45:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.8484848484848486) internal successors, (282), 99 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 282 transitions. [2021-03-10 21:45:02,714 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 282 transitions. Word has length 14 [2021-03-10 21:45:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:02,714 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 282 transitions. [2021-03-10 21:45:02,714 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 21:45:02,714 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 282 transitions. [2021-03-10 21:45:02,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 21:45:02,715 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:02,715 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:02,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 21:45:02,715 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:02,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:02,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1756874686, now seen corresponding path program 6 times [2021-03-10 21:45:02,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:02,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603919392] [2021-03-10 21:45:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:02,760 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 21:45:02,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603919392] [2021-03-10 21:45:02,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 21:45:02,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 21:45:02,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27814805] [2021-03-10 21:45:02,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-10 21:45:02,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:02,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-10 21:45:02,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-10 21:45:02,762 INFO L87 Difference]: Start difference. First operand 100 states and 282 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 21:45:02,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:02,825 INFO L93 Difference]: Finished difference Result 174 states and 483 transitions. [2021-03-10 21:45:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 21:45:02,825 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 21:45:02,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:02,826 INFO L225 Difference]: With dead ends: 174 [2021-03-10 21:45:02,826 INFO L226 Difference]: Without dead ends: 170 [2021-03-10 21:45:02,827 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-10 21:45:02,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-03-10 21:45:02,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 100. [2021-03-10 21:45:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.8484848484848486) internal successors, (282), 99 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 282 transitions. [2021-03-10 21:45:02,830 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 282 transitions. Word has length 14 [2021-03-10 21:45:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:02,830 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 282 transitions. [2021-03-10 21:45:02,830 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 21:45:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 282 transitions. [2021-03-10 21:45:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:02,831 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:02,831 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:02,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 21:45:02,832 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:02,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:02,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1483038554, now seen corresponding path program 1 times [2021-03-10 21:45:02,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:02,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710876395] [2021-03-10 21:45:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:02,922 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 21:45:02,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710876395] [2021-03-10 21:45:02,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140273421] [2021-03-10 21:45:02,922 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 21:45:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:02,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:02,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:03,063 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 21:45:03,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:03,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-03-10 21:45:03,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741416983] [2021-03-10 21:45:03,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:45:03,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:03,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:45:03,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:45:03,064 INFO L87 Difference]: Start difference. First operand 100 states and 282 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:03,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:03,153 INFO L93 Difference]: Finished difference Result 179 states and 476 transitions. [2021-03-10 21:45:03,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 21:45:03,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:03,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:03,154 INFO L225 Difference]: With dead ends: 179 [2021-03-10 21:45:03,155 INFO L226 Difference]: Without dead ends: 157 [2021-03-10 21:45:03,155 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-03-10 21:45:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 113. [2021-03-10 21:45:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 2.8214285714285716) internal successors, (316), 112 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 316 transitions. [2021-03-10 21:45:03,158 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 316 transitions. Word has length 15 [2021-03-10 21:45:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:03,158 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 316 transitions. [2021-03-10 21:45:03,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:03,158 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 316 transitions. [2021-03-10 21:45:03,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:03,159 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:03,159 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:03,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-03-10 21:45:03,375 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:03,375 INFO L82 PathProgramCache]: Analyzing trace with hash -180956976, now seen corresponding path program 1 times [2021-03-10 21:45:03,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:03,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475250685] [2021-03-10 21:45:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:03,450 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 21:45:03,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475250685] [2021-03-10 21:45:03,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99791822] [2021-03-10 21:45:03,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:45:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:03,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:03,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:03,629 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 21:45:03,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:03,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-03-10 21:45:03,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588996005] [2021-03-10 21:45:03,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 21:45:03,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:03,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 21:45:03,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:45:03,630 INFO L87 Difference]: Start difference. First operand 113 states and 316 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:03,737 INFO L93 Difference]: Finished difference Result 173 states and 446 transitions. [2021-03-10 21:45:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:03,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:03,738 INFO L225 Difference]: With dead ends: 173 [2021-03-10 21:45:03,738 INFO L226 Difference]: Without dead ends: 150 [2021-03-10 21:45:03,738 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:45:03,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-03-10 21:45:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 110. [2021-03-10 21:45:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.8073394495412844) internal successors, (306), 109 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 306 transitions. [2021-03-10 21:45:03,743 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 306 transitions. Word has length 15 [2021-03-10 21:45:03,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:03,743 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 306 transitions. [2021-03-10 21:45:03,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:03,743 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 306 transitions. [2021-03-10 21:45:03,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:03,743 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:03,743 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:03,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:03,948 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1385320832, now seen corresponding path program 2 times [2021-03-10 21:45:03,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:03,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096140573] [2021-03-10 21:45:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:04,009 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 21:45:04,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096140573] [2021-03-10 21:45:04,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76802596] [2021-03-10 21:45:04,009 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 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 21:45:04,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:04,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:04,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:04,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:04,125 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 21:45:04,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:04,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-03-10 21:45:04,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692925313] [2021-03-10 21:45:04,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:45:04,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:04,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:45:04,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:04,127 INFO L87 Difference]: Start difference. First operand 110 states and 306 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 21:45:04,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:04,269 INFO L93 Difference]: Finished difference Result 193 states and 494 transitions. [2021-03-10 21:45:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:04,269 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15 [2021-03-10 21:45:04,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:04,270 INFO L225 Difference]: With dead ends: 193 [2021-03-10 21:45:04,270 INFO L226 Difference]: Without dead ends: 177 [2021-03-10 21:45:04,270 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:45:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-03-10 21:45:04,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 119. [2021-03-10 21:45:04,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 2.76271186440678) internal successors, (326), 118 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 326 transitions. [2021-03-10 21:45:04,274 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 326 transitions. Word has length 15 [2021-03-10 21:45:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:04,274 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 326 transitions. [2021-03-10 21:45:04,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 21:45:04,275 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 326 transitions. [2021-03-10 21:45:04,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:04,275 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:04,275 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:04,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-03-10 21:45:04,484 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:04,484 INFO L82 PathProgramCache]: Analyzing trace with hash 951223692, now seen corresponding path program 3 times [2021-03-10 21:45:04,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:04,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627913244] [2021-03-10 21:45:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:04,544 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 21:45:04,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627913244] [2021-03-10 21:45:04,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064551489] [2021-03-10 21:45:04,544 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 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 21:45:04,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:45:04,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:04,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:04,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:04,650 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 21:45:04,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:04,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-03-10 21:45:04,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339393198] [2021-03-10 21:45:04,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:04,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:04,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:04,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:04,652 INFO L87 Difference]: Start difference. First operand 119 states and 326 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:05,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:05,157 INFO L93 Difference]: Finished difference Result 240 states and 644 transitions. [2021-03-10 21:45:05,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 21:45:05,158 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have 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 21:45:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:05,159 INFO L225 Difference]: With dead ends: 240 [2021-03-10 21:45:05,159 INFO L226 Difference]: Without dead ends: 188 [2021-03-10 21:45:05,159 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 308.2ms TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2021-03-10 21:45:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-03-10 21:45:05,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 114. [2021-03-10 21:45:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.8584070796460175) internal successors, (323), 113 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 323 transitions. [2021-03-10 21:45:05,162 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 323 transitions. Word has length 15 [2021-03-10 21:45:05,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:05,162 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 323 transitions. [2021-03-10 21:45:05,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:05,162 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 323 transitions. [2021-03-10 21:45:05,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:05,163 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:05,163 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:05,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:05,378 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:05,379 INFO L82 PathProgramCache]: Analyzing trace with hash 479848854, now seen corresponding path program 1 times [2021-03-10 21:45:05,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:05,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058100667] [2021-03-10 21:45:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:05,418 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 21:45:05,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058100667] [2021-03-10 21:45:05,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932567554] [2021-03-10 21:45:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) [2021-03-10 21:45:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:05,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:05,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:05,522 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 21:45:05,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:05,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-03-10 21:45:05,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244747] [2021-03-10 21:45:05,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 21:45:05,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:05,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 21:45:05,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:45:05,525 INFO L87 Difference]: Start difference. First operand 114 states and 323 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:05,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:05,642 INFO L93 Difference]: Finished difference Result 191 states and 526 transitions. [2021-03-10 21:45:05,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:05,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:05,643 INFO L225 Difference]: With dead ends: 191 [2021-03-10 21:45:05,643 INFO L226 Difference]: Without dead ends: 186 [2021-03-10 21:45:05,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:45:05,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-03-10 21:45:05,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 122. [2021-03-10 21:45:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.909090909090909) internal successors, (352), 121 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 352 transitions. [2021-03-10 21:45:05,648 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 352 transitions. Word has length 15 [2021-03-10 21:45:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:05,648 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 352 transitions. [2021-03-10 21:45:05,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 352 transitions. [2021-03-10 21:45:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:05,648 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:05,648 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:05,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-03-10 21:45:05,855 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:05,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1061667084, now seen corresponding path program 2 times [2021-03-10 21:45:05,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:05,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926166725] [2021-03-10 21:45:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:05,901 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 21:45:05,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926166725] [2021-03-10 21:45:05,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250693734] [2021-03-10 21:45:05,901 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 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 21:45:05,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:05,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:05,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:05,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:06,005 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 21:45:06,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:06,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-03-10 21:45:06,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974128480] [2021-03-10 21:45:06,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 21:45:06,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:06,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 21:45:06,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:45:06,006 INFO L87 Difference]: Start difference. First operand 122 states and 352 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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 21:45:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:06,291 INFO L93 Difference]: Finished difference Result 222 states and 617 transitions. [2021-03-10 21:45:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:45:06,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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 15 [2021-03-10 21:45:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:06,294 INFO L225 Difference]: With dead ends: 222 [2021-03-10 21:45:06,294 INFO L226 Difference]: Without dead ends: 203 [2021-03-10 21:45:06,294 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 181.3ms TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:45:06,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-03-10 21:45:06,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 128. [2021-03-10 21:45:06,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.937007874015748) internal successors, (373), 127 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 373 transitions. [2021-03-10 21:45:06,301 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 373 transitions. Word has length 15 [2021-03-10 21:45:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:06,301 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 373 transitions. [2021-03-10 21:45:06,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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 21:45:06,301 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 373 transitions. [2021-03-10 21:45:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:06,301 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:06,302 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:06,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-03-10 21:45:06,514 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:06,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:06,514 INFO L82 PathProgramCache]: Analyzing trace with hash 425707830, now seen corresponding path program 2 times [2021-03-10 21:45:06,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:06,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549583195] [2021-03-10 21:45:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:06,542 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 21:45:06,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549583195] [2021-03-10 21:45:06,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772183120] [2021-03-10 21:45:06,543 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 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 21:45:06,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:06,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:06,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:06,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:06,637 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 21:45:06,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:06,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-03-10 21:45:06,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695925168] [2021-03-10 21:45:06,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:06,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:06,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:06,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:06,638 INFO L87 Difference]: Start difference. First operand 128 states and 373 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:07,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:07,058 INFO L93 Difference]: Finished difference Result 285 states and 767 transitions. [2021-03-10 21:45:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 21:45:07,058 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have 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 21:45:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:07,059 INFO L225 Difference]: With dead ends: 285 [2021-03-10 21:45:07,059 INFO L226 Difference]: Without dead ends: 246 [2021-03-10 21:45:07,059 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 333.8ms TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:45:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-03-10 21:45:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 143. [2021-03-10 21:45:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 3.056338028169014) internal successors, (434), 142 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 21:45:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 434 transitions. [2021-03-10 21:45:07,063 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 434 transitions. Word has length 15 [2021-03-10 21:45:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:07,063 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 434 transitions. [2021-03-10 21:45:07,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 434 transitions. [2021-03-10 21:45:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:07,064 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:07,064 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:07,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:07,279 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:07,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:07,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1238287700, now seen corresponding path program 4 times [2021-03-10 21:45:07,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:07,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285541643] [2021-03-10 21:45:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:07,316 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 21:45:07,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285541643] [2021-03-10 21:45:07,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477195540] [2021-03-10 21:45:07,316 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 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 21:45:07,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:45:07,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:07,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:07,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:07,422 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 21:45:07,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:07,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-03-10 21:45:07,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841246141] [2021-03-10 21:45:07,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:45:07,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:07,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:45:07,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:07,423 INFO L87 Difference]: Start difference. First operand 143 states and 434 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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 21:45:07,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:07,536 INFO L93 Difference]: Finished difference Result 240 states and 643 transitions. [2021-03-10 21:45:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:07,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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 15 [2021-03-10 21:45:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:07,537 INFO L225 Difference]: With dead ends: 240 [2021-03-10 21:45:07,537 INFO L226 Difference]: Without dead ends: 217 [2021-03-10 21:45:07,538 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:45:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-03-10 21:45:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 145. [2021-03-10 21:45:07,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 3.0277777777777777) internal successors, (436), 144 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:07,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 436 transitions. [2021-03-10 21:45:07,542 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 436 transitions. Word has length 15 [2021-03-10 21:45:07,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:07,542 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 436 transitions. [2021-03-10 21:45:07,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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 21:45:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 436 transitions. [2021-03-10 21:45:07,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:07,542 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:07,542 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:07,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-03-10 21:45:07,757 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:07,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:07,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1919639656, now seen corresponding path program 5 times [2021-03-10 21:45:07,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:07,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712501307] [2021-03-10 21:45:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:07,804 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 21:45:07,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712501307] [2021-03-10 21:45:07,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614910031] [2021-03-10 21:45:07,805 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 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 21:45:07,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:07,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:07,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:07,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:07,892 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 21:45:07,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:07,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-03-10 21:45:07,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878949075] [2021-03-10 21:45:07,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:45:07,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:07,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:45:07,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:45:07,894 INFO L87 Difference]: Start difference. First operand 145 states and 436 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 21:45:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:07,975 INFO L93 Difference]: Finished difference Result 226 states and 636 transitions. [2021-03-10 21:45:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 21:45:07,975 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 15 [2021-03-10 21:45:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:07,976 INFO L225 Difference]: With dead ends: 226 [2021-03-10 21:45:07,976 INFO L226 Difference]: Without dead ends: 205 [2021-03-10 21:45:07,977 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-03-10 21:45:07,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 156. [2021-03-10 21:45:07,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.9548387096774196) internal successors, (458), 155 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 21:45:07,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 458 transitions. [2021-03-10 21:45:07,981 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 458 transitions. Word has length 15 [2021-03-10 21:45:07,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:07,981 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 458 transitions. [2021-03-10 21:45:07,981 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 21:45:07,981 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 458 transitions. [2021-03-10 21:45:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:07,982 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:07,982 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:08,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:08,195 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:08,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:08,196 INFO L82 PathProgramCache]: Analyzing trace with hash 261780050, now seen corresponding path program 3 times [2021-03-10 21:45:08,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:08,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18300432] [2021-03-10 21:45:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:08,233 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 21:45:08,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18300432] [2021-03-10 21:45:08,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155072699] [2021-03-10 21:45:08,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:45:08,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:45:08,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:08,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:08,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:08,331 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 21:45:08,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:08,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-03-10 21:45:08,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246895135] [2021-03-10 21:45:08,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:45:08,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:08,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:45:08,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:08,333 INFO L87 Difference]: Start difference. First operand 156 states and 458 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:08,761 INFO L93 Difference]: Finished difference Result 360 states and 970 transitions. [2021-03-10 21:45:08,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 21:45:08,761 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have 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 21:45:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:08,764 INFO L225 Difference]: With dead ends: 360 [2021-03-10 21:45:08,764 INFO L226 Difference]: Without dead ends: 313 [2021-03-10 21:45:08,764 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 272.8ms TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:45:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-03-10 21:45:08,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 169. [2021-03-10 21:45:08,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 3.011904761904762) internal successors, (506), 168 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 21:45:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 506 transitions. [2021-03-10 21:45:08,780 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 506 transitions. Word has length 15 [2021-03-10 21:45:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:08,780 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 506 transitions. [2021-03-10 21:45:08,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:08,780 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 506 transitions. [2021-03-10 21:45:08,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:08,781 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:08,781 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:08,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:08,995 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:08,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:08,996 INFO L82 PathProgramCache]: Analyzing trace with hash 970590554, now seen corresponding path program 6 times [2021-03-10 21:45:08,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:08,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431798789] [2021-03-10 21:45:08,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:09,037 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 21:45:09,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431798789] [2021-03-10 21:45:09,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901041974] [2021-03-10 21:45:09,037 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 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 21:45:09,056 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 21:45:09,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:09,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:09,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:09,140 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 21:45:09,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:09,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-03-10 21:45:09,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874642280] [2021-03-10 21:45:09,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:09,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:09,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:09,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:09,142 INFO L87 Difference]: Start difference. First operand 169 states and 506 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:09,604 INFO L93 Difference]: Finished difference Result 395 states and 1063 transitions. [2021-03-10 21:45:09,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 21:45:09,605 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have 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 21:45:09,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:09,606 INFO L225 Difference]: With dead ends: 395 [2021-03-10 21:45:09,606 INFO L226 Difference]: Without dead ends: 351 [2021-03-10 21:45:09,606 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 355.0ms TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:45:09,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-03-10 21:45:09,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 188. [2021-03-10 21:45:09,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 3.128342245989305) internal successors, (585), 187 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 21:45:09,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 585 transitions. [2021-03-10 21:45:09,612 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 585 transitions. Word has length 15 [2021-03-10 21:45:09,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:09,612 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 585 transitions. [2021-03-10 21:45:09,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 585 transitions. [2021-03-10 21:45:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:09,612 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:09,613 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:09,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-03-10 21:45:09,827 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:09,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1191223272, now seen corresponding path program 3 times [2021-03-10 21:45:09,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:09,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41693] [2021-03-10 21:45:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:09,865 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 21:45:09,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41693] [2021-03-10 21:45:09,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528302367] [2021-03-10 21:45:09,865 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 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 21:45:09,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:45:09,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:09,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:09,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:09,968 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 21:45:09,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:09,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-03-10 21:45:09,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450065980] [2021-03-10 21:45:09,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:09,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:09,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:09,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:09,969 INFO L87 Difference]: Start difference. First operand 188 states and 585 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:10,389 INFO L93 Difference]: Finished difference Result 296 states and 839 transitions. [2021-03-10 21:45:10,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 21:45:10,390 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have 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 21:45:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:10,391 INFO L225 Difference]: With dead ends: 296 [2021-03-10 21:45:10,391 INFO L226 Difference]: Without dead ends: 257 [2021-03-10 21:45:10,391 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 299.5ms TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:45:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-03-10 21:45:10,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 185. [2021-03-10 21:45:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 3.1032608695652173) internal successors, (571), 184 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 21:45:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 571 transitions. [2021-03-10 21:45:10,395 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 571 transitions. Word has length 15 [2021-03-10 21:45:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:10,396 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 571 transitions. [2021-03-10 21:45:10,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:10,396 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 571 transitions. [2021-03-10 21:45:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:10,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:10,396 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:10,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:10,603 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:10,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:10,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1752078530, now seen corresponding path program 4 times [2021-03-10 21:45:10,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:10,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449875933] [2021-03-10 21:45:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:10,636 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 21:45:10,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449875933] [2021-03-10 21:45:10,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956073488] [2021-03-10 21:45:10,636 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 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 21:45:10,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:45:10,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:10,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:10,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:10,717 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 21:45:10,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:10,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-03-10 21:45:10,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706796977] [2021-03-10 21:45:10,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:45:10,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:10,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:45:10,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:45:10,718 INFO L87 Difference]: Start difference. First operand 185 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:10,788 INFO L93 Difference]: Finished difference Result 224 states and 652 transitions. [2021-03-10 21:45:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 21:45:10,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-10 21:45:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:10,789 INFO L225 Difference]: With dead ends: 224 [2021-03-10 21:45:10,790 INFO L226 Difference]: Without dead ends: 204 [2021-03-10 21:45:10,790 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 65.0ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:10,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-03-10 21:45:10,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 180. [2021-03-10 21:45:10,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 3.083798882681564) internal successors, (552), 179 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 21:45:10,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 552 transitions. [2021-03-10 21:45:10,794 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 552 transitions. Word has length 15 [2021-03-10 21:45:10,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:10,794 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 552 transitions. [2021-03-10 21:45:10,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:10,794 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 552 transitions. [2021-03-10 21:45:10,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:10,794 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:10,794 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:11,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-03-10 21:45:11,007 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:11,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1743627284, now seen corresponding path program 7 times [2021-03-10 21:45:11,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:11,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167775397] [2021-03-10 21:45:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:11,053 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 21:45:11,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167775397] [2021-03-10 21:45:11,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691604196] [2021-03-10 21:45:11,054 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 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 21:45:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:11,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:11,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:11,168 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 21:45:11,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:11,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-03-10 21:45:11,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206661055] [2021-03-10 21:45:11,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:11,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:11,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:11,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:11,169 INFO L87 Difference]: Start difference. First operand 180 states and 552 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 21:45:11,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:11,290 INFO L93 Difference]: Finished difference Result 242 states and 690 transitions. [2021-03-10 21:45:11,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:11,290 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 15 [2021-03-10 21:45:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:11,292 INFO L225 Difference]: With dead ends: 242 [2021-03-10 21:45:11,292 INFO L226 Difference]: Without dead ends: 231 [2021-03-10 21:45:11,292 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 105.1ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:45:11,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-03-10 21:45:11,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 178. [2021-03-10 21:45:11,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 3.0847457627118646) internal successors, (546), 177 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 21:45:11,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 546 transitions. [2021-03-10 21:45:11,300 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 546 transitions. Word has length 15 [2021-03-10 21:45:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:11,300 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 546 transitions. [2021-03-10 21:45:11,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 21:45:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 546 transitions. [2021-03-10 21:45:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:11,302 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:11,302 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:11,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:11,517 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:11,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:11,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1883825052, now seen corresponding path program 8 times [2021-03-10 21:45:11,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:11,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075795079] [2021-03-10 21:45:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:11,558 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 21:45:11,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075795079] [2021-03-10 21:45:11,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86922088] [2021-03-10 21:45:11,559 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 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 21:45:11,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:11,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:11,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:11,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:11,649 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 21:45:11,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:11,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-03-10 21:45:11,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285687911] [2021-03-10 21:45:11,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:11,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:11,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:11,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:11,650 INFO L87 Difference]: Start difference. First operand 178 states and 546 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:12,220 INFO L93 Difference]: Finished difference Result 322 states and 890 transitions. [2021-03-10 21:45:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 21:45:12,221 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have 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 21:45:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:12,222 INFO L225 Difference]: With dead ends: 322 [2021-03-10 21:45:12,222 INFO L226 Difference]: Without dead ends: 279 [2021-03-10 21:45:12,222 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 420.0ms TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2021-03-10 21:45:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-03-10 21:45:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 168. [2021-03-10 21:45:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 3.0179640718562872) internal successors, (504), 167 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 504 transitions. [2021-03-10 21:45:12,233 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 504 transitions. Word has length 15 [2021-03-10 21:45:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:12,233 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 504 transitions. [2021-03-10 21:45:12,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 504 transitions. [2021-03-10 21:45:12,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:12,234 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:12,234 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:12,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-03-10 21:45:12,447 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:12,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:12,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2044993746, now seen corresponding path program 9 times [2021-03-10 21:45:12,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:12,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767687117] [2021-03-10 21:45:12,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:12,489 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 21:45:12,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767687117] [2021-03-10 21:45:12,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756292954] [2021-03-10 21:45:12,489 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-10 21:45:12,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:45:12,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:12,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:12,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:12,613 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 21:45:12,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:12,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-03-10 21:45:12,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465072749] [2021-03-10 21:45:12,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:12,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:12,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:12,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:12,614 INFO L87 Difference]: Start difference. First operand 168 states and 504 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 21:45:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:12,742 INFO L93 Difference]: Finished difference Result 251 states and 721 transitions. [2021-03-10 21:45:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:12,743 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 15 [2021-03-10 21:45:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:12,744 INFO L225 Difference]: With dead ends: 251 [2021-03-10 21:45:12,744 INFO L226 Difference]: Without dead ends: 240 [2021-03-10 21:45:12,744 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:45:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-03-10 21:45:12,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 167. [2021-03-10 21:45:12,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 3.0180722891566263) internal successors, (501), 166 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 501 transitions. [2021-03-10 21:45:12,748 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 501 transitions. Word has length 15 [2021-03-10 21:45:12,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:12,748 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 501 transitions. [2021-03-10 21:45:12,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 21:45:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 501 transitions. [2021-03-10 21:45:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:12,749 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:12,749 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:12,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:12,959 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:12,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1908842768, now seen corresponding path program 4 times [2021-03-10 21:45:12,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:12,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406551886] [2021-03-10 21:45:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:12,994 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 21:45:12,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406551886] [2021-03-10 21:45:12,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737826167] [2021-03-10 21:45:12,995 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 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 21:45:13,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:45:13,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:13,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:13,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:13,087 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 21:45:13,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:13,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-03-10 21:45:13,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301838589] [2021-03-10 21:45:13,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:45:13,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:13,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:45:13,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:45:13,088 INFO L87 Difference]: Start difference. First operand 167 states and 501 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:13,170 INFO L93 Difference]: Finished difference Result 216 states and 623 transitions. [2021-03-10 21:45:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 21:45:13,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:13,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:13,171 INFO L225 Difference]: With dead ends: 216 [2021-03-10 21:45:13,171 INFO L226 Difference]: Without dead ends: 194 [2021-03-10 21:45:13,171 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 70.9ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:13,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-03-10 21:45:13,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 173. [2021-03-10 21:45:13,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 2.953488372093023) internal successors, (508), 172 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 21:45:13,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 508 transitions. [2021-03-10 21:45:13,175 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 508 transitions. Word has length 15 [2021-03-10 21:45:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:13,175 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 508 transitions. [2021-03-10 21:45:13,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 508 transitions. [2021-03-10 21:45:13,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:13,175 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:13,175 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:13,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:13,387 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:13,387 INFO L82 PathProgramCache]: Analyzing trace with hash -838645562, now seen corresponding path program 10 times [2021-03-10 21:45:13,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:13,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372354873] [2021-03-10 21:45:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:13,432 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 21:45:13,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372354873] [2021-03-10 21:45:13,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420569839] [2021-03-10 21:45:13,433 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 21:45:13,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:45:13,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:13,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:13,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:13,543 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 21:45:13,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:13,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-03-10 21:45:13,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618122046] [2021-03-10 21:45:13,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 21:45:13,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:13,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 21:45:13,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:45:13,544 INFO L87 Difference]: Start difference. First operand 173 states and 508 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:13,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:13,644 INFO L93 Difference]: Finished difference Result 216 states and 576 transitions. [2021-03-10 21:45:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:13,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:13,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:13,646 INFO L225 Difference]: With dead ends: 216 [2021-03-10 21:45:13,646 INFO L226 Difference]: Without dead ends: 200 [2021-03-10 21:45:13,646 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:45:13,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-03-10 21:45:13,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 166. [2021-03-10 21:45:13,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.981818181818182) internal successors, (492), 165 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 492 transitions. [2021-03-10 21:45:13,649 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 492 transitions. Word has length 15 [2021-03-10 21:45:13,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:13,649 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 492 transitions. [2021-03-10 21:45:13,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:13,649 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 492 transitions. [2021-03-10 21:45:13,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:13,650 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:13,650 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:13,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-03-10 21:45:13,863 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:13,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1450061836, now seen corresponding path program 5 times [2021-03-10 21:45:13,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:13,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848621805] [2021-03-10 21:45:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:13,892 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 21:45:13,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848621805] [2021-03-10 21:45:13,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638243271] [2021-03-10 21:45:13,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:13,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:13,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:13,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:13,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:13,996 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 21:45:13,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:13,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-03-10 21:45:13,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130692604] [2021-03-10 21:45:13,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:45:13,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:13,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:45:13,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:13,997 INFO L87 Difference]: Start difference. First operand 166 states and 492 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:14,244 INFO L93 Difference]: Finished difference Result 232 states and 645 transitions. [2021-03-10 21:45:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:45:14,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have 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 21:45:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:14,245 INFO L225 Difference]: With dead ends: 232 [2021-03-10 21:45:14,245 INFO L226 Difference]: Without dead ends: 198 [2021-03-10 21:45:14,245 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 188.8ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:45:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-03-10 21:45:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 159. [2021-03-10 21:45:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.9430379746835444) internal successors, (465), 158 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 465 transitions. [2021-03-10 21:45:14,248 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 465 transitions. Word has length 15 [2021-03-10 21:45:14,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:14,248 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 465 transitions. [2021-03-10 21:45:14,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:14,249 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 465 transitions. [2021-03-10 21:45:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:14,249 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:14,249 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:14,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:14,455 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:14,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:14,456 INFO L82 PathProgramCache]: Analyzing trace with hash -260492346, now seen corresponding path program 11 times [2021-03-10 21:45:14,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:14,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254275450] [2021-03-10 21:45:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:14,493 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 21:45:14,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254275450] [2021-03-10 21:45:14,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989028538] [2021-03-10 21:45:14,494 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 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 21:45:14,525 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:14,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:14,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:14,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:14,600 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 21:45:14,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:14,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-03-10 21:45:14,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865575589] [2021-03-10 21:45:14,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:45:14,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:14,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:45:14,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:14,601 INFO L87 Difference]: Start difference. First operand 159 states and 465 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:14,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:14,736 INFO L93 Difference]: Finished difference Result 214 states and 577 transitions. [2021-03-10 21:45:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:14,738 INFO L225 Difference]: With dead ends: 214 [2021-03-10 21:45:14,738 INFO L226 Difference]: Without dead ends: 203 [2021-03-10 21:45:14,738 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 81.7ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:45:14,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-03-10 21:45:14,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 156. [2021-03-10 21:45:14,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.9419354838709677) internal successors, (456), 155 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 21:45:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 456 transitions. [2021-03-10 21:45:14,741 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 456 transitions. Word has length 15 [2021-03-10 21:45:14,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:14,741 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 456 transitions. [2021-03-10 21:45:14,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:14,741 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 456 transitions. [2021-03-10 21:45:14,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:14,742 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:14,742 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:14,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-03-10 21:45:14,946 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:14,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:14,946 INFO L82 PathProgramCache]: Analyzing trace with hash 738121340, now seen corresponding path program 6 times [2021-03-10 21:45:14,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:14,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828435492] [2021-03-10 21:45:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:14,969 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 21:45:14,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828435492] [2021-03-10 21:45:14,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018510604] [2021-03-10 21:45:14,970 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 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 21:45:14,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 21:45:14,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:14,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:14,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:15,029 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 21:45:15,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:15,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-03-10 21:45:15,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195488525] [2021-03-10 21:45:15,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 21:45:15,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:15,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 21:45:15,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-10 21:45:15,030 INFO L87 Difference]: Start difference. First operand 156 states and 456 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:15,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:15,100 INFO L93 Difference]: Finished difference Result 192 states and 534 transitions. [2021-03-10 21:45:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 21:45:15,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have 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 21:45:15,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:15,101 INFO L225 Difference]: With dead ends: 192 [2021-03-10 21:45:15,101 INFO L226 Difference]: Without dead ends: 172 [2021-03-10 21:45:15,102 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-03-10 21:45:15,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 138. [2021-03-10 21:45:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.927007299270073) internal successors, (401), 137 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 401 transitions. [2021-03-10 21:45:15,104 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 401 transitions. Word has length 15 [2021-03-10 21:45:15,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:15,105 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 401 transitions. [2021-03-10 21:45:15,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 401 transitions. [2021-03-10 21:45:15,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:15,105 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:15,105 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:15,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:15,319 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:15,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:15,319 INFO L82 PathProgramCache]: Analyzing trace with hash -886595830, now seen corresponding path program 5 times [2021-03-10 21:45:15,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:15,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857363954] [2021-03-10 21:45:15,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:15,364 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 21:45:15,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857363954] [2021-03-10 21:45:15,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314764087] [2021-03-10 21:45:15,365 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 21:45:15,385 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:15,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:15,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:15,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:15,463 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 21:45:15,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:15,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-03-10 21:45:15,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789315326] [2021-03-10 21:45:15,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 21:45:15,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:15,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 21:45:15,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:45:15,464 INFO L87 Difference]: Start difference. First operand 138 states and 401 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:15,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:15,592 INFO L93 Difference]: Finished difference Result 165 states and 444 transitions. [2021-03-10 21:45:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:15,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:15,593 INFO L225 Difference]: With dead ends: 165 [2021-03-10 21:45:15,593 INFO L226 Difference]: Without dead ends: 150 [2021-03-10 21:45:15,593 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:45:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-03-10 21:45:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 136. [2021-03-10 21:45:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.9407407407407407) internal successors, (397), 135 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 397 transitions. [2021-03-10 21:45:15,596 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 397 transitions. Word has length 15 [2021-03-10 21:45:15,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:15,596 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 397 transitions. [2021-03-10 21:45:15,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:15,597 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 397 transitions. [2021-03-10 21:45:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:15,598 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:15,598 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:15,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:15,813 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:15,813 INFO L82 PathProgramCache]: Analyzing trace with hash 981607308, now seen corresponding path program 6 times [2021-03-10 21:45:15,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:15,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805764103] [2021-03-10 21:45:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:15,862 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 21:45:15,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805764103] [2021-03-10 21:45:15,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766515317] [2021-03-10 21:45:15,863 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 21:45:15,885 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 21:45:15,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:15,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:15,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:15,968 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 21:45:15,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:15,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-03-10 21:45:15,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959649200] [2021-03-10 21:45:15,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:15,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:15,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:15,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:15,969 INFO L87 Difference]: Start difference. First operand 136 states and 397 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:16,278 INFO L93 Difference]: Finished difference Result 223 states and 580 transitions. [2021-03-10 21:45:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 21:45:16,279 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have 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 21:45:16,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:16,279 INFO L225 Difference]: With dead ends: 223 [2021-03-10 21:45:16,279 INFO L226 Difference]: Without dead ends: 191 [2021-03-10 21:45:16,280 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 225.5ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:45:16,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-03-10 21:45:16,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 137. [2021-03-10 21:45:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 2.9558823529411766) internal successors, (402), 136 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 402 transitions. [2021-03-10 21:45:16,282 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 402 transitions. Word has length 15 [2021-03-10 21:45:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:16,282 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 402 transitions. [2021-03-10 21:45:16,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 402 transitions. [2021-03-10 21:45:16,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:16,283 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:16,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:16,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-03-10 21:45:16,497 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:16,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:16,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1341646634, now seen corresponding path program 7 times [2021-03-10 21:45:16,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:16,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402485537] [2021-03-10 21:45:16,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:16,536 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 21:45:16,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402485537] [2021-03-10 21:45:16,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880673357] [2021-03-10 21:45:16,536 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 21:45:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:16,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:16,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:16,645 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 21:45:16,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:16,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-03-10 21:45:16,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824299689] [2021-03-10 21:45:16,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:16,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:16,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:16,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:16,648 INFO L87 Difference]: Start difference. First operand 137 states and 402 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:16,756 INFO L93 Difference]: Finished difference Result 182 states and 485 transitions. [2021-03-10 21:45:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:16,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have 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 21:45:16,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:16,757 INFO L225 Difference]: With dead ends: 182 [2021-03-10 21:45:16,757 INFO L226 Difference]: Without dead ends: 175 [2021-03-10 21:45:16,758 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:45:16,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-03-10 21:45:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 140. [2021-03-10 21:45:16,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.9784172661870505) internal successors, (414), 139 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 414 transitions. [2021-03-10 21:45:16,762 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 414 transitions. Word has length 15 [2021-03-10 21:45:16,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:16,762 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 414 transitions. [2021-03-10 21:45:16,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:16,762 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 414 transitions. [2021-03-10 21:45:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:16,765 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:16,765 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:16,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-03-10 21:45:16,980 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:16,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:16,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1273184878, now seen corresponding path program 12 times [2021-03-10 21:45:16,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:16,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569223499] [2021-03-10 21:45:16,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:17,028 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 21:45:17,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569223499] [2021-03-10 21:45:17,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237843308] [2021-03-10 21:45:17,028 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:17,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 21:45:17,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:17,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:17,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:17,113 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 21:45:17,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:17,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-03-10 21:45:17,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553068664] [2021-03-10 21:45:17,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:45:17,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:17,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:45:17,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:17,115 INFO L87 Difference]: Start difference. First operand 140 states and 414 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:17,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:17,232 INFO L93 Difference]: Finished difference Result 222 states and 585 transitions. [2021-03-10 21:45:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:17,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:17,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:17,233 INFO L225 Difference]: With dead ends: 222 [2021-03-10 21:45:17,233 INFO L226 Difference]: Without dead ends: 211 [2021-03-10 21:45:17,234 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 85.0ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:45:17,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-03-10 21:45:17,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 142. [2021-03-10 21:45:17,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.0141843971631204) internal successors, (425), 141 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 425 transitions. [2021-03-10 21:45:17,236 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 425 transitions. Word has length 15 [2021-03-10 21:45:17,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:17,236 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 425 transitions. [2021-03-10 21:45:17,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:17,237 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 425 transitions. [2021-03-10 21:45:17,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:17,237 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:17,237 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:17,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2021-03-10 21:45:17,451 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:17,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:17,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1876876436, now seen corresponding path program 8 times [2021-03-10 21:45:17,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:17,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207374714] [2021-03-10 21:45:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:17,511 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 21:45:17,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207374714] [2021-03-10 21:45:17,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564992714] [2021-03-10 21:45:17,511 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 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 21:45:17,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:17,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:17,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:17,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:17,611 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 21:45:17,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:17,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-03-10 21:45:17,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889340047] [2021-03-10 21:45:17,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:45:17,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:17,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:45:17,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:17,612 INFO L87 Difference]: Start difference. First operand 142 states and 425 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:17,714 INFO L93 Difference]: Finished difference Result 172 states and 476 transitions. [2021-03-10 21:45:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:17,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have 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 21:45:17,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:17,716 INFO L225 Difference]: With dead ends: 172 [2021-03-10 21:45:17,716 INFO L226 Difference]: Without dead ends: 163 [2021-03-10 21:45:17,716 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:45:17,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-03-10 21:45:17,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 141. [2021-03-10 21:45:17,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 3.007142857142857) internal successors, (421), 140 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 21:45:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 421 transitions. [2021-03-10 21:45:17,719 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 421 transitions. Word has length 15 [2021-03-10 21:45:17,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:17,719 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 421 transitions. [2021-03-10 21:45:17,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 421 transitions. [2021-03-10 21:45:17,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:17,719 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:17,719 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:17,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-03-10 21:45:17,934 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:17,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:17,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1270559102, now seen corresponding path program 13 times [2021-03-10 21:45:17,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:17,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42016078] [2021-03-10 21:45:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:17,969 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 21:45:17,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42016078] [2021-03-10 21:45:17,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360354381] [2021-03-10 21:45:17,969 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 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 21:45:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:17,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:18,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:18,060 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 21:45:18,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:18,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-03-10 21:45:18,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916406922] [2021-03-10 21:45:18,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 21:45:18,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:18,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 21:45:18,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:45:18,061 INFO L87 Difference]: Start difference. First operand 141 states and 421 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:18,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:18,167 INFO L93 Difference]: Finished difference Result 205 states and 556 transitions. [2021-03-10 21:45:18,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:18,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:18,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:18,168 INFO L225 Difference]: With dead ends: 205 [2021-03-10 21:45:18,168 INFO L226 Difference]: Without dead ends: 194 [2021-03-10 21:45:18,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:45:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-03-10 21:45:18,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 141. [2021-03-10 21:45:18,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 2.9785714285714286) internal successors, (417), 140 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 417 transitions. [2021-03-10 21:45:18,171 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 417 transitions. Word has length 15 [2021-03-10 21:45:18,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:18,171 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 417 transitions. [2021-03-10 21:45:18,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 417 transitions. [2021-03-10 21:45:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:18,171 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:18,171 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:18,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-03-10 21:45:18,386 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:18,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:18,387 INFO L82 PathProgramCache]: Analyzing trace with hash 647834570, now seen corresponding path program 9 times [2021-03-10 21:45:18,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:18,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604511926] [2021-03-10 21:45:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:18,418 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 21:45:18,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604511926] [2021-03-10 21:45:18,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437804515] [2021-03-10 21:45:18,418 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 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 21:45:18,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:45:18,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:18,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:18,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:18,498 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 21:45:18,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:18,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-03-10 21:45:18,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344899271] [2021-03-10 21:45:18,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 21:45:18,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:18,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 21:45:18,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:18,499 INFO L87 Difference]: Start difference. First operand 141 states and 417 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:18,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:18,751 INFO L93 Difference]: Finished difference Result 220 states and 577 transitions. [2021-03-10 21:45:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 21:45:18,751 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have 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 21:45:18,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:18,752 INFO L225 Difference]: With dead ends: 220 [2021-03-10 21:45:18,752 INFO L226 Difference]: Without dead ends: 183 [2021-03-10 21:45:18,752 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 186.2ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-03-10 21:45:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-03-10 21:45:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 136. [2021-03-10 21:45:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.948148148148148) internal successors, (398), 135 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 398 transitions. [2021-03-10 21:45:18,755 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 398 transitions. Word has length 15 [2021-03-10 21:45:18,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:18,755 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 398 transitions. [2021-03-10 21:45:18,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 398 transitions. [2021-03-10 21:45:18,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:18,755 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:18,755 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:18,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:18,970 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:18,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:18,970 INFO L82 PathProgramCache]: Analyzing trace with hash 716296326, now seen corresponding path program 14 times [2021-03-10 21:45:18,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:18,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293036030] [2021-03-10 21:45:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:19,008 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 21:45:19,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293036030] [2021-03-10 21:45:19,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663310822] [2021-03-10 21:45:19,008 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 21:45:19,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:19,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:19,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:19,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:19,094 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 21:45:19,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:19,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-03-10 21:45:19,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486104018] [2021-03-10 21:45:19,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:45:19,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:19,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:45:19,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:19,095 INFO L87 Difference]: Start difference. First operand 136 states and 398 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:19,184 INFO L93 Difference]: Finished difference Result 180 states and 499 transitions. [2021-03-10 21:45:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:19,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:19,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:19,186 INFO L225 Difference]: With dead ends: 180 [2021-03-10 21:45:19,186 INFO L226 Difference]: Without dead ends: 169 [2021-03-10 21:45:19,186 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:45:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-03-10 21:45:19,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2021-03-10 21:45:19,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 2.9477611940298507) internal successors, (395), 134 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 395 transitions. [2021-03-10 21:45:19,188 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 395 transitions. Word has length 15 [2021-03-10 21:45:19,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:19,188 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 395 transitions. [2021-03-10 21:45:19,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 395 transitions. [2021-03-10 21:45:19,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:19,189 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:19,189 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:19,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-03-10 21:45:19,389 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:19,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:19,390 INFO L82 PathProgramCache]: Analyzing trace with hash 209950060, now seen corresponding path program 15 times [2021-03-10 21:45:19,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:19,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879172251] [2021-03-10 21:45:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:19,423 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 21:45:19,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879172251] [2021-03-10 21:45:19,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998928277] [2021-03-10 21:45:19,423 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 21:45:19,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:45:19,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:19,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:19,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:19,524 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 21:45:19,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:19,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-03-10 21:45:19,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644815706] [2021-03-10 21:45:19,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 21:45:19,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:19,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 21:45:19,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:19,525 INFO L87 Difference]: Start difference. First operand 135 states and 395 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:19,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:19,650 INFO L93 Difference]: Finished difference Result 197 states and 527 transitions. [2021-03-10 21:45:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:19,650 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:19,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:19,651 INFO L225 Difference]: With dead ends: 197 [2021-03-10 21:45:19,651 INFO L226 Difference]: Without dead ends: 186 [2021-03-10 21:45:19,651 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:45:19,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-03-10 21:45:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 134. [2021-03-10 21:45:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.9473684210526314) internal successors, (392), 133 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 392 transitions. [2021-03-10 21:45:19,654 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 392 transitions. Word has length 15 [2021-03-10 21:45:19,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:19,654 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 392 transitions. [2021-03-10 21:45:19,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:19,654 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 392 transitions. [2021-03-10 21:45:19,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:19,654 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:19,654 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:19,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:19,855 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:19,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:19,855 INFO L82 PathProgramCache]: Analyzing trace with hash 524208692, now seen corresponding path program 10 times [2021-03-10 21:45:19,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:19,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007589243] [2021-03-10 21:45:19,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:19,890 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 21:45:19,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007589243] [2021-03-10 21:45:19,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008328123] [2021-03-10 21:45:19,890 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 21:45:19,909 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:45:19,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:19,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:19,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:19,972 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 21:45:19,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:19,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-03-10 21:45:19,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260772642] [2021-03-10 21:45:19,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 21:45:19,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:19,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 21:45:19,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:45:19,975 INFO L87 Difference]: Start difference. First operand 134 states and 392 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:20,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:20,078 INFO L93 Difference]: Finished difference Result 180 states and 469 transitions. [2021-03-10 21:45:20,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:20,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:20,087 INFO L225 Difference]: With dead ends: 180 [2021-03-10 21:45:20,087 INFO L226 Difference]: Without dead ends: 172 [2021-03-10 21:45:20,087 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:45:20,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-03-10 21:45:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 133. [2021-03-10 21:45:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.946969696969697) internal successors, (389), 132 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:20,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 389 transitions. [2021-03-10 21:45:20,090 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 389 transitions. Word has length 15 [2021-03-10 21:45:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:20,090 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 389 transitions. [2021-03-10 21:45:20,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:20,090 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 389 transitions. [2021-03-10 21:45:20,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:20,091 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:20,091 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:20,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-03-10 21:45:20,306 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:20,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:20,306 INFO L82 PathProgramCache]: Analyzing trace with hash 22578118, now seen corresponding path program 11 times [2021-03-10 21:45:20,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:20,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892246430] [2021-03-10 21:45:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:20,332 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 21:45:20,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892246430] [2021-03-10 21:45:20,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975665388] [2021-03-10 21:45:20,333 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 21:45:20,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:20,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:20,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:20,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:20,402 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 21:45:20,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:20,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-03-10 21:45:20,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984330146] [2021-03-10 21:45:20,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:45:20,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:20,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:45:20,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:45:20,404 INFO L87 Difference]: Start difference. First operand 133 states and 389 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:20,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:20,482 INFO L93 Difference]: Finished difference Result 154 states and 429 transitions. [2021-03-10 21:45:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 21:45:20,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have 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 21:45:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:20,483 INFO L225 Difference]: With dead ends: 154 [2021-03-10 21:45:20,483 INFO L226 Difference]: Without dead ends: 130 [2021-03-10 21:45:20,484 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 67.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-03-10 21:45:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-03-10 21:45:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.9224806201550386) internal successors, (377), 129 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 377 transitions. [2021-03-10 21:45:20,486 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 377 transitions. Word has length 15 [2021-03-10 21:45:20,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:20,486 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 377 transitions. [2021-03-10 21:45:20,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:20,486 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 377 transitions. [2021-03-10 21:45:20,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-10 21:45:20,486 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:20,486 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:20,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-03-10 21:45:20,694 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:20,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:20,694 INFO L82 PathProgramCache]: Analyzing trace with hash 212575836, now seen corresponding path program 16 times [2021-03-10 21:45:20,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:20,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99017879] [2021-03-10 21:45:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:20,794 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 21:45:20,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99017879] [2021-03-10 21:45:20,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442298818] [2021-03-10 21:45:20,795 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-10 21:45:20,825 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:45:20,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:20,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 21:45:20,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:20,872 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 21:45:20,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:20,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-03-10 21:45:20,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608875698] [2021-03-10 21:45:20,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 21:45:20,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:20,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 21:45:20,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:45:20,873 INFO L87 Difference]: Start difference. First operand 130 states and 377 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:20,968 INFO L93 Difference]: Finished difference Result 180 states and 499 transitions. [2021-03-10 21:45:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 21:45:20,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:20,969 INFO L225 Difference]: With dead ends: 180 [2021-03-10 21:45:20,969 INFO L226 Difference]: Without dead ends: 169 [2021-03-10 21:45:20,969 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-03-10 21:45:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-03-10 21:45:20,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 119. [2021-03-10 21:45:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 2.9237288135593222) internal successors, (345), 118 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 345 transitions. [2021-03-10 21:45:20,971 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 345 transitions. Word has length 15 [2021-03-10 21:45:20,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:20,971 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 345 transitions. [2021-03-10 21:45:20,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:20,971 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 345 transitions. [2021-03-10 21:45:20,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 21:45:20,972 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:20,972 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:21,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:21,172 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:21,172 INFO L82 PathProgramCache]: Analyzing trace with hash 907579970, now seen corresponding path program 1 times [2021-03-10 21:45:21,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:21,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046436160] [2021-03-10 21:45:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 21:45:21,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046436160] [2021-03-10 21:45:21,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267199763] [2021-03-10 21:45:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order 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 21:45:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:21,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:21,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 21:45:21,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:21,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-03-10 21:45:21,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943260048] [2021-03-10 21:45:21,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 21:45:21,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:21,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 21:45:21,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-10 21:45:21,289 INFO L87 Difference]: Start difference. First operand 119 states and 345 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 21:45:21,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:21,362 INFO L93 Difference]: Finished difference Result 161 states and 443 transitions. [2021-03-10 21:45:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 21:45:21,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 16 [2021-03-10 21:45:21,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:21,363 INFO L225 Difference]: With dead ends: 161 [2021-03-10 21:45:21,364 INFO L226 Difference]: Without dead ends: 148 [2021-03-10 21:45:21,364 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 21:45:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-03-10 21:45:21,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2021-03-10 21:45:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.926829268292683) internal successors, (360), 123 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 360 transitions. [2021-03-10 21:45:21,366 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 360 transitions. Word has length 16 [2021-03-10 21:45:21,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:21,366 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 360 transitions. [2021-03-10 21:45:21,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 21:45:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 360 transitions. [2021-03-10 21:45:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 21:45:21,366 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:21,366 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 21:45:21,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-03-10 21:45:21,575 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:21,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:21,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1153279832, now seen corresponding path program 2 times [2021-03-10 21:45:21,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:21,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996652839] [2021-03-10 21:45:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 21:45:21,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996652839] [2021-03-10 21:45:21,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018335514] [2021-03-10 21:45:21,608 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 21:45:21,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:21,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:21,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-10 21:45:21,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-10 21:45:21,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:21,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-03-10 21:45:21,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148192105] [2021-03-10 21:45:21,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 21:45:21,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:21,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 21:45:21,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 21:45:21,689 INFO L87 Difference]: Start difference. First operand 124 states and 360 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:21,764 INFO L93 Difference]: Finished difference Result 156 states and 442 transitions. [2021-03-10 21:45:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 21:45:21,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have 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 21:45:21,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:21,765 INFO L225 Difference]: With dead ends: 156 [2021-03-10 21:45:21,765 INFO L226 Difference]: Without dead ends: 143 [2021-03-10 21:45:21,765 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 53.3ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-10 21:45:21,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-03-10 21:45:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 108. [2021-03-10 21:45:21,767 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 21:45:21,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 308 transitions. [2021-03-10 21:45:21,767 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 308 transitions. Word has length 16 [2021-03-10 21:45:21,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:21,768 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 308 transitions. [2021-03-10 21:45:21,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:21,768 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 308 transitions. [2021-03-10 21:45:21,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:45:21,768 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:21,768 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 21:45:21,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:21,971 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:21,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:21,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1638627788, now seen corresponding path program 1 times [2021-03-10 21:45:21,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:21,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24752470] [2021-03-10 21:45:21,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:22,289 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 21:45:22,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24752470] [2021-03-10 21:45:22,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250575395] [2021-03-10 21:45:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) [2021-03-10 21:45:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:22,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:45:22,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:22,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:22,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:22,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:45:22,541 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:22,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:22,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:45:22,547 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:22,579 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:22,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:22,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:22,585 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 27 treesize of output 21 [2021-03-10 21:45:22,587 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:22,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:22,594 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 25 treesize of output 19 [2021-03-10 21:45:22,595 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:22,631 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:22,641 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:45:22,641 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:123, output treesize:111 [2021-03-10 21:45:23,017 INFO L446 ElimStorePlain]: Different costs {1=[array_4], 15=[array_0]} [2021-03-10 21:45:23,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:45:23,026 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:45:23,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,033 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 18 treesize of output 14 [2021-03-10 21:45:23,034 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,040 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 17 treesize of output 13 [2021-03-10 21:45:23,041 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 29 [2021-03-10 21:45:23,050 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:23,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:23,059 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:23,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,080 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 21:45:23,081 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:23,089 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,096 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 28 treesize of output 22 [2021-03-10 21:45:23,097 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:23,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:23,106 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:23,115 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,392 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2021-03-10 21:45:23,393 INFO L628 ElimStorePlain]: treesize reduction 148, result has 71.4 percent of original size [2021-03-10 21:45:23,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:23,409 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:45:23,418 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,427 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:23,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:45:23,435 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:45:23,444 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:45:23,452 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 11 [2021-03-10 21:45:23,460 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:45:23,468 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,479 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:23,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,486 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 21 treesize of output 7 [2021-03-10 21:45:23,487 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:45:23,494 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,504 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:23,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,513 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 24 treesize of output 9 [2021-03-10 21:45:23,514 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:23,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:45:23,520 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:23,532 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:23,642 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 21:45:23,642 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:23,650 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:45:23,650 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 7 variables, input treesize:419, output treesize:179 [2021-03-10 21:45:23,806 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-03-10 21:45:23,876 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 21:45:23,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:23,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:45:23,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959173711] [2021-03-10 21:45:23,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:45:23,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:23,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:45:23,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:45:23,877 INFO L87 Difference]: Start difference. First operand 108 states and 308 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:24,434 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2021-03-10 21:45:24,717 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2021-03-10 21:45:25,068 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2021-03-10 21:45:25,276 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2021-03-10 21:45:25,519 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2021-03-10 21:45:25,853 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 125 [2021-03-10 21:45:26,109 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2021-03-10 21:45:26,363 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2021-03-10 21:45:26,709 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 128 [2021-03-10 21:45:26,971 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2021-03-10 21:45:27,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:27,063 INFO L93 Difference]: Finished difference Result 294 states and 803 transitions. [2021-03-10 21:45:27,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-10 21:45:27,063 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:45:27,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:27,064 INFO L225 Difference]: With dead ends: 294 [2021-03-10 21:45:27,064 INFO L226 Difference]: Without dead ends: 286 [2021-03-10 21:45:27,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 3309.7ms TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2021-03-10 21:45:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-03-10 21:45:27,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 143. [2021-03-10 21:45:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.936619718309859) internal successors, (417), 142 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:27,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 417 transitions. [2021-03-10 21:45:27,067 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 417 transitions. Word has length 17 [2021-03-10 21:45:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:27,068 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 417 transitions. [2021-03-10 21:45:27,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:27,068 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 417 transitions. [2021-03-10 21:45:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:45:27,068 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:27,068 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 21:45:27,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:27,271 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:27,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:27,271 INFO L82 PathProgramCache]: Analyzing trace with hash -310438566, now seen corresponding path program 2 times [2021-03-10 21:45:27,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:27,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871427495] [2021-03-10 21:45:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:27,574 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 21:45:27,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871427495] [2021-03-10 21:45:27,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433295922] [2021-03-10 21:45:27,575 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 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 21:45:27,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:27,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:27,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:45:27,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:27,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:27,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:27,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:45:27,953 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:27,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:27,957 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 25 treesize of output 19 [2021-03-10 21:45:27,958 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,122 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-03-10 21:45:28,123 INFO L628 ElimStorePlain]: treesize reduction 35, result has 80.7 percent of original size [2021-03-10 21:45:28,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,127 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 17 treesize of output 13 [2021-03-10 21:45:28,128 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,173 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:28,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:28,179 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:28,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:28,184 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:28,236 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 5 dim-0 vars, and 5 xjuncts. [2021-03-10 21:45:28,236 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:195, output treesize:141 [2021-03-10 21:45:28,458 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_19, array_4, v_prenex_17], 1=[array_0, v_prenex_18, v_prenex_16]} [2021-03-10 21:45:28,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:45:28,463 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:45:28,468 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,596 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-03-10 21:45:28,597 INFO L628 ElimStorePlain]: treesize reduction 31, result has 86.1 percent of original size [2021-03-10 21:45:28,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:28,603 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:28,667 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:28,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:28,672 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,677 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 29 treesize of output 23 [2021-03-10 21:45:28,678 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,682 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 18 treesize of output 14 [2021-03-10 21:45:28,684 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,687 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 20 treesize of output 16 [2021-03-10 21:45:28,688 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,739 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:28,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,744 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 11 treesize of output 3 [2021-03-10 21:45:28,745 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:45:28,749 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:28,805 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:28,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:28,810 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:45:28,814 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,866 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:28,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:45:28,872 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:45:28,877 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,881 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 20 treesize of output 9 [2021-03-10 21:45:28,882 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:28,885 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 12 treesize of output 5 [2021-03-10 21:45:28,886 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:28,930 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:28,936 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 6 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:45:28,937 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 9 variables, input treesize:237, output treesize:57 [2021-03-10 21:45:28,990 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 21:45:28,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:28,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:45:28,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173944384] [2021-03-10 21:45:28,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:45:28,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:28,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:45:28,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:45:28,991 INFO L87 Difference]: Start difference. First operand 143 states and 417 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:29,424 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2021-03-10 21:45:29,642 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2021-03-10 21:45:29,957 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2021-03-10 21:45:30,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:30,141 INFO L93 Difference]: Finished difference Result 229 states and 646 transitions. [2021-03-10 21:45:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:45:30,141 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:45:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:30,142 INFO L225 Difference]: With dead ends: 229 [2021-03-10 21:45:30,142 INFO L226 Difference]: Without dead ends: 225 [2021-03-10 21:45:30,142 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1421.3ms TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:45:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-03-10 21:45:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 148. [2021-03-10 21:45:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.9183673469387754) internal successors, (429), 147 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 429 transitions. [2021-03-10 21:45:30,145 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 429 transitions. Word has length 17 [2021-03-10 21:45:30,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:30,145 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 429 transitions. [2021-03-10 21:45:30,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:30,145 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 429 transitions. [2021-03-10 21:45:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:45:30,146 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:30,146 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 21:45:30,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:30,361 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:30,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1170799304, now seen corresponding path program 3 times [2021-03-10 21:45:30,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:30,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973517617] [2021-03-10 21:45:30,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:30,510 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 21:45:30,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973517617] [2021-03-10 21:45:30,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733203002] [2021-03-10 21:45:30,511 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 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 21:45:30,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:45:30,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:30,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:45:30,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:30,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:45:30,766 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:30,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:45:30,770 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:30,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 25 [2021-03-10 21:45:30,776 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:30,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:45:30,781 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:30,784 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 17 treesize of output 13 [2021-03-10 21:45:30,785 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:30,788 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 17 treesize of output 13 [2021-03-10 21:45:30,790 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:30,861 INFO L628 ElimStorePlain]: treesize reduction 20, result has 86.2 percent of original size [2021-03-10 21:45:30,862 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:45:30,862 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:167, output treesize:125 [2021-03-10 21:45:30,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:30,973 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:31,042 INFO L628 ElimStorePlain]: treesize reduction 46, result has 74.2 percent of original size [2021-03-10 21:45:31,042 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:45:31,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:45:31,046 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:31,087 INFO L628 ElimStorePlain]: treesize reduction 33, result has 71.6 percent of original size [2021-03-10 21:45:31,087 INFO L518 ElimStorePlain]: Eliminatee v_prenex_24 vanished before elimination [2021-03-10 21:45:31,089 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 21 treesize of output 17 [2021-03-10 21:45:31,090 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:31,092 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 28 treesize of output 22 [2021-03-10 21:45:31,094 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:31,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:45:31,096 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:31,122 INFO L628 ElimStorePlain]: treesize reduction 5, result has 83.9 percent of original size [2021-03-10 21:45:31,122 INFO L518 ElimStorePlain]: Eliminatee v_prenex_26 vanished before elimination [2021-03-10 21:45:31,123 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:45:31,123 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:187, output treesize:26 [2021-03-10 21:45:31,162 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 21:45:31,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:31,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-03-10 21:45:31,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886025812] [2021-03-10 21:45:31,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:45:31,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:31,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:45:31,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:45:31,163 INFO L87 Difference]: Start difference. First operand 148 states and 429 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:31,514 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-03-10 21:45:31,679 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-03-10 21:45:31,939 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2021-03-10 21:45:32,075 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-03-10 21:45:32,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:32,122 INFO L93 Difference]: Finished difference Result 228 states and 644 transitions. [2021-03-10 21:45:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:45:32,122 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:45:32,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:32,123 INFO L225 Difference]: With dead ends: 228 [2021-03-10 21:45:32,123 INFO L226 Difference]: Without dead ends: 224 [2021-03-10 21:45:32,123 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1059.0ms TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:45:32,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-03-10 21:45:32,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 152. [2021-03-10 21:45:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.9072847682119205) internal successors, (439), 151 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 439 transitions. [2021-03-10 21:45:32,126 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 439 transitions. Word has length 17 [2021-03-10 21:45:32,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:32,126 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 439 transitions. [2021-03-10 21:45:32,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 439 transitions. [2021-03-10 21:45:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:45:32,126 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:32,126 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 21:45:32,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2021-03-10 21:45:32,339 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:32,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:32,339 INFO L82 PathProgramCache]: Analyzing trace with hash 227417012, now seen corresponding path program 4 times [2021-03-10 21:45:32,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:32,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683398164] [2021-03-10 21:45:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:32,675 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 21:45:32,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683398164] [2021-03-10 21:45:32,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709934590] [2021-03-10 21:45:32,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:32,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:45:32,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:32,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:45:32,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:32,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:32,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:32,927 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 25 treesize of output 19 [2021-03-10 21:45:32,928 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:32,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:32,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:32,933 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:32,982 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:32,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:32,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:32,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:45:32,988 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:32,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:32,992 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 17 treesize of output 13 [2021-03-10 21:45:32,992 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,051 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:33,063 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:45:33,064 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:155, output treesize:143 [2021-03-10 21:45:33,338 INFO L446 ElimStorePlain]: Different costs {1=[array_4], 36=[array_0]} [2021-03-10 21:45:33,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,346 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 21:45:33,347 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,354 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 27 treesize of output 21 [2021-03-10 21:45:33,355 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:45:33,362 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2021-03-10 21:45:33,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 29 [2021-03-10 21:45:33,371 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:33,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:45:33,383 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:33,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,390 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 27 treesize of output 21 [2021-03-10 21:45:33,392 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:33,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:45:33,400 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:33,409 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:45:33,418 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:33,425 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,716 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 86 [2021-03-10 21:45:33,716 INFO L628 ElimStorePlain]: treesize reduction 154, result has 70.3 percent of original size [2021-03-10 21:45:33,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:45:33,722 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:45:33,730 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:45:33,738 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,744 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 24 treesize of output 9 [2021-03-10 21:45:33,745 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,758 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:33,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:45:33,766 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,773 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 23 treesize of output 11 [2021-03-10 21:45:33,774 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,785 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:33,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,791 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 21 treesize of output 7 [2021-03-10 21:45:33,792 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,798 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 11 treesize of output 3 [2021-03-10 21:45:33,799 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,809 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:33,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:45:33,816 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:33,823 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:33,827 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 21 treesize of output 7 [2021-03-10 21:45:33,828 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:33,837 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:33,944 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 21:45:33,944 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:33,948 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:45:33,948 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 10 variables, input treesize:419, output treesize:179 [2021-03-10 21:45:34,104 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-03-10 21:45:34,173 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 21:45:34,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:34,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:45:34,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477069646] [2021-03-10 21:45:34,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:45:34,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:34,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:45:34,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:45:34,174 INFO L87 Difference]: Start difference. First operand 152 states and 439 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:34,990 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-10 21:45:35,231 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 103 [2021-03-10 21:45:35,428 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2021-03-10 21:45:35,645 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-03-10 21:45:35,859 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-03-10 21:45:36,030 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-03-10 21:45:36,253 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2021-03-10 21:45:36,479 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-03-10 21:45:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:36,539 INFO L93 Difference]: Finished difference Result 261 states and 746 transitions. [2021-03-10 21:45:36,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 21:45:36,540 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:45:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:36,541 INFO L225 Difference]: With dead ends: 261 [2021-03-10 21:45:36,541 INFO L226 Difference]: Without dead ends: 257 [2021-03-10 21:45:36,541 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2509.7ms TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2021-03-10 21:45:36,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-03-10 21:45:36,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 158. [2021-03-10 21:45:36,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.910828025477707) internal successors, (457), 157 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:36,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 457 transitions. [2021-03-10 21:45:36,544 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 457 transitions. Word has length 17 [2021-03-10 21:45:36,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:36,544 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 457 transitions. [2021-03-10 21:45:36,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:36,544 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 457 transitions. [2021-03-10 21:45:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:45:36,544 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:36,544 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 21:45:36,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable247 [2021-03-10 21:45:36,759 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:36,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:36,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1708654882, now seen corresponding path program 5 times [2021-03-10 21:45:36,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:36,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364051366] [2021-03-10 21:45:36,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:36,902 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 21:45:36,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364051366] [2021-03-10 21:45:36,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742682214] [2021-03-10 21:45:36,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:36,924 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:45:36,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:36,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:45:36,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:37,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:37,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:37,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:37,142 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:37,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:37,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:37,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:45:37,149 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:45:37,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:37,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:37,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:45:37,155 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:37,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:37,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:37,161 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:37,241 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:37,249 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:45:37,250 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:181, output treesize:241 [2021-03-10 21:45:37,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:37,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:37,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:37,535 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:37,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:37,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:37,542 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:37,869 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2021-03-10 21:45:37,870 INFO L628 ElimStorePlain]: treesize reduction 229, result has 63.4 percent of original size [2021-03-10 21:45:37,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:37,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:37,877 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:38,011 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-10 21:45:38,012 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:38,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:45:38,020 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,025 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 20 treesize of output 9 [2021-03-10 21:45:38,026 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,035 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:38,165 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-03-10 21:45:38,165 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:38,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:45:38,171 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,299 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-10 21:45:38,299 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:38,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,305 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 28 treesize of output 22 [2021-03-10 21:45:38,306 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:45:38,313 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,318 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:45:38,319 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,324 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 28 treesize of output 22 [2021-03-10 21:45:38,325 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,330 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 24 [2021-03-10 21:45:38,331 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:45:38,338 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,540 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2021-03-10 21:45:38,541 INFO L628 ElimStorePlain]: treesize reduction 21, result has 93.1 percent of original size [2021-03-10 21:45:38,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:45:38,550 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:45:38,556 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:45:38,562 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:45:38,571 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:45:38,576 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,665 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:38,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:38,671 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 21 treesize of output 7 [2021-03-10 21:45:38,672 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:38,677 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:38,687 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:38,779 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:38,779 INFO L518 ElimStorePlain]: Eliminatee v_prenex_48 vanished before elimination [2021-03-10 21:45:38,782 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 21:45:38,783 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 12 variables, input treesize:621, output treesize:139 [2021-03-10 21:45:38,945 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 21:45:38,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:38,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:45:38,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922955790] [2021-03-10 21:45:38,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:45:38,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:38,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:45:38,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:45:38,946 INFO L87 Difference]: Start difference. First operand 158 states and 457 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:39,994 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2021-03-10 21:45:40,180 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2021-03-10 21:45:40,554 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2021-03-10 21:45:40,782 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-03-10 21:45:41,187 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2021-03-10 21:45:41,424 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-10 21:45:41,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:41,490 INFO L93 Difference]: Finished difference Result 281 states and 774 transitions. [2021-03-10 21:45:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 21:45:41,490 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:45:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:41,491 INFO L225 Difference]: With dead ends: 281 [2021-03-10 21:45:41,491 INFO L226 Difference]: Without dead ends: 269 [2021-03-10 21:45:41,492 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2411.7ms TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-03-10 21:45:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-03-10 21:45:41,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 161. [2021-03-10 21:45:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 2.93125) internal successors, (469), 160 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 469 transitions. [2021-03-10 21:45:41,494 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 469 transitions. Word has length 17 [2021-03-10 21:45:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:41,495 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 469 transitions. [2021-03-10 21:45:41,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 469 transitions. [2021-03-10 21:45:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:45:41,495 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:41,495 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 21:45:41,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:41,710 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:41,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:41,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1137200076, now seen corresponding path program 6 times [2021-03-10 21:45:41,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:41,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920153593] [2021-03-10 21:45:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:41,945 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 21:45:41,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920153593] [2021-03-10 21:45:41,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234969411] [2021-03-10 21:45:41,945 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:41,967 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:45:41,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:41,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:45:41,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:42,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:42,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:42,194 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 25 treesize of output 19 [2021-03-10 21:45:42,195 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:42,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:42,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:42,201 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:42,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:42,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:42,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:42,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:45:42,267 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:42,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:42,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:45:42,272 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:42,326 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:42,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:42,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:42,330 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 15 treesize of output 11 [2021-03-10 21:45:42,331 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:42,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:42,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:45:42,337 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:42,389 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:42,396 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 6 xjuncts. [2021-03-10 21:45:42,396 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:169, output treesize:145 [2021-03-10 21:45:42,703 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_61, v_prenex_63, array_4, v_prenex_68, v_prenex_66, v_prenex_59], 1=[v_prenex_60, v_prenex_65, array_2, v_prenex_62, v_prenex_58, v_prenex_67]} [2021-03-10 21:45:42,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:42,711 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:42,717 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 17 treesize of output 13 [2021-03-10 21:45:42,718 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:42,988 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 86 [2021-03-10 21:45:42,988 INFO L628 ElimStorePlain]: treesize reduction 152, result has 58.7 percent of original size [2021-03-10 21:45:42,993 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 21 treesize of output 17 [2021-03-10 21:45:42,994 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:45:43,001 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,062 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:43,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:45:43,068 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,128 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:43,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:43,147 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:43,215 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:43,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:45:43,221 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,286 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:43,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:45:43,292 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:45:43,298 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,357 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:43,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:43,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:43,363 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,422 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:43,422 INFO L518 ElimStorePlain]: Eliminatee v_prenex_65 vanished before elimination [2021-03-10 21:45:43,422 INFO L518 ElimStorePlain]: Eliminatee array_2 vanished before elimination [2021-03-10 21:45:43,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:43,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:43,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:45:43,429 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:43,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:43,436 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,500 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:43,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:43,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:43,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:45:43,508 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:43,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:45:43,513 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,568 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:43,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:43,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:43,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:45:43,574 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:43,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:45:43,580 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:43,589 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:43,642 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:43,645 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:45:43,645 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 18 variables, input treesize:364, output treesize:62 [2021-03-10 21:45:43,708 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 21:45:43,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:43,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:45:43,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614064994] [2021-03-10 21:45:43,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:45:43,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:43,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:45:43,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:45:43,709 INFO L87 Difference]: Start difference. First operand 161 states and 469 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:44,144 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-03-10 21:45:44,411 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 99 [2021-03-10 21:45:44,964 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 128 [2021-03-10 21:45:45,296 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 109 [2021-03-10 21:45:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:45,391 INFO L93 Difference]: Finished difference Result 281 states and 779 transitions. [2021-03-10 21:45:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:45:45,391 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:45:45,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:45,392 INFO L225 Difference]: With dead ends: 281 [2021-03-10 21:45:45,392 INFO L226 Difference]: Without dead ends: 277 [2021-03-10 21:45:45,392 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1764.2ms TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:45:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-03-10 21:45:45,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 167. [2021-03-10 21:45:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.9156626506024095) internal successors, (484), 166 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 21:45:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 484 transitions. [2021-03-10 21:45:45,395 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 484 transitions. Word has length 17 [2021-03-10 21:45:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:45,395 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 484 transitions. [2021-03-10 21:45:45,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 484 transitions. [2021-03-10 21:45:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:45:45,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:45,396 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 21:45:45,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317,42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:45,618 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:45,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:45,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1272047358, now seen corresponding path program 7 times [2021-03-10 21:45:45,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:45,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927350281] [2021-03-10 21:45:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:45,877 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 21:45:45,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927350281] [2021-03-10 21:45:45,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263371127] [2021-03-10 21:45:45,878 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 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 21:45:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:45,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:45:45,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:46,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:46,086 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:46,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:46,091 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,145 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:46,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:45:46,151 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:45:46,157 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,207 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:46,213 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:45:46,213 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:155, output treesize:143 [2021-03-10 21:45:46,501 INFO L446 ElimStorePlain]: Different costs {1=[array_4], 36=[array_0]} [2021-03-10 21:45:46,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:46,510 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:46,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:45:46,517 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:45:46,525 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:46,532 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:45:46,540 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:46,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:46,548 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:46,557 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:45:46,565 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 29 [2021-03-10 21:45:46,573 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:46,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:45:46,581 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2021-03-10 21:45:46,857 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 86 [2021-03-10 21:45:46,858 INFO L628 ElimStorePlain]: treesize reduction 154, result has 70.3 percent of original size [2021-03-10 21:45:46,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:45:46,865 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:45:46,872 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,888 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:46,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:45:46,895 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,902 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 11 treesize of output 3 [2021-03-10 21:45:46,903 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,912 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:46,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:45:46,920 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,927 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 11 treesize of output 3 [2021-03-10 21:45:46,927 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,934 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 21 treesize of output 7 [2021-03-10 21:45:46,934 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,944 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:46,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,950 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 12 treesize of output 5 [2021-03-10 21:45:46,951 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,957 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 11 [2021-03-10 21:45:46,958 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,967 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:46,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,974 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 9 treesize of output 3 [2021-03-10 21:45:46,975 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:46,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:46,980 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 10 treesize of output 5 [2021-03-10 21:45:46,981 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:47,096 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 21:45:47,097 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:47,101 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:45:47,101 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 10 variables, input treesize:419, output treesize:179 [2021-03-10 21:45:47,274 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-03-10 21:45:47,350 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 21:45:47,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:47,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:45:47,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825687932] [2021-03-10 21:45:47,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:45:47,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:47,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:45:47,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:45:47,351 INFO L87 Difference]: Start difference. First operand 167 states and 484 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:48,014 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2021-03-10 21:45:48,232 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-03-10 21:45:48,440 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-03-10 21:45:48,686 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2021-03-10 21:45:48,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:48,765 INFO L93 Difference]: Finished difference Result 290 states and 824 transitions. [2021-03-10 21:45:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 21:45:48,766 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:45:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:48,767 INFO L225 Difference]: With dead ends: 290 [2021-03-10 21:45:48,767 INFO L226 Difference]: Without dead ends: 286 [2021-03-10 21:45:48,767 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1617.6ms TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-03-10 21:45:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-03-10 21:45:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 170. [2021-03-10 21:45:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.9171597633136095) internal successors, (493), 169 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 493 transitions. [2021-03-10 21:45:48,770 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 493 transitions. Word has length 17 [2021-03-10 21:45:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:48,770 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 493 transitions. [2021-03-10 21:45:48,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 493 transitions. [2021-03-10 21:45:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:45:48,770 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:48,770 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 21:45:48,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:48,971 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:48,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1541682068, now seen corresponding path program 8 times [2021-03-10 21:45:48,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:48,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701953173] [2021-03-10 21:45:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:49,231 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 21:45:49,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701953173] [2021-03-10 21:45:49,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338591783] [2021-03-10 21:45:49,231 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 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 21:45:49,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:45:49,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:49,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:45:49,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:49,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:49,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:49,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:45:49,467 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:49,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:49,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:49,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:49,473 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:49,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:49,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:49,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:45:49,480 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2021-03-10 21:45:49,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:49,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:49,487 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:49,564 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:49,584 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:45:49,584 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:179, output treesize:239 [2021-03-10 21:45:49,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:49,798 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 17 treesize of output 13 [2021-03-10 21:45:49,799 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:49,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:45:49,807 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,122 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2021-03-10 21:45:50,122 INFO L628 ElimStorePlain]: treesize reduction 235, result has 61.3 percent of original size [2021-03-10 21:45:50,123 INFO L518 ElimStorePlain]: Eliminatee v_prenex_82 vanished before elimination [2021-03-10 21:45:50,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:45:50,130 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,136 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:45:50,137 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:45:50,144 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:45:50,152 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:45:50,159 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:45:50,165 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,379 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2021-03-10 21:45:50,380 INFO L628 ElimStorePlain]: treesize reduction 21, result has 92.9 percent of original size [2021-03-10 21:45:50,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:45:50,387 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:45:50,394 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:45:50,401 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:45:50,408 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:50,414 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,507 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:50,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:50,513 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:50,611 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:50,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:50,617 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:50,720 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 21:45:50,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:50,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:45:50,728 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:45:50,733 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,742 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:50,843 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:45:50,843 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:50,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:50,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:45:50,849 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:50,854 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:50,864 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:50,961 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:50,964 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 21:45:50,964 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 12 variables, input treesize:621, output treesize:139 [2021-03-10 21:45:51,135 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 21:45:51,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:51,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:45:51,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827478473] [2021-03-10 21:45:51,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:45:51,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:51,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:45:51,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:45:51,136 INFO L87 Difference]: Start difference. First operand 170 states and 493 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:51,699 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2021-03-10 21:45:52,085 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 109 [2021-03-10 21:45:52,278 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2021-03-10 21:45:52,481 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-03-10 21:45:52,710 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-03-10 21:45:52,992 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-03-10 21:45:53,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:53,080 INFO L93 Difference]: Finished difference Result 305 states and 845 transitions. [2021-03-10 21:45:53,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 21:45:53,081 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:45:53,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:53,082 INFO L225 Difference]: With dead ends: 305 [2021-03-10 21:45:53,082 INFO L226 Difference]: Without dead ends: 297 [2021-03-10 21:45:53,082 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2017.4ms TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-03-10 21:45:53,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-03-10 21:45:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 165. [2021-03-10 21:45:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.932926829268293) internal successors, (481), 164 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 481 transitions. [2021-03-10 21:45:53,085 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 481 transitions. Word has length 17 [2021-03-10 21:45:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:53,085 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 481 transitions. [2021-03-10 21:45:53,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 481 transitions. [2021-03-10 21:45:53,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:45:53,086 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:53,086 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 21:45:53,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:45:53,299 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:53,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:53,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1825189724, now seen corresponding path program 9 times [2021-03-10 21:45:53,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:53,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818339484] [2021-03-10 21:45:53,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:53,605 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 21:45:53,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818339484] [2021-03-10 21:45:53,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460165810] [2021-03-10 21:45:53,605 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 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 21:45:53,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:45:53,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:53,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:45:53,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:53,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:53,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:53,784 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 27 treesize of output 21 [2021-03-10 21:45:53,785 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:53,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:53,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:53,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:45:53,791 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:53,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:53,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:53,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:53,796 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:53,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:53,800 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 21:45:53,801 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:53,858 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:53,860 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:45:53,860 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:155, output treesize:145 [2021-03-10 21:45:54,185 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2021-03-10 21:45:54,451 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_97, array_4, v_prenex_101, v_prenex_99, v_prenex_104, v_prenex_106], 1=[v_prenex_98, array_2, v_prenex_96, v_prenex_100, v_prenex_103, v_prenex_105]} [2021-03-10 21:45:54,458 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 17 treesize of output 13 [2021-03-10 21:45:54,460 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:54,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:45:54,468 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:54,626 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 62 [2021-03-10 21:45:54,626 INFO L628 ElimStorePlain]: treesize reduction 178, result has 48.7 percent of original size [2021-03-10 21:45:54,626 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:45:54,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:45:54,635 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:54,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:45:54,640 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:54,733 INFO L628 ElimStorePlain]: treesize reduction 11, result has 92.9 percent of original size [2021-03-10 21:45:54,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:45:54,738 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:54,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:45:54,745 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:54,825 INFO L628 ElimStorePlain]: treesize reduction 22, result has 83.1 percent of original size [2021-03-10 21:45:54,825 INFO L518 ElimStorePlain]: Eliminatee v_prenex_104 vanished before elimination [2021-03-10 21:45:54,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:45:54,831 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:54,866 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:54,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:54,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:54,871 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:54,906 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:54,906 INFO L518 ElimStorePlain]: Eliminatee array_2 vanished before elimination [2021-03-10 21:45:54,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:54,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:54,911 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:54,945 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:54,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:54,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:54,950 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 21 treesize of output 7 [2021-03-10 21:45:54,951 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:54,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:54,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:45:54,955 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:54,986 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:54,986 INFO L518 ElimStorePlain]: Eliminatee v_prenex_103 vanished before elimination [2021-03-10 21:45:54,987 INFO L518 ElimStorePlain]: Eliminatee v_prenex_105 vanished before elimination [2021-03-10 21:45:54,989 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-03-10 21:45:54,989 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:343, output treesize:31 [2021-03-10 21:45:55,043 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 21:45:55,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:55,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:45:55,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932348298] [2021-03-10 21:45:55,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:45:55,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:55,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:45:55,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:45:55,044 INFO L87 Difference]: Start difference. First operand 165 states and 481 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:55,643 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2021-03-10 21:45:55,943 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 89 [2021-03-10 21:45:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:56,133 INFO L93 Difference]: Finished difference Result 258 states and 731 transitions. [2021-03-10 21:45:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:45:56,133 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:45:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:56,134 INFO L225 Difference]: With dead ends: 258 [2021-03-10 21:45:56,134 INFO L226 Difference]: Without dead ends: 254 [2021-03-10 21:45:56,134 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1507.9ms TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:45:56,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-03-10 21:45:56,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 167. [2021-03-10 21:45:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.9457831325301207) internal successors, (489), 166 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 489 transitions. [2021-03-10 21:45:56,137 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 489 transitions. Word has length 17 [2021-03-10 21:45:56,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:56,137 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 489 transitions. [2021-03-10 21:45:56,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:56,137 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 489 transitions. [2021-03-10 21:45:56,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:45:56,138 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:56,138 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 21:45:56,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable429 [2021-03-10 21:45:56,343 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:56,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:56,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1159186204, now seen corresponding path program 10 times [2021-03-10 21:45:56,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:56,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858912816] [2021-03-10 21:45:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:56,681 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 21:45:56,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858912816] [2021-03-10 21:45:56,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160537485] [2021-03-10 21:45:56,681 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 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 21:45:56,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:45:56,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:56,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:45:56,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:45:56,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:56,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:56,847 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 27 treesize of output 21 [2021-03-10 21:45:56,849 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:56,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:56,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:56,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:45:56,855 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:56,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:56,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:56,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:45:56,862 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:56,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:56,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:45:56,868 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:56,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:56,935 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:45:56,936 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:169, output treesize:159 [2021-03-10 21:45:57,068 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_108, array_4, v_prenex_110, v_prenex_112], 1=[v_prenex_107, v_prenex_109, array_2, v_prenex_111]} [2021-03-10 21:45:57,074 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 25 treesize of output 19 [2021-03-10 21:45:57,076 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:45:57,083 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,315 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-03-10 21:45:57,315 INFO L628 ElimStorePlain]: treesize reduction 153, result has 62.7 percent of original size [2021-03-10 21:45:57,319 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 27 treesize of output 21 [2021-03-10 21:45:57,321 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:45:57,425 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-03-10 21:45:57,425 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:57,430 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 28 treesize of output 22 [2021-03-10 21:45:57,431 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:45:57,437 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:45:57,442 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:45:57,448 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,542 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:57,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:45:57,548 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,637 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:57,638 INFO L518 ElimStorePlain]: Eliminatee v_prenex_107 vanished before elimination [2021-03-10 21:45:57,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:57,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:57,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:45:57,646 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:57,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:57,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:45:57,652 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:57,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:57,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:45:57,658 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:57,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:57,663 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,750 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:57,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:57,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:57,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:45:57,756 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:57,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:45:57,762 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,771 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:57,856 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:57,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:45:57,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:45:57,861 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:45:57,944 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:45:57,945 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:45:57,945 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:424, output treesize:163 [2021-03-10 21:45:58,147 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 21:45:58,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:45:58,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-03-10 21:45:58,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718525636] [2021-03-10 21:45:58,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:45:58,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:45:58,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:45:58,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:45:58,148 INFO L87 Difference]: Start difference. First operand 167 states and 489 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:58,781 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2021-03-10 21:45:58,987 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-03-10 21:45:59,297 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2021-03-10 21:45:59,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:45:59,398 INFO L93 Difference]: Finished difference Result 267 states and 759 transitions. [2021-03-10 21:45:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:45:59,399 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:45:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:45:59,400 INFO L225 Difference]: With dead ends: 267 [2021-03-10 21:45:59,400 INFO L226 Difference]: Without dead ends: 263 [2021-03-10 21:45:59,400 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1473.5ms TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-03-10 21:45:59,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-03-10 21:45:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 167. [2021-03-10 21:45:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.9457831325301207) internal successors, (489), 166 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 489 transitions. [2021-03-10 21:45:59,403 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 489 transitions. Word has length 17 [2021-03-10 21:45:59,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:45:59,403 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 489 transitions. [2021-03-10 21:45:59,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:45:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 489 transitions. [2021-03-10 21:45:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:45:59,403 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:45:59,404 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 21:45:59,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable465 [2021-03-10 21:45:59,619 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:45:59,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:45:59,619 INFO L82 PathProgramCache]: Analyzing trace with hash -598492624, now seen corresponding path program 11 times [2021-03-10 21:45:59,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:45:59,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095523788] [2021-03-10 21:45:59,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:45:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:45:59,905 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 21:45:59,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095523788] [2021-03-10 21:45:59,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54951336] [2021-03-10 21:45:59,905 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 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 21:45:59,927 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:45:59,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:45:59,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:45:59,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:00,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:00,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:00,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:00,093 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:00,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:00,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:00,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:00,099 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:00,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:00,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:00,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:00,106 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:00,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:00,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:46:00,116 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:46:00,204 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:00,215 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:46:00,215 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:163, output treesize:223 [2021-03-10 21:46:00,495 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-03-10 21:46:00,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:00,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:00,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:00,649 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:00,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:00,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:00,660 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:01,095 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 128 [2021-03-10 21:46:01,096 INFO L628 ElimStorePlain]: treesize reduction 221, result has 63.7 percent of original size [2021-03-10 21:46:01,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:01,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:01,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:46:01,106 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:01,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:01,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:46:01,116 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:01,435 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 124 [2021-03-10 21:46:01,435 INFO L628 ElimStorePlain]: treesize reduction 11, result has 97.1 percent of original size [2021-03-10 21:46:01,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:01,444 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 21 treesize of output 7 [2021-03-10 21:46:01,445 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:01,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:01,453 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:01,465 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:01,624 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-03-10 21:46:01,625 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:01,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:01,635 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 21 treesize of output 7 [2021-03-10 21:46:01,636 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:01,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:46:01,644 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:01,800 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-03-10 21:46:01,800 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:01,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:46:01,809 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:01,962 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-03-10 21:46:01,962 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:01,963 INFO L518 ElimStorePlain]: Eliminatee v_prenex_124 vanished before elimination [2021-03-10 21:46:01,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:01,970 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 30 treesize of output 24 [2021-03-10 21:46:01,971 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:02,266 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-03-10 21:46:02,267 INFO L628 ElimStorePlain]: treesize reduction 5, result has 98.3 percent of original size [2021-03-10 21:46:02,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:46:02,275 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:02,422 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-03-10 21:46:02,423 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:02,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:02,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:02,431 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:02,580 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-03-10 21:46:02,580 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:02,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:02,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:46:02,588 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:02,594 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 20 treesize of output 9 [2021-03-10 21:46:02,595 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:02,606 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:02,757 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-03-10 21:46:02,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:02,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:02,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:02,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:46:02,766 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:02,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:02,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:46:02,773 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:03,042 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2021-03-10 21:46:03,042 INFO L628 ElimStorePlain]: treesize reduction 10, result has 96.3 percent of original size [2021-03-10 21:46:03,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:03,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:46:03,050 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:03,161 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 21:46:03,161 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:03,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:03,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:46:03,167 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:03,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:03,172 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:03,278 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-03-10 21:46:03,279 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:03,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:46:03,285 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:03,402 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:46:03,402 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:03,407 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 21:46:03,408 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 21 variables, input treesize:605, output treesize:155 [2021-03-10 21:46:03,589 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-03-10 21:46:03,671 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 21:46:03,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:03,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:46:03,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728774569] [2021-03-10 21:46:03,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:46:03,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:03,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:46:03,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:46:03,672 INFO L87 Difference]: Start difference. First operand 167 states and 489 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:04,276 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2021-03-10 21:46:04,675 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2021-03-10 21:46:05,172 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2021-03-10 21:46:05,927 WARN L205 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 105 [2021-03-10 21:46:06,374 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 109 [2021-03-10 21:46:07,083 WARN L205 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 118 [2021-03-10 21:46:07,565 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 113 [2021-03-10 21:46:08,345 WARN L205 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 120 [2021-03-10 21:46:09,117 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 116 [2021-03-10 21:46:09,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:09,123 INFO L93 Difference]: Finished difference Result 379 states and 1027 transitions. [2021-03-10 21:46:09,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 21:46:09,123 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:46:09,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:09,125 INFO L225 Difference]: With dead ends: 379 [2021-03-10 21:46:09,125 INFO L226 Difference]: Without dead ends: 367 [2021-03-10 21:46:09,125 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 5492.4ms TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2021-03-10 21:46:09,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-03-10 21:46:09,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 168. [2021-03-10 21:46:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.970059880239521) internal successors, (496), 167 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 496 transitions. [2021-03-10 21:46:09,128 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 496 transitions. Word has length 17 [2021-03-10 21:46:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:09,128 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 496 transitions. [2021-03-10 21:46:09,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 496 transitions. [2021-03-10 21:46:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:09,129 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:09,129 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 21:46:09,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable484 [2021-03-10 21:46:09,336 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:09,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:09,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1539622738, now seen corresponding path program 12 times [2021-03-10 21:46:09,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:09,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037039787] [2021-03-10 21:46:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:09,644 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 21:46:09,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037039787] [2021-03-10 21:46:09,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729361993] [2021-03-10 21:46:09,644 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 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 21:46:09,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 21:46:09,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:09,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:46:09,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:09,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:09,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:09,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:46:09,997 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:10,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:10,001 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 15 treesize of output 11 [2021-03-10 21:46:10,002 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:10,074 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:10,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:10,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:10,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:46:10,080 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:10,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:10,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:10,085 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:10,152 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:10,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:10,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:10,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:10,160 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:10,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:10,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:10,167 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:10,244 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:10,265 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 6 xjuncts. [2021-03-10 21:46:10,266 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:187, output treesize:163 [2021-03-10 21:46:10,611 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_141, array_4, v_prenex_143, v_prenex_145, v_prenex_147], 1=[array_2, v_prenex_140, v_prenex_142, v_prenex_144, v_prenex_146]} [2021-03-10 21:46:10,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:10,620 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:10,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:46:10,628 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:10,945 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-03-10 21:46:10,945 INFO L628 ElimStorePlain]: treesize reduction 152, result has 58.7 percent of original size [2021-03-10 21:46:10,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:10,951 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:11,033 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:11,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:46:11,039 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,121 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:11,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:46:11,128 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:46:11,134 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:46:11,141 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:46:11,147 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,222 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:11,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:46:11,228 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,301 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:11,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:11,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:11,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:46:11,309 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:11,314 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 20 treesize of output 9 [2021-03-10 21:46:11,315 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,327 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:11,398 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:11,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:11,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:11,403 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,472 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:11,472 INFO L518 ElimStorePlain]: Eliminatee v_prenex_142 vanished before elimination [2021-03-10 21:46:11,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:11,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:11,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:46:11,479 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:11,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:11,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:11,486 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:11,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:11,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:11,496 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:11,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:46:11,502 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:11,566 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:11,567 INFO L518 ElimStorePlain]: Eliminatee v_prenex_146 vanished before elimination [2021-03-10 21:46:11,571 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:46:11,572 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 15 variables, input treesize:364, output treesize:62 [2021-03-10 21:46:11,634 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 21:46:11,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:11,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:46:11,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631462874] [2021-03-10 21:46:11,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:46:11,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:11,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:46:11,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:46:11,635 INFO L87 Difference]: Start difference. First operand 168 states and 496 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:12,306 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-03-10 21:46:12,699 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2021-03-10 21:46:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:13,082 INFO L93 Difference]: Finished difference Result 285 states and 804 transitions. [2021-03-10 21:46:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:46:13,082 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:46:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:13,084 INFO L225 Difference]: With dead ends: 285 [2021-03-10 21:46:13,084 INFO L226 Difference]: Without dead ends: 277 [2021-03-10 21:46:13,084 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1580.3ms TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2021-03-10 21:46:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-03-10 21:46:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 165. [2021-03-10 21:46:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.9695121951219514) internal successors, (487), 164 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 487 transitions. [2021-03-10 21:46:13,086 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 487 transitions. Word has length 17 [2021-03-10 21:46:13,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:13,087 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 487 transitions. [2021-03-10 21:46:13,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 487 transitions. [2021-03-10 21:46:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:13,087 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:13,087 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 21:46:13,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable517,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:13,289 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:13,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:13,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1020683452, now seen corresponding path program 13 times [2021-03-10 21:46:13,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:13,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121214256] [2021-03-10 21:46:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:13,540 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-03-10 21:46:13,873 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 21:46:13,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121214256] [2021-03-10 21:46:13,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562631187] [2021-03-10 21:46:13,874 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 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 21:46:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:13,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:46:13,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:14,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:14,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:14,025 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 25 treesize of output 19 [2021-03-10 21:46:14,027 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:14,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:14,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:14,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:14,036 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:14,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:14,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:14,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:46:14,044 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:14,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:14,049 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 15 treesize of output 11 [2021-03-10 21:46:14,050 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:14,107 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:14,108 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:46:14,109 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:137, output treesize:127 [2021-03-10 21:46:14,430 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-03-10 21:46:14,773 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_161, v_prenex_163, array_4, v_prenex_165, v_prenex_157, v_prenex_159], 1=[v_prenex_160, array_2, v_prenex_162, v_prenex_164, v_prenex_156, v_prenex_158]} [2021-03-10 21:46:14,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:46:14,784 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:14,791 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 25 treesize of output 19 [2021-03-10 21:46:14,793 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,130 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2021-03-10 21:46:15,130 INFO L628 ElimStorePlain]: treesize reduction 134, result has 61.7 percent of original size [2021-03-10 21:46:15,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:46:15,137 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,228 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:15,233 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 27 treesize of output 21 [2021-03-10 21:46:15,235 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:15,328 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:15,334 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 19 treesize of output 15 [2021-03-10 21:46:15,335 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:46:15,342 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,431 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:15,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:46:15,437 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,523 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:15,529 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 30 treesize of output 24 [2021-03-10 21:46:15,530 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:46:15,537 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,615 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:15,616 INFO L518 ElimStorePlain]: Eliminatee v_prenex_160 vanished before elimination [2021-03-10 21:46:15,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:15,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:15,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:46:15,624 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:15,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:46:15,630 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,641 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:15,715 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:15,715 INFO L518 ElimStorePlain]: Eliminatee v_prenex_162 vanished before elimination [2021-03-10 21:46:15,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:15,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:15,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:46:15,723 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:15,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:15,730 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,804 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:15,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:15,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:15,811 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,879 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:15,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:15,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:15,884 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 24 treesize of output 9 [2021-03-10 21:46:15,884 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:15,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:15,889 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:15,948 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:15,951 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:46:15,951 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 18 variables, input treesize:364, output treesize:62 [2021-03-10 21:46:16,007 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 21:46:16,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:16,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-03-10 21:46:16,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939962490] [2021-03-10 21:46:16,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:46:16,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:16,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:46:16,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:46:16,008 INFO L87 Difference]: Start difference. First operand 165 states and 487 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:16,666 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-03-10 21:46:17,117 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 97 [2021-03-10 21:46:18,059 WARN L205 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 147 [2021-03-10 21:46:18,605 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 112 [2021-03-10 21:46:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:18,719 INFO L93 Difference]: Finished difference Result 306 states and 849 transitions. [2021-03-10 21:46:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:46:18,719 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:46:18,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:18,720 INFO L225 Difference]: With dead ends: 306 [2021-03-10 21:46:18,720 INFO L226 Difference]: Without dead ends: 302 [2021-03-10 21:46:18,720 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 3185.4ms TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-03-10 21:46:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-03-10 21:46:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 164. [2021-03-10 21:46:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.96319018404908) internal successors, (483), 163 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 21:46:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 483 transitions. [2021-03-10 21:46:18,723 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 483 transitions. Word has length 17 [2021-03-10 21:46:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:18,723 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 483 transitions. [2021-03-10 21:46:18,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 483 transitions. [2021-03-10 21:46:18,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:18,724 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:18,724 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 21:46:18,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable568 [2021-03-10 21:46:18,939 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:18,939 INFO L82 PathProgramCache]: Analyzing trace with hash -398897312, now seen corresponding path program 14 times [2021-03-10 21:46:18,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:18,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558233870] [2021-03-10 21:46:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:19,353 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 21:46:19,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558233870] [2021-03-10 21:46:19,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852831663] [2021-03-10 21:46:19,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:46:19,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:46:19,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:19,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:46:19,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:19,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:19,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:19,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:19,508 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:19,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:19,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:19,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:19,516 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:19,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:19,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:19,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:46:19,523 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:19,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:19,528 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 21:46:19,530 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:19,590 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:19,591 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:46:19,592 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:137, output treesize:127 [2021-03-10 21:46:20,014 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-03-10 21:46:20,327 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_181, v_prenex_183, v_prenex_185, array_4, v_prenex_176, v_prenex_178], 1=[v_prenex_180, v_prenex_182, v_prenex_184, array_2, v_prenex_175, v_prenex_177]} [2021-03-10 21:46:20,334 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 19 treesize of output 15 [2021-03-10 21:46:20,336 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:20,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:46:20,345 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:20,708 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2021-03-10 21:46:20,709 INFO L628 ElimStorePlain]: treesize reduction 141, result has 59.6 percent of original size [2021-03-10 21:46:20,715 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 19 treesize of output 15 [2021-03-10 21:46:20,717 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:20,803 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:20,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:20,811 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:20,908 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:20,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:46:20,916 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:21,011 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:21,017 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 7 treesize of output 5 [2021-03-10 21:46:21,018 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:21,114 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:21,120 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 28 treesize of output 22 [2021-03-10 21:46:21,121 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:21,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:46:21,129 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:21,211 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:21,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:21,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:21,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:21,220 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:21,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:21,226 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 12 treesize of output 5 [2021-03-10 21:46:21,228 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:21,309 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:21,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:21,315 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 11 treesize of output 3 [2021-03-10 21:46:21,316 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:21,396 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:21,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:21,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:21,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:46:21,404 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:21,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:21,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:46:21,411 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:21,423 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:21,500 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:21,500 INFO L518 ElimStorePlain]: Eliminatee array_2 vanished before elimination [2021-03-10 21:46:21,500 INFO L518 ElimStorePlain]: Eliminatee v_prenex_175 vanished before elimination [2021-03-10 21:46:21,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:21,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:21,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:46:21,508 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:21,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:21,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:21,515 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:21,590 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:21,594 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:46:21,594 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 18 variables, input treesize:364, output treesize:62 [2021-03-10 21:46:21,662 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 21:46:21,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:21,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:46:21,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496962607] [2021-03-10 21:46:21,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:46:21,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:21,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:46:21,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:46:21,663 INFO L87 Difference]: Start difference. First operand 164 states and 483 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:22,151 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2021-03-10 21:46:22,487 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 47 [2021-03-10 21:46:23,063 WARN L205 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 96 [2021-03-10 21:46:23,329 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2021-03-10 21:46:23,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:23,399 INFO L93 Difference]: Finished difference Result 279 states and 784 transitions. [2021-03-10 21:46:23,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:46:23,399 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:46:23,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:23,400 INFO L225 Difference]: With dead ends: 279 [2021-03-10 21:46:23,400 INFO L226 Difference]: Without dead ends: 275 [2021-03-10 21:46:23,401 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2258.5ms TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:46:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-03-10 21:46:23,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 163. [2021-03-10 21:46:23,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 2.95679012345679) internal successors, (479), 162 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 479 transitions. [2021-03-10 21:46:23,412 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 479 transitions. Word has length 17 [2021-03-10 21:46:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:23,412 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 479 transitions. [2021-03-10 21:46:23,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:23,413 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 479 transitions. [2021-03-10 21:46:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:23,413 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:23,413 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 21:46:23,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable605 [2021-03-10 21:46:23,619 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:23,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:23,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1064900832, now seen corresponding path program 15 times [2021-03-10 21:46:23,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:23,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220827812] [2021-03-10 21:46:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:24,172 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 21:46:24,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220827812] [2021-03-10 21:46:24,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671801765] [2021-03-10 21:46:24,172 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 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 21:46:24,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:46:24,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:24,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:46:24,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:24,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,345 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 27 treesize of output 21 [2021-03-10 21:46:24,347 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:24,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:46:24,354 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:24,362 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:24,369 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,430 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:24,431 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:46:24,431 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:151, output treesize:141 [2021-03-10 21:46:24,610 INFO L446 ElimStorePlain]: Different costs {0=[array_4], 1=[array_2]} [2021-03-10 21:46:24,614 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 38 treesize of output 30 [2021-03-10 21:46:24,616 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:24,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:46:24,621 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:24,627 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:24,632 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 35 treesize of output 27 [2021-03-10 21:46:24,633 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:46:24,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:24,642 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:46:24,650 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:46:24,658 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:24,665 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:46:24,673 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:24,679 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:46:24,680 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,948 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2021-03-10 21:46:24,949 INFO L628 ElimStorePlain]: treesize reduction 255, result has 48.8 percent of original size [2021-03-10 21:46:24,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:24,956 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,962 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 24 treesize of output 9 [2021-03-10 21:46:24,964 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,970 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 21 treesize of output 7 [2021-03-10 21:46:24,971 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:46:24,979 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,984 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 11 treesize of output 3 [2021-03-10 21:46:24,985 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,991 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 20 treesize of output 9 [2021-03-10 21:46:24,992 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:24,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:24,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:46:24,998 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:25,009 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:25,105 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:25,107 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:46:25,107 INFO L247 ElimStorePlain]: Needed 18 recursive calls to eliminate 2 variables, input treesize:436, output treesize:169 [2021-03-10 21:46:25,358 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 21:46:25,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:25,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-03-10 21:46:25,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325974669] [2021-03-10 21:46:25,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:46:25,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:25,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:46:25,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:46:25,359 INFO L87 Difference]: Start difference. First operand 163 states and 479 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:25,957 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2021-03-10 21:46:26,388 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-03-10 21:46:26,913 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2021-03-10 21:46:27,343 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2021-03-10 21:46:27,859 WARN L205 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 101 [2021-03-10 21:46:28,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:28,016 INFO L93 Difference]: Finished difference Result 291 states and 818 transitions. [2021-03-10 21:46:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:46:28,017 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:46:28,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:28,018 INFO L225 Difference]: With dead ends: 291 [2021-03-10 21:46:28,018 INFO L226 Difference]: Without dead ends: 287 [2021-03-10 21:46:28,018 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3063.6ms TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-03-10 21:46:28,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-03-10 21:46:28,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 161. [2021-03-10 21:46:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 2.94375) internal successors, (471), 160 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 471 transitions. [2021-03-10 21:46:28,021 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 471 transitions. Word has length 17 [2021-03-10 21:46:28,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:28,021 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 471 transitions. [2021-03-10 21:46:28,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:28,021 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 471 transitions. [2021-03-10 21:46:28,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:28,022 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:28,022 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 21:46:28,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable642 [2021-03-10 21:46:28,235 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:28,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:28,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1496339310, now seen corresponding path program 16 times [2021-03-10 21:46:28,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:28,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949949125] [2021-03-10 21:46:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:28,515 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 21:46:28,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949949125] [2021-03-10 21:46:28,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097008626] [2021-03-10 21:46:28,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:46:28,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:46:28,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:28,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:46:28,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:28,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:46:28,667 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:28,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:28,673 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:28,677 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 17 treesize of output 13 [2021-03-10 21:46:28,679 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:28,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:28,684 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:28,733 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:28,741 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:46:28,741 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:115, output treesize:103 [2021-03-10 21:46:29,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:29,148 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:46:29,158 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:29,169 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:29,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:29,180 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,189 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 25 treesize of output 19 [2021-03-10 21:46:29,191 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,201 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 17 treesize of output 13 [2021-03-10 21:46:29,203 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:46:29,214 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2021-03-10 21:46:29,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,222 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 28 treesize of output 22 [2021-03-10 21:46:29,223 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:29,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 29 [2021-03-10 21:46:29,233 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:29,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:29,243 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,666 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2021-03-10 21:46:29,667 INFO L628 ElimStorePlain]: treesize reduction 150, result has 70.1 percent of original size [2021-03-10 21:46:29,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 11 [2021-03-10 21:46:29,676 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,685 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 12 treesize of output 5 [2021-03-10 21:46:29,686 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,699 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:29,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,707 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 21 treesize of output 7 [2021-03-10 21:46:29,709 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:29,731 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,745 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:29,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:29,754 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:29,763 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,776 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:29,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,784 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 9 treesize of output 3 [2021-03-10 21:46:29,785 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,793 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 24 treesize of output 9 [2021-03-10 21:46:29,794 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:46:29,803 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,822 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:29,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,830 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 20 treesize of output 9 [2021-03-10 21:46:29,831 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:29,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:29,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:46:29,839 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:30,008 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:46:30,008 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:30,014 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:46:30,014 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 7 variables, input treesize:403, output treesize:179 [2021-03-10 21:46:30,221 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-03-10 21:46:30,285 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 21:46:30,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:30,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-03-10 21:46:30,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361194799] [2021-03-10 21:46:30,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:46:30,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:30,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:46:30,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:46:30,286 INFO L87 Difference]: Start difference. First operand 161 states and 471 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 21:46:30,796 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-03-10 21:46:31,175 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2021-03-10 21:46:31,580 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2021-03-10 21:46:31,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:31,647 INFO L93 Difference]: Finished difference Result 238 states and 685 transitions. [2021-03-10 21:46:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:46:31,648 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 17 [2021-03-10 21:46:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:31,649 INFO L225 Difference]: With dead ends: 238 [2021-03-10 21:46:31,649 INFO L226 Difference]: Without dead ends: 234 [2021-03-10 21:46:31,649 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1646.6ms TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:46:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-03-10 21:46:31,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 168. [2021-03-10 21:46:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.946107784431138) internal successors, (492), 167 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 492 transitions. [2021-03-10 21:46:31,652 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 492 transitions. Word has length 17 [2021-03-10 21:46:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:31,652 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 492 transitions. [2021-03-10 21:46:31,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 21:46:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 492 transitions. [2021-03-10 21:46:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:31,653 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:31,653 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 21:46:31,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable658 [2021-03-10 21:46:31,868 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:31,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:31,868 INFO L82 PathProgramCache]: Analyzing trace with hash 849561632, now seen corresponding path program 17 times [2021-03-10 21:46:31,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:31,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49831892] [2021-03-10 21:46:31,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:32,248 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 21:46:32,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49831892] [2021-03-10 21:46:32,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632505130] [2021-03-10 21:46:32,249 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 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 21:46:32,270 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:46:32,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:32,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:46:32,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:32,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:32,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:32,640 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 25 treesize of output 19 [2021-03-10 21:46:32,642 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:32,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:32,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:32,649 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:32,708 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:32,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:32,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:32,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:32,716 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:32,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:32,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:32,724 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:32,782 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:32,790 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:46:32,790 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:136, output treesize:124 [2021-03-10 21:46:33,169 INFO L446 ElimStorePlain]: Different costs {0=[array_4, v_prenex_198, v_prenex_200, v_prenex_202], 1=[array_0, v_prenex_197, v_prenex_199, v_prenex_201]} [2021-03-10 21:46:33,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:33,177 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:33,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:33,185 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:33,349 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2021-03-10 21:46:33,349 INFO L628 ElimStorePlain]: treesize reduction 150, result has 49.2 percent of original size [2021-03-10 21:46:33,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:33,356 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:33,426 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:33,426 INFO L518 ElimStorePlain]: Eliminatee v_prenex_200 vanished before elimination [2021-03-10 21:46:33,431 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 27 treesize of output 21 [2021-03-10 21:46:33,432 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:33,437 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 18 treesize of output 14 [2021-03-10 21:46:33,438 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:33,502 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:33,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:33,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:33,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:33,510 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:33,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:33,515 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 11 treesize of output 3 [2021-03-10 21:46:33,516 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:33,529 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:33,593 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:33,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:33,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:33,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:33,600 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:33,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:33,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:33,607 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:33,618 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:33,678 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:33,679 INFO L518 ElimStorePlain]: Eliminatee v_prenex_199 vanished before elimination [2021-03-10 21:46:33,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:33,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:33,685 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 10 treesize of output 5 [2021-03-10 21:46:33,686 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:33,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:33,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:46:33,691 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:33,750 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:33,753 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:46:33,753 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 12 variables, input treesize:291, output treesize:54 [2021-03-10 21:46:33,825 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 21:46:33,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:33,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:46:33,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018071402] [2021-03-10 21:46:33,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:46:33,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:33,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:46:33,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:46:33,826 INFO L87 Difference]: Start difference. First operand 168 states and 492 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:34,330 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-03-10 21:46:34,535 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2021-03-10 21:46:34,867 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2021-03-10 21:46:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:35,233 INFO L93 Difference]: Finished difference Result 207 states and 602 transitions. [2021-03-10 21:46:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:46:35,234 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:46:35,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:35,234 INFO L225 Difference]: With dead ends: 207 [2021-03-10 21:46:35,235 INFO L226 Difference]: Without dead ends: 203 [2021-03-10 21:46:35,235 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1611.1ms TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:46:35,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-03-10 21:46:35,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 171. [2021-03-10 21:46:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.947058823529412) internal successors, (501), 170 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 501 transitions. [2021-03-10 21:46:35,247 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 501 transitions. Word has length 17 [2021-03-10 21:46:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:35,247 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 501 transitions. [2021-03-10 21:46:35,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 501 transitions. [2021-03-10 21:46:35,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:35,247 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:35,247 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 21:46:35,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable693,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:35,464 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:35,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:35,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1964167794, now seen corresponding path program 18 times [2021-03-10 21:46:35,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:35,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725426193] [2021-03-10 21:46:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:35,715 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 21:46:35,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725426193] [2021-03-10 21:46:35,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750267758] [2021-03-10 21:46:35,716 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 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 21:46:35,738 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:46:35,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:35,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:46:35,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:36,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:36,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:36,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:36,023 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:36,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:36,029 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 17 treesize of output 13 [2021-03-10 21:46:36,031 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:36,126 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:36,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:36,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:36,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:36,134 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:36,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:36,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:46:36,141 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:36,228 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:36,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:36,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:36,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:36,237 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:36,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:36,242 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 27 treesize of output 21 [2021-03-10 21:46:36,244 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:36,334 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:36,343 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 6 xjuncts. [2021-03-10 21:46:36,344 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:193, output treesize:169 [2021-03-10 21:46:36,694 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_217, v_prenex_219, array_4, v_prenex_213, v_prenex_215], 1=[v_prenex_218, array_2, v_prenex_212, v_prenex_214, v_prenex_216]} [2021-03-10 21:46:36,700 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 15 treesize of output 11 [2021-03-10 21:46:36,702 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:36,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:36,710 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,055 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2021-03-10 21:46:37,056 INFO L628 ElimStorePlain]: treesize reduction 134, result has 61.7 percent of original size [2021-03-10 21:46:37,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:46:37,064 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,157 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:37,163 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 28 treesize of output 22 [2021-03-10 21:46:37,165 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:46:37,173 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,179 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 30 treesize of output 24 [2021-03-10 21:46:37,181 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,187 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 19 treesize of output 15 [2021-03-10 21:46:37,188 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,272 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:37,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:37,279 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:37,372 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:37,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:46:37,381 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,466 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:37,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_218 vanished before elimination [2021-03-10 21:46:37,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:37,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:37,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:46:37,475 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:37,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:37,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:37,483 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:37,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:37,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:46:37,492 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:37,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:37,499 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,579 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:37,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:37,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:37,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:46:37,587 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:37,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:46:37,596 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,610 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:37,689 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:37,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:37,694 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 11 treesize of output 3 [2021-03-10 21:46:37,696 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:37,771 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:37,772 INFO L518 ElimStorePlain]: Eliminatee v_prenex_216 vanished before elimination [2021-03-10 21:46:37,775 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:46:37,775 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 15 variables, input treesize:364, output treesize:62 [2021-03-10 21:46:37,848 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 21:46:37,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:37,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:46:37,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577632454] [2021-03-10 21:46:37,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:46:37,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:37,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:46:37,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:46:37,849 INFO L87 Difference]: Start difference. First operand 171 states and 501 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:38,305 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-03-10 21:46:38,748 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-03-10 21:46:38,941 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-03-10 21:46:39,344 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 109 [2021-03-10 21:46:39,592 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-03-10 21:46:39,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:39,803 INFO L93 Difference]: Finished difference Result 221 states and 635 transitions. [2021-03-10 21:46:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 21:46:39,804 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:46:39,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:39,805 INFO L225 Difference]: With dead ends: 221 [2021-03-10 21:46:39,805 INFO L226 Difference]: Without dead ends: 213 [2021-03-10 21:46:39,805 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1927.2ms TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-03-10 21:46:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-03-10 21:46:39,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 163. [2021-03-10 21:46:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 2.9444444444444446) internal successors, (477), 162 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 477 transitions. [2021-03-10 21:46:39,808 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 477 transitions. Word has length 17 [2021-03-10 21:46:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:39,808 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 477 transitions. [2021-03-10 21:46:39,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 477 transitions. [2021-03-10 21:46:39,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:39,808 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:39,808 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 21:46:40,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable737 [2021-03-10 21:46:40,009 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:40,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:40,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1308901226, now seen corresponding path program 19 times [2021-03-10 21:46:40,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:40,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928517994] [2021-03-10 21:46:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:40,278 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 21:46:40,577 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 21:46:40,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928517994] [2021-03-10 21:46:40,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028580619] [2021-03-10 21:46:40,577 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:40,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:46:40,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:40,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:40,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:40,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:40,719 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:40,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:40,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:40,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:40,724 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:40,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:40,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:40,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:40,728 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:40,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:40,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:46:40,732 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:40,769 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:40,774 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:46:40,774 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:115, output treesize:103 [2021-03-10 21:46:41,358 INFO L446 ElimStorePlain]: Different costs {1=[array_4], 15=[array_0]} [2021-03-10 21:46:41,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:46:41,368 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:46:41,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,375 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 28 treesize of output 22 [2021-03-10 21:46:41,377 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:41,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,385 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 17 treesize of output 13 [2021-03-10 21:46:41,387 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,396 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 25 treesize of output 19 [2021-03-10 21:46:41,398 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:41,409 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:41,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:41,420 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 29 [2021-03-10 21:46:41,431 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:41,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,439 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 25 treesize of output 19 [2021-03-10 21:46:41,441 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:46:41,451 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:41,461 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,860 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2021-03-10 21:46:41,861 INFO L628 ElimStorePlain]: treesize reduction 144, result has 71.3 percent of original size [2021-03-10 21:46:41,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:46:41,868 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:46:41,875 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:46:41,881 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,896 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:41,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,902 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 11 [2021-03-10 21:46:41,903 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,908 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 12 treesize of output 5 [2021-03-10 21:46:41,909 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:41,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:46:41,936 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:41,945 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:41,954 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,967 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:41,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,974 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 21 treesize of output 7 [2021-03-10 21:46:41,976 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:41,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:41,983 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 21 treesize of output 7 [2021-03-10 21:46:41,985 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:42,000 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:42,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:42,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:46:42,010 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:42,188 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:46:42,189 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:42,193 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:46:42,193 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 7 variables, input treesize:403, output treesize:179 [2021-03-10 21:46:42,466 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-03-10 21:46:42,570 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 21:46:42,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:42,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:46:42,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880074687] [2021-03-10 21:46:42,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:46:42,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:42,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:46:42,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:46:42,571 INFO L87 Difference]: Start difference. First operand 163 states and 477 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:43,149 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2021-03-10 21:46:43,418 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2021-03-10 21:46:43,665 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2021-03-10 21:46:43,956 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 21:46:44,436 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 95 [2021-03-10 21:46:44,954 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 99 [2021-03-10 21:46:45,418 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2021-03-10 21:46:45,936 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2021-03-10 21:46:46,485 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 102 [2021-03-10 21:46:46,913 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2021-03-10 21:46:47,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:47,027 INFO L93 Difference]: Finished difference Result 246 states and 701 transitions. [2021-03-10 21:46:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 21:46:47,028 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:46:47,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:47,029 INFO L225 Difference]: With dead ends: 246 [2021-03-10 21:46:47,029 INFO L226 Difference]: Without dead ends: 238 [2021-03-10 21:46:47,030 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4795.9ms TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2021-03-10 21:46:47,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-03-10 21:46:47,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 167. [2021-03-10 21:46:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.9457831325301207) internal successors, (489), 166 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 489 transitions. [2021-03-10 21:46:47,032 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 489 transitions. Word has length 17 [2021-03-10 21:46:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:47,032 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 489 transitions. [2021-03-10 21:46:47,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 489 transitions. [2021-03-10 21:46:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:47,033 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:47,033 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 21:46:47,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable789 [2021-03-10 21:46:47,248 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:47,248 INFO L82 PathProgramCache]: Analyzing trace with hash -2024967756, now seen corresponding path program 20 times [2021-03-10 21:46:47,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:47,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727489143] [2021-03-10 21:46:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:47,728 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 21:46:47,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727489143] [2021-03-10 21:46:47,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665241430] [2021-03-10 21:46:47,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:47,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:46:47,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:47,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:46:47,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:47,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:47,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:47,925 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 25 treesize of output 19 [2021-03-10 21:46:47,927 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:47,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:47,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:47,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:47,935 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:47,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:47,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:47,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:47,944 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:47,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:47,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:46:47,951 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:46:48,059 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:46:48,060 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:48,062 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:46:48,062 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:165, output treesize:221 [2021-03-10 21:46:48,209 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:46:48,498 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 56 [2021-03-10 21:46:48,761 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_239, array_4, v_prenex_233, v_prenex_235, v_prenex_237], 1=[array_0, v_prenex_232, v_prenex_234, v_prenex_236, v_prenex_238]} [2021-03-10 21:46:48,768 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 27 treesize of output 21 [2021-03-10 21:46:48,769 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:48,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:46:48,778 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:48,965 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-03-10 21:46:48,966 INFO L628 ElimStorePlain]: treesize reduction 128, result has 57.8 percent of original size [2021-03-10 21:46:48,970 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 7 treesize of output 5 [2021-03-10 21:46:48,971 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:49,020 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:49,024 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 27 treesize of output 21 [2021-03-10 21:46:49,026 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:49,081 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:49,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:49,086 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:49,152 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:49,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:46:49,160 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:49,250 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:49,251 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 21:46:49,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:49,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:49,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:49,260 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:49,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:49,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:49,268 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:49,283 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:49,361 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:49,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:49,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:49,368 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 11 treesize of output 3 [2021-03-10 21:46:49,376 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:49,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:49,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:49,385 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:49,399 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:49,485 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:49,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:49,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:46:49,492 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:49,576 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:49,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:49,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:49,584 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 24 treesize of output 9 [2021-03-10 21:46:49,585 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:49,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:49,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:46:49,593 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:49,677 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:49,681 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:46:49,681 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 15 variables, input treesize:315, output treesize:62 [2021-03-10 21:46:49,768 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 21:46:49,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:49,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:46:49,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996378108] [2021-03-10 21:46:49,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:46:49,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:49,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:46:49,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:46:49,769 INFO L87 Difference]: Start difference. First operand 167 states and 489 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:50,692 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2021-03-10 21:46:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:50,833 INFO L93 Difference]: Finished difference Result 198 states and 571 transitions. [2021-03-10 21:46:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:46:50,834 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:46:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:50,835 INFO L225 Difference]: With dead ends: 198 [2021-03-10 21:46:50,835 INFO L226 Difference]: Without dead ends: 194 [2021-03-10 21:46:50,835 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1725.5ms TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:46:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-03-10 21:46:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 171. [2021-03-10 21:46:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.958823529411765) internal successors, (503), 170 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 503 transitions. [2021-03-10 21:46:50,838 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 503 transitions. Word has length 17 [2021-03-10 21:46:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:50,838 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 503 transitions. [2021-03-10 21:46:50,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 503 transitions. [2021-03-10 21:46:50,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:50,838 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:50,838 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 21:46:51,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable828,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:51,051 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:51,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:51,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2023379368, now seen corresponding path program 21 times [2021-03-10 21:46:51,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:51,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811537037] [2021-03-10 21:46:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:51,346 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 21:46:51,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811537037] [2021-03-10 21:46:51,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155059994] [2021-03-10 21:46:51,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:51,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:46:51,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:51,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:46:51,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:51,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:51,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:51,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:51,556 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:51,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:51,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:51,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:51,565 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:51,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:51,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:51,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:51,575 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:51,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:51,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:46:51,585 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:46:51,699 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:46:51,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:51,702 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:46:51,702 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:159, output treesize:215 [2021-03-10 21:46:51,862 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:46:51,907 INFO L446 ElimStorePlain]: Different costs {0=[array_4, v_prenex_242, v_prenex_244, v_prenex_246], 1=[array_0, v_prenex_241, v_prenex_243, v_prenex_245]} [2021-03-10 21:46:51,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 37 [2021-03-10 21:46:51,916 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:51,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:46:51,926 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:51,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:46:51,936 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:51,943 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 27 treesize of output 21 [2021-03-10 21:46:51,945 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:51,952 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:46:51,954 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:51,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:51,963 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:51,970 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 45 treesize of output 35 [2021-03-10 21:46:51,973 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:51,980 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:46:51,982 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:52,317 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-03-10 21:46:52,318 INFO L628 ElimStorePlain]: treesize reduction 186, result has 57.8 percent of original size [2021-03-10 21:46:52,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:46:52,325 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:52,458 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:46:52,458 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:52,463 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 27 treesize of output 21 [2021-03-10 21:46:52,466 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:52,613 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-03-10 21:46:52,614 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:52,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:52,621 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:52,779 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:46:52,780 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:52,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:46:52,790 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:52,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,798 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 12 treesize of output 5 [2021-03-10 21:46:52,799 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:52,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:46:52,809 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:52,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 15 [2021-03-10 21:46:52,818 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:52,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:46:52,825 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:52,946 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-03-10 21:46:52,947 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:52,947 INFO L518 ElimStorePlain]: Eliminatee v_prenex_241 vanished before elimination [2021-03-10 21:46:52,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:52,953 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:52,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:52,956 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 11 treesize of output 3 [2021-03-10 21:46:52,957 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:52,967 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:53,061 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:53,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:53,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:53,066 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 11 treesize of output 3 [2021-03-10 21:46:53,066 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:53,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:53,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:53,071 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:53,079 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:53,196 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:46:53,196 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:53,198 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:46:53,199 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 8 variables, input treesize:555, output treesize:159 [2021-03-10 21:46:53,354 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:46:53,501 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 21:46:53,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:53,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:46:53,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090676380] [2021-03-10 21:46:53,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:46:53,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:53,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:46:53,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:46:53,502 INFO L87 Difference]: Start difference. First operand 171 states and 503 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:54,025 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-03-10 21:46:54,322 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-03-10 21:46:54,557 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:46:54,886 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-03-10 21:46:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:55,014 INFO L93 Difference]: Finished difference Result 209 states and 604 transitions. [2021-03-10 21:46:55,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:46:55,016 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:46:55,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:55,016 INFO L225 Difference]: With dead ends: 209 [2021-03-10 21:46:55,016 INFO L226 Difference]: Without dead ends: 205 [2021-03-10 21:46:55,017 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1778.4ms TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:46:55,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-03-10 21:46:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 169. [2021-03-10 21:46:55,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.9464285714285716) internal successors, (495), 168 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 495 transitions. [2021-03-10 21:46:55,019 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 495 transitions. Word has length 17 [2021-03-10 21:46:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:55,019 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 495 transitions. [2021-03-10 21:46:55,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 495 transitions. [2021-03-10 21:46:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:55,020 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:55,020 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 21:46:55,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable852 [2021-03-10 21:46:55,229 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:55,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:55,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2098340236, now seen corresponding path program 22 times [2021-03-10 21:46:55,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:55,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668751444] [2021-03-10 21:46:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:55,710 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 21:46:55,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668751444] [2021-03-10 21:46:55,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207535081] [2021-03-10 21:46:55,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:55,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:46:55,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:55,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:46:55,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:55,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:46:55,926 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:55,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:55,931 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:55,989 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:55,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:55,995 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:55,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:56,000 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:56,065 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:46:56,065 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:168, output treesize:158 [2021-03-10 21:46:56,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,245 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 38 treesize of output 30 [2021-03-10 21:46:56,248 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:56,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,256 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 25 treesize of output 19 [2021-03-10 21:46:56,258 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:46:56,268 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2021-03-10 21:46:56,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:46:56,276 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:46:56,286 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2021-03-10 21:46:56,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,296 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 15 treesize of output 11 [2021-03-10 21:46:56,297 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,307 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 29 treesize of output 23 [2021-03-10 21:46:56,309 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:56,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:46:56,320 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:56,330 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:56,341 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,724 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2021-03-10 21:46:56,725 INFO L628 ElimStorePlain]: treesize reduction 375, result has 39.3 percent of original size [2021-03-10 21:46:56,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:56,734 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:46:56,743 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:46:56,752 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,769 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:56,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:56,778 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:46:56,787 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,802 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:56,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:46:56,811 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:56,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:46:56,818 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:56,951 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 21:46:56,952 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:46:56,954 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-03-10 21:46:56,954 INFO L247 ElimStorePlain]: Needed 18 recursive calls to eliminate 2 variables, input treesize:455, output treesize:164 [2021-03-10 21:46:57,125 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 21:46:57,291 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2021-03-10 21:46:57,313 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 21:46:57,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:46:57,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:46:57,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582786773] [2021-03-10 21:46:57,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:46:57,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:46:57,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:46:57,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:46:57,314 INFO L87 Difference]: Start difference. First operand 169 states and 495 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:57,913 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-03-10 21:46:58,404 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2021-03-10 21:46:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:46:58,608 INFO L93 Difference]: Finished difference Result 199 states and 579 transitions. [2021-03-10 21:46:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:46:58,609 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:46:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:46:58,610 INFO L225 Difference]: With dead ends: 199 [2021-03-10 21:46:58,610 INFO L226 Difference]: Without dead ends: 195 [2021-03-10 21:46:58,610 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1751.8ms TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:46:58,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-03-10 21:46:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 173. [2021-03-10 21:46:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 2.947674418604651) internal successors, (507), 172 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 21:46:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 507 transitions. [2021-03-10 21:46:58,613 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 507 transitions. Word has length 17 [2021-03-10 21:46:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:46:58,613 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 507 transitions. [2021-03-10 21:46:58,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:46:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 507 transitions. [2021-03-10 21:46:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:46:58,613 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:46:58,614 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 21:46:58,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable870,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:58,829 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:46:58,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:46:58,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1062058060, now seen corresponding path program 23 times [2021-03-10 21:46:58,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:46:58,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187126571] [2021-03-10 21:46:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:46:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:46:59,234 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 21:46:59,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187126571] [2021-03-10 21:46:59,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126414457] [2021-03-10 21:46:59,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:46:59,259 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:46:59,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:46:59,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:46:59,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:46:59,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:59,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:59,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:59,769 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:59,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:59,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:46:59,778 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:46:59,930 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-03-10 21:46:59,930 INFO L628 ElimStorePlain]: treesize reduction 36, result has 81.1 percent of original size [2021-03-10 21:46:59,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:59,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:59,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:46:59,936 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:46:59,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:46:59,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:46:59,941 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:00,002 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:00,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:00,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:00,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:47:00,008 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:00,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:00,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:00,022 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:00,100 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:00,111 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 5 dim-0 vars, and 5 xjuncts. [2021-03-10 21:47:00,112 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:204, output treesize:142 [2021-03-10 21:47:00,498 INFO L446 ElimStorePlain]: Different costs {0=[array_4, v_prenex_257, v_prenex_259], 1=[array_0, v_prenex_256, v_prenex_258]} [2021-03-10 21:47:00,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:47:00,507 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:00,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:47:00,515 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:00,753 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-03-10 21:47:00,753 INFO L628 ElimStorePlain]: treesize reduction 31, result has 86.1 percent of original size [2021-03-10 21:47:00,759 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 27 treesize of output 21 [2021-03-10 21:47:00,761 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:00,884 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 21:47:00,885 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:00,891 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 18 treesize of output 14 [2021-03-10 21:47:00,893 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:00,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-03-10 21:47:00,901 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:00,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:00,909 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:00,915 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 29 treesize of output 23 [2021-03-10 21:47:00,918 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:01,021 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-03-10 21:47:01,022 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:01,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:47:01,031 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:01,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,038 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 11 treesize of output 3 [2021-03-10 21:47:01,045 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:01,149 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:47:01,149 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:01,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:01,158 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:01,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:47:01,165 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:01,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:01,284 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:47:01,284 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:01,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,299 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 20 treesize of output 9 [2021-03-10 21:47:01,301 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:01,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:47:01,310 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:01,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:47:01,318 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:01,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:01,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:47:01,327 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:01,421 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:01,425 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 6 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:47:01,426 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 9 variables, input treesize:237, output treesize:57 [2021-03-10 21:47:01,521 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 21:47:01,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:01,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-03-10 21:47:01,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999607843] [2021-03-10 21:47:01,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:47:01,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:01,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:47:01,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:47:01,523 INFO L87 Difference]: Start difference. First operand 173 states and 507 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:01,950 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2021-03-10 21:47:02,269 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-03-10 21:47:02,498 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-03-10 21:47:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:02,658 INFO L93 Difference]: Finished difference Result 219 states and 627 transitions. [2021-03-10 21:47:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 21:47:02,659 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:47:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:02,660 INFO L225 Difference]: With dead ends: 219 [2021-03-10 21:47:02,660 INFO L226 Difference]: Without dead ends: 211 [2021-03-10 21:47:02,660 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1525.7ms TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:47:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-03-10 21:47:02,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 177. [2021-03-10 21:47:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.9488636363636362) internal successors, (519), 176 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 21:47:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 519 transitions. [2021-03-10 21:47:02,662 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 519 transitions. Word has length 17 [2021-03-10 21:47:02,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:02,662 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 519 transitions. [2021-03-10 21:47:02,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 519 transitions. [2021-03-10 21:47:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:47:02,663 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:02,663 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 21:47:02,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable895 [2021-03-10 21:47:02,878 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:47:02,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:02,878 INFO L82 PathProgramCache]: Analyzing trace with hash 419179810, now seen corresponding path program 24 times [2021-03-10 21:47:02,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:02,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052454217] [2021-03-10 21:47:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:03,406 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-10 21:47:03,447 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 21:47:03,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052454217] [2021-03-10 21:47:03,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733894811] [2021-03-10 21:47:03,447 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:03,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:47:03,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:47:03,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:47:03,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:03,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:03,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:03,902 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 15 treesize of output 11 [2021-03-10 21:47:03,904 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:03,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:03,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:47:03,912 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:04,035 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-03-10 21:47:04,036 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:04,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:04,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:04,053 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 15 treesize of output 11 [2021-03-10 21:47:04,054 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:04,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:04,061 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 17 treesize of output 13 [2021-03-10 21:47:04,064 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:04,193 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:47:04,193 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:04,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:04,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:04,201 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 25 treesize of output 19 [2021-03-10 21:47:04,204 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:04,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:04,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:04,212 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:04,327 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:47:04,328 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:04,340 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 6 xjuncts. [2021-03-10 21:47:04,340 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:193, output treesize:169 [2021-03-10 21:47:04,514 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-03-10 21:47:04,947 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_270, v_prenex_272, array_4, v_prenex_274, v_prenex_276], 1=[v_prenex_271, array_2, v_prenex_273, v_prenex_275, v_prenex_269]} [2021-03-10 21:47:04,953 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 25 treesize of output 19 [2021-03-10 21:47:04,954 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:04,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:04,961 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:05,264 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2021-03-10 21:47:05,265 INFO L628 ElimStorePlain]: treesize reduction 134, result has 63.4 percent of original size [2021-03-10 21:47:05,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:47:05,277 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:05,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:47:05,286 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:05,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:47:05,295 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:05,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:47:05,304 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:05,426 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-03-10 21:47:05,427 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:05,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:47:05,436 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:05,551 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-03-10 21:47:05,551 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:05,558 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 7 treesize of output 5 [2021-03-10 21:47:05,560 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:05,674 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:47:05,674 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:05,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:47:05,682 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:05,792 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 21:47:05,793 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:05,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:05,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:05,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:47:05,804 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:05,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:05,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:05,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:05,814 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:05,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:05,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:05,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:47:05,824 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:05,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:05,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:47:05,832 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:05,940 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 21:47:05,941 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:05,941 INFO L518 ElimStorePlain]: Eliminatee array_2 vanished before elimination [2021-03-10 21:47:05,941 INFO L518 ElimStorePlain]: Eliminatee v_prenex_273 vanished before elimination [2021-03-10 21:47:05,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:05,947 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 11 treesize of output 3 [2021-03-10 21:47:05,949 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:06,053 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:47:06,053 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:06,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:06,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:06,061 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 10 treesize of output 5 [2021-03-10 21:47:06,063 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:06,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:06,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:47:06,071 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:06,087 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:06,190 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:47:06,191 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:06,195 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:47:06,195 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 15 variables, input treesize:364, output treesize:62 [2021-03-10 21:47:06,295 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 21:47:06,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:06,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:47:06,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508498875] [2021-03-10 21:47:06,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:47:06,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:06,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:47:06,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:47:06,296 INFO L87 Difference]: Start difference. First operand 177 states and 519 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:06,713 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2021-03-10 21:47:07,037 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2021-03-10 21:47:07,364 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2021-03-10 21:47:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:07,474 INFO L93 Difference]: Finished difference Result 196 states and 564 transitions. [2021-03-10 21:47:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:47:07,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:47:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:07,476 INFO L225 Difference]: With dead ends: 196 [2021-03-10 21:47:07,476 INFO L226 Difference]: Without dead ends: 192 [2021-03-10 21:47:07,476 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1687.8ms TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-03-10 21:47:07,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-03-10 21:47:07,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 175. [2021-03-10 21:47:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 2.954022988505747) internal successors, (514), 174 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:07,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 514 transitions. [2021-03-10 21:47:07,479 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 514 transitions. Word has length 17 [2021-03-10 21:47:07,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:07,479 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 514 transitions. [2021-03-10 21:47:07,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:07,479 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 514 transitions. [2021-03-10 21:47:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:47:07,479 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:07,479 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 21:47:07,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable935,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:07,680 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:47:07,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:07,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2107085562, now seen corresponding path program 25 times [2021-03-10 21:47:07,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:07,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169858339] [2021-03-10 21:47:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:08,133 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-03-10 21:47:08,259 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 21:47:08,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169858339] [2021-03-10 21:47:08,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140967130] [2021-03-10 21:47:08,259 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:08,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:47:08,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:08,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:08,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:08,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:08,468 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:08,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:08,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:08,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:08,477 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:08,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:08,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:08,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:08,487 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:08,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:08,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:47:08,497 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:47:08,630 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 21:47:08,631 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:08,645 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:47:08,645 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:179, output treesize:239 [2021-03-10 21:47:09,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:09,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:09,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:09,219 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:09,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:09,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:09,231 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:09,819 WARN L205 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2021-03-10 21:47:09,819 INFO L628 ElimStorePlain]: treesize reduction 229, result has 63.2 percent of original size [2021-03-10 21:47:09,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:09,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:47:09,831 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:09,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:47:09,840 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:09,860 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:10,117 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-10 21:47:10,117 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:10,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:10,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:10,127 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:10,389 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-03-10 21:47:10,389 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:10,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:47:10,399 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:10,636 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-10 21:47:10,636 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:10,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:10,642 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 11 treesize of output 3 [2021-03-10 21:47:10,643 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:10,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:10,649 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:10,660 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:10,838 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-03-10 21:47:10,839 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:10,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:10,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:10,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:47:10,851 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:10,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:10,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:10,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:47:10,863 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:10,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:10,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:10,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:47:10,874 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:10,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:10,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:10,884 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 28 treesize of output 22 [2021-03-10 21:47:10,887 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:10,894 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:47:10,895 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:10,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:10,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:47:10,905 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:11,296 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2021-03-10 21:47:11,297 INFO L628 ElimStorePlain]: treesize reduction 21, result has 92.6 percent of original size [2021-03-10 21:47:11,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:11,304 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 21 treesize of output 7 [2021-03-10 21:47:11,306 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:11,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:11,314 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 12 treesize of output 5 [2021-03-10 21:47:11,316 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:11,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:11,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:47:11,325 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:11,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:11,333 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 21 treesize of output 7 [2021-03-10 21:47:11,335 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:11,342 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 12 treesize of output 5 [2021-03-10 21:47:11,344 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:11,518 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-03-10 21:47:11,519 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:11,519 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:47:11,523 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 21:47:11,523 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 12 variables, input treesize:621, output treesize:139 [2021-03-10 21:47:11,701 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:47:11,837 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 21:47:11,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:11,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:47:11,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109005374] [2021-03-10 21:47:11,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:47:11,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:11,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:47:11,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:47:11,838 INFO L87 Difference]: Start difference. First operand 175 states and 514 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:12,386 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-03-10 21:47:13,053 WARN L205 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2021-03-10 21:47:13,462 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-03-10 21:47:13,943 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-03-10 21:47:14,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:14,045 INFO L93 Difference]: Finished difference Result 223 states and 632 transitions. [2021-03-10 21:47:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:47:14,046 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:47:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:14,047 INFO L225 Difference]: With dead ends: 223 [2021-03-10 21:47:14,047 INFO L226 Difference]: Without dead ends: 215 [2021-03-10 21:47:14,048 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2630.9ms TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:47:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-03-10 21:47:14,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 174. [2021-03-10 21:47:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.947976878612717) internal successors, (510), 173 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 21:47:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 510 transitions. [2021-03-10 21:47:14,050 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 510 transitions. Word has length 17 [2021-03-10 21:47:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:14,050 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 510 transitions. [2021-03-10 21:47:14,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 510 transitions. [2021-03-10 21:47:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:47:14,051 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:14,051 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 21:47:14,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1023 [2021-03-10 21:47:14,251 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:47:14,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:14,252 INFO L82 PathProgramCache]: Analyzing trace with hash 968096220, now seen corresponding path program 26 times [2021-03-10 21:47:14,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:14,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434713653] [2021-03-10 21:47:14,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:14,547 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-03-10 21:47:14,803 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 21:47:14,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434713653] [2021-03-10 21:47:14,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838523442] [2021-03-10 21:47:14,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:14,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:47:14,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:47:14,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:47:14,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:14,919 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 15 treesize of output 11 [2021-03-10 21:47:14,921 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:14,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:14,925 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:14,928 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 35 treesize of output 27 [2021-03-10 21:47:14,930 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2021-03-10 21:47:14,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:14,934 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:15,058 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:47:15,059 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:15,061 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:47:15,061 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:173, output treesize:229 [2021-03-10 21:47:15,223 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:47:15,516 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-03-10 21:47:15,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:15,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:15,879 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 29 treesize of output 23 [2021-03-10 21:47:15,881 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:15,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:15,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:15,891 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:16,112 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2021-03-10 21:47:16,113 INFO L628 ElimStorePlain]: treesize reduction 114, result has 54.6 percent of original size [2021-03-10 21:47:16,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,122 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 20 treesize of output 16 [2021-03-10 21:47:16,124 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:16,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:47:16,133 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:16,204 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:16,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:47:16,213 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:16,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,220 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 10 treesize of output 5 [2021-03-10 21:47:16,222 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:16,290 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:16,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:47:16,299 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:16,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:16,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,375 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 27 treesize of output 21 [2021-03-10 21:47:16,378 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:16,455 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:16,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:16,465 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:16,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:47:16,473 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:16,490 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:16,541 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:16,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:47:16,546 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:16,589 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:16,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:16,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:47:16,594 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:16,636 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:16,639 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:47:16,639 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 12 variables, input treesize:268, output treesize:43 [2021-03-10 21:47:16,695 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 21:47:16,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:16,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-03-10 21:47:16,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042589378] [2021-03-10 21:47:16,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:47:16,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:16,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:47:16,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:47:16,697 INFO L87 Difference]: Start difference. First operand 174 states and 510 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 21:47:17,141 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2021-03-10 21:47:17,623 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2021-03-10 21:47:18,348 WARN L205 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 104 [2021-03-10 21:47:18,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:18,471 INFO L93 Difference]: Finished difference Result 198 states and 571 transitions. [2021-03-10 21:47:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:47:18,472 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 17 [2021-03-10 21:47:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:18,472 INFO L225 Difference]: With dead ends: 198 [2021-03-10 21:47:18,473 INFO L226 Difference]: Without dead ends: 194 [2021-03-10 21:47:18,473 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2359.6ms TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:47:18,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-03-10 21:47:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 178. [2021-03-10 21:47:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9604519774011298) internal successors, (524), 177 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 524 transitions. [2021-03-10 21:47:18,475 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 524 transitions. Word has length 17 [2021-03-10 21:47:18,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:18,475 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 524 transitions. [2021-03-10 21:47:18,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 21:47:18,475 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 524 transitions. [2021-03-10 21:47:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:47:18,476 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:18,476 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 21:47:18,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1061,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:18,677 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:47:18,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:18,678 INFO L82 PathProgramCache]: Analyzing trace with hash -557813204, now seen corresponding path program 27 times [2021-03-10 21:47:18,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:18,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86453246] [2021-03-10 21:47:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:19,136 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-03-10 21:47:19,311 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 21:47:19,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86453246] [2021-03-10 21:47:19,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149130524] [2021-03-10 21:47:19,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:19,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:47:19,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:47:19,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 21:47:19,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:19,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:19,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:19,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:19,603 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:19,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:19,610 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 25 treesize of output 19 [2021-03-10 21:47:19,612 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:19,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:19,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:19,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:19,707 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 27 treesize of output 21 [2021-03-10 21:47:19,710 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:19,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:19,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:19,719 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:19,771 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:19,778 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:47:19,778 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:134, output treesize:122 [2021-03-10 21:47:20,038 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_306, v_prenex_308, array_4, v_prenex_310], 1=[v_prenex_305, v_prenex_307, array_0, v_prenex_309]} [2021-03-10 21:47:20,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:47:20,048 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:20,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:47:20,058 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:20,065 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 27 treesize of output 21 [2021-03-10 21:47:20,068 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:20,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-03-10 21:47:20,077 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:20,249 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2021-03-10 21:47:20,250 INFO L628 ElimStorePlain]: treesize reduction 145, result has 44.9 percent of original size [2021-03-10 21:47:20,255 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 27 treesize of output 21 [2021-03-10 21:47:20,258 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:20,338 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:20,338 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:47:20,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:20,346 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:20,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:20,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:20,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:20,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:47:20,451 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:20,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:20,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:47:20,460 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:20,548 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:20,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:20,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:20,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:47:20,557 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:20,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:20,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:20,566 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:20,584 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:20,669 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:20,670 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 21:47:20,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:20,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:20,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:20,679 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:20,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:20,685 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 11 treesize of output 3 [2021-03-10 21:47:20,687 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:20,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:20,792 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:20,796 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:47:20,796 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 12 variables, input treesize:289, output treesize:52 [2021-03-10 21:47:20,913 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 21:47:20,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:20,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-03-10 21:47:20,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59735455] [2021-03-10 21:47:20,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:47:20,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:20,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:47:20,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:47:20,914 INFO L87 Difference]: Start difference. First operand 178 states and 524 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:21,368 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2021-03-10 21:47:21,567 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2021-03-10 21:47:21,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:21,757 INFO L93 Difference]: Finished difference Result 209 states and 604 transitions. [2021-03-10 21:47:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:47:21,758 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:47:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:21,759 INFO L225 Difference]: With dead ends: 209 [2021-03-10 21:47:21,759 INFO L226 Difference]: Without dead ends: 205 [2021-03-10 21:47:21,759 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1209.4ms TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:47:21,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-03-10 21:47:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 176. [2021-03-10 21:47:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.9485714285714284) internal successors, (516), 175 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 21:47:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 516 transitions. [2021-03-10 21:47:21,762 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 516 transitions. Word has length 17 [2021-03-10 21:47:21,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:21,762 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 516 transitions. [2021-03-10 21:47:21,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 516 transitions. [2021-03-10 21:47:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:47:21,762 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:21,762 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 21:47:21,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1085,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:21,973 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:47:21,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:21,973 INFO L82 PathProgramCache]: Analyzing trace with hash 153290066, now seen corresponding path program 28 times [2021-03-10 21:47:21,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:21,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805106869] [2021-03-10 21:47:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:22,459 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 21:47:22,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805106869] [2021-03-10 21:47:22,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30929852] [2021-03-10 21:47:22,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:22,481 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:47:22,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:47:22,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:47:22,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:22,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:22,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:22,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2021-03-10 21:47:22,670 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:22,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:22,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 23 [2021-03-10 21:47:22,679 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:22,802 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:47:22,803 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:22,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:22,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:22,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:22,812 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:22,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:22,818 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 19 treesize of output 13 [2021-03-10 21:47:22,820 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:22,935 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 21:47:22,935 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:22,937 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:47:22,938 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:192, output treesize:174 [2021-03-10 21:47:23,082 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 21:47:23,142 INFO L446 ElimStorePlain]: Different costs {0=[array_2], 1=[array_0]} [2021-03-10 21:47:23,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:47:23,152 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:23,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:23,161 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:23,170 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,178 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 15 treesize of output 11 [2021-03-10 21:47:23,179 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,187 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 25 treesize of output 19 [2021-03-10 21:47:23,189 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,197 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 19 treesize of output 15 [2021-03-10 21:47:23,199 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:47:23,209 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 30 [2021-03-10 21:47:23,219 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:23,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:47:23,230 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 4 xjuncts. [2021-03-10 21:47:23,237 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 35 treesize of output 27 [2021-03-10 21:47:23,240 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2021-03-10 21:47:23,706 WARN L205 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2021-03-10 21:47:23,707 INFO L628 ElimStorePlain]: treesize reduction 378, result has 41.0 percent of original size [2021-03-10 21:47:23,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:47:23,716 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:47:23,726 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,745 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:23,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:47:23,755 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:23,765 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:47:23,774 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:23,784 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:23,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:23,792 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:23,811 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:23,979 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-10 21:47:23,980 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:23,983 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-03-10 21:47:23,984 INFO L247 ElimStorePlain]: Needed 18 recursive calls to eliminate 2 variables, input treesize:475, output treesize:176 [2021-03-10 21:47:24,196 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-10 21:47:24,394 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2021-03-10 21:47:24,418 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 21:47:24,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:24,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-03-10 21:47:24,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606989430] [2021-03-10 21:47:24,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:47:24,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:24,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:47:24,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:47:24,419 INFO L87 Difference]: Start difference. First operand 176 states and 516 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:47:24,999 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-03-10 21:47:25,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:25,190 INFO L93 Difference]: Finished difference Result 199 states and 579 transitions. [2021-03-10 21:47:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:47:25,191 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17 [2021-03-10 21:47:25,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:25,192 INFO L225 Difference]: With dead ends: 199 [2021-03-10 21:47:25,192 INFO L226 Difference]: Without dead ends: 195 [2021-03-10 21:47:25,192 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1447.4ms TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:47:25,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-03-10 21:47:25,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 174. [2021-03-10 21:47:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.947976878612717) internal successors, (510), 173 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 21:47:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 510 transitions. [2021-03-10 21:47:25,195 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 510 transitions. Word has length 17 [2021-03-10 21:47:25,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:25,195 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 510 transitions. [2021-03-10 21:47:25,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:47:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 510 transitions. [2021-03-10 21:47:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:47:25,195 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:25,196 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 21:47:25,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1129,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:25,411 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:47:25,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:25,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1175189202, now seen corresponding path program 29 times [2021-03-10 21:47:25,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:25,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056945770] [2021-03-10 21:47:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:25,858 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 21:47:25,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056945770] [2021-03-10 21:47:25,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413509564] [2021-03-10 21:47:25,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:25,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:47:25,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:47:25,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:47:25,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:26,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:26,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:26,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:26,094 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:26,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:26,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:26,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:26,104 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:26,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:26,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:26,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:47:26,116 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2021-03-10 21:47:26,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:26,122 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 25 treesize of output 19 [2021-03-10 21:47:26,125 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:26,301 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 21:47:26,302 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:26,304 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:47:26,304 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:213, output treesize:273 [2021-03-10 21:47:26,526 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 21:47:27,024 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_328, v_prenex_319, array_4, v_prenex_321, v_prenex_324, v_prenex_326], 1=[v_prenex_327, v_prenex_318, array_2, v_prenex_320, v_prenex_323, v_prenex_325]} [2021-03-10 21:47:27,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:27,037 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:27,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:27,050 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:27,498 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 98 [2021-03-10 21:47:27,499 INFO L628 ElimStorePlain]: treesize reduction 127, result has 68.3 percent of original size [2021-03-10 21:47:27,507 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 28 treesize of output 22 [2021-03-10 21:47:27,509 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:27,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:47:27,519 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:27,681 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-03-10 21:47:27,682 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:27,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:47:27,692 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:27,700 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 28 treesize of output 22 [2021-03-10 21:47:27,703 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:27,857 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-03-10 21:47:27,858 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:27,865 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 7 treesize of output 5 [2021-03-10 21:47:27,867 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:28,010 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-03-10 21:47:28,011 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:28,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:47:28,024 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:28,164 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-03-10 21:47:28,164 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:28,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:28,173 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:28,331 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-03-10 21:47:28,331 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:28,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:28,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:28,342 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 10 treesize of output 5 [2021-03-10 21:47:28,344 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:28,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:28,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:47:28,355 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:28,374 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:28,526 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-03-10 21:47:28,527 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:28,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:28,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:28,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:47:28,540 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:28,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:28,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:28,550 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:28,699 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 21:47:28,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:28,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:28,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:28,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 11 [2021-03-10 21:47:28,712 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:28,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:28,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:28,722 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:28,870 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:47:28,870 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:28,870 INFO L518 ElimStorePlain]: Eliminatee v_prenex_320 vanished before elimination [2021-03-10 21:47:28,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:28,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:47:28,879 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:28,996 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-03-10 21:47:28,996 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:29,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:29,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:29,001 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 21 treesize of output 7 [2021-03-10 21:47:29,003 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:29,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:29,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:47:29,008 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:29,018 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:29,099 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:29,103 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 21:47:29,103 INFO L247 ElimStorePlain]: Needed 19 recursive calls to eliminate 18 variables, input treesize:399, output treesize:83 [2021-03-10 21:47:29,171 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 21:47:29,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:29,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:47:29,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30324610] [2021-03-10 21:47:29,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:47:29,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:29,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:47:29,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:47:29,172 INFO L87 Difference]: Start difference. First operand 174 states and 510 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:29,664 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2021-03-10 21:47:30,187 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-03-10 21:47:30,455 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2021-03-10 21:47:30,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:30,551 INFO L93 Difference]: Finished difference Result 201 states and 585 transitions. [2021-03-10 21:47:30,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:47:30,552 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:47:30,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:30,553 INFO L225 Difference]: With dead ends: 201 [2021-03-10 21:47:30,553 INFO L226 Difference]: Without dead ends: 197 [2021-03-10 21:47:30,553 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1839.1ms TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:47:30,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-03-10 21:47:30,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 176. [2021-03-10 21:47:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.9485714285714284) internal successors, (516), 175 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 21:47:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 516 transitions. [2021-03-10 21:47:30,556 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 516 transitions. Word has length 17 [2021-03-10 21:47:30,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:30,556 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 516 transitions. [2021-03-10 21:47:30,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 516 transitions. [2021-03-10 21:47:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:47:30,556 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:30,556 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 21:47:30,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1149 [2021-03-10 21:47:30,760 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:47:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1517772714, now seen corresponding path program 30 times [2021-03-10 21:47:30,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:30,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114748301] [2021-03-10 21:47:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:31,012 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-03-10 21:47:31,072 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 21:47:31,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114748301] [2021-03-10 21:47:31,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055588031] [2021-03-10 21:47:31,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:31,094 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-03-10 21:47:31,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:47:31,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:47:31,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:31,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:31,323 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:31,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:31,335 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:31,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:31,346 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:31,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:47:31,355 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:31,473 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 21:47:31,474 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:31,485 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:47:31,485 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:179, output treesize:169 [2021-03-10 21:47:31,858 INFO L446 ElimStorePlain]: Different costs {1=[array_0], 36=[array_2]} [2021-03-10 21:47:31,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:31,872 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:31,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,883 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 17 treesize of output 13 [2021-03-10 21:47:31,885 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:31,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:31,898 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:31,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:47:31,913 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:31,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:31,927 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:31,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,937 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 29 treesize of output 23 [2021-03-10 21:47:31,940 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:31,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,951 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 25 treesize of output 19 [2021-03-10 21:47:31,954 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:31,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,965 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 38 treesize of output 30 [2021-03-10 21:47:31,968 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:31,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,980 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 19 treesize of output 15 [2021-03-10 21:47:31,983 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:31,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:31,992 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 35 treesize of output 27 [2021-03-10 21:47:31,996 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2021-03-10 21:47:32,566 WARN L205 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 90 [2021-03-10 21:47:32,567 INFO L628 ElimStorePlain]: treesize reduction 171, result has 72.1 percent of original size [2021-03-10 21:47:32,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:47:32,580 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:32,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,590 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 20 treesize of output 9 [2021-03-10 21:47:32,593 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:32,613 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:32,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,624 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 11 treesize of output 3 [2021-03-10 21:47:32,626 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:32,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:32,638 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:32,659 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:32,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:47:32,671 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:32,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 15 [2021-03-10 21:47:32,684 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:32,714 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:32,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:32,723 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:32,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:47:32,734 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:32,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,745 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 24 treesize of output 9 [2021-03-10 21:47:32,748 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:32,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,758 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 12 treesize of output 5 [2021-03-10 21:47:32,760 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:32,781 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:32,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:32,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:47:32,793 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:33,091 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 21:47:33,092 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:33,098 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:47:33,099 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 10 variables, input treesize:518, output treesize:261 [2021-03-10 21:47:33,486 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2021-03-10 21:47:33,644 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 21:47:33,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:33,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-03-10 21:47:33,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289882639] [2021-03-10 21:47:33,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:47:33,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:33,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:47:33,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:47:33,645 INFO L87 Difference]: Start difference. First operand 176 states and 516 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:47:33,966 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-03-10 21:47:34,293 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-03-10 21:47:34,545 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-03-10 21:47:34,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:34,650 INFO L93 Difference]: Finished difference Result 199 states and 579 transitions. [2021-03-10 21:47:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:47:34,652 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 17 [2021-03-10 21:47:34,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:34,652 INFO L225 Difference]: With dead ends: 199 [2021-03-10 21:47:34,652 INFO L226 Difference]: Without dead ends: 195 [2021-03-10 21:47:34,653 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1560.0ms TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:47:34,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-03-10 21:47:34,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 176. [2021-03-10 21:47:34,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.9485714285714284) internal successors, (516), 175 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 21:47:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 516 transitions. [2021-03-10 21:47:34,655 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 516 transitions. Word has length 17 [2021-03-10 21:47:34,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:34,655 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 516 transitions. [2021-03-10 21:47:34,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:47:34,655 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 516 transitions. [2021-03-10 21:47:34,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:47:34,656 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:34,656 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 21:47:34,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1183 [2021-03-10 21:47:34,856 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:47:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:34,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1096748704, now seen corresponding path program 31 times [2021-03-10 21:47:34,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:34,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677813488] [2021-03-10 21:47:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:35,295 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-10 21:47:35,430 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 21:47:35,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677813488] [2021-03-10 21:47:35,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874446357] [2021-03-10 21:47:35,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:35,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:47:35,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:35,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:35,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:35,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:35,874 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:35,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:35,881 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 25 treesize of output 19 [2021-03-10 21:47:35,884 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:35,999 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:47:35,999 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:36,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:47:36,010 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:36,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:36,020 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:36,134 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:47:36,135 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:36,146 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:47:36,146 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:155, output treesize:143 [2021-03-10 21:47:36,526 INFO L446 ElimStorePlain]: Different costs {1=[array_4], 10=[array_0]} [2021-03-10 21:47:36,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:47:36,536 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:36,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:36,547 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:36,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:47:36,558 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:36,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:47:36,569 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:47:36,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:36,580 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:36,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,589 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 27 treesize of output 21 [2021-03-10 21:47:36,592 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:36,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,602 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 25 treesize of output 19 [2021-03-10 21:47:36,605 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:36,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:36,618 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:36,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:36,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 29 [2021-03-10 21:47:36,630 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:36,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:47:36,641 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:37,261 WARN L205 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2021-03-10 21:47:37,262 INFO L628 ElimStorePlain]: treesize reduction 148, result has 71.4 percent of original size [2021-03-10 21:47:37,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:47:37,274 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:37,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:47:37,286 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:37,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,296 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 21 treesize of output 7 [2021-03-10 21:47:37,298 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:37,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,307 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 21 treesize of output 7 [2021-03-10 21:47:37,310 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:37,330 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:37,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:47:37,343 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:37,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:47:37,355 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:37,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 11 [2021-03-10 21:47:37,367 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:37,393 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:37,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:47:37,405 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:37,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:37,417 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:37,439 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:37,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:47:37,451 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:37,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:37,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:47:37,461 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:37,491 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:37,749 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-03-10 21:47:37,749 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:37,754 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:47:37,755 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:419, output treesize:179 [2021-03-10 21:47:38,132 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-03-10 21:47:38,265 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 21:47:38,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:38,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:47:38,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78832085] [2021-03-10 21:47:38,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:47:38,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:38,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:47:38,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:47:38,266 INFO L87 Difference]: Start difference. First operand 176 states and 516 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:38,631 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-03-10 21:47:39,124 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-03-10 21:47:39,645 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2021-03-10 21:47:40,225 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-03-10 21:47:40,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:40,371 INFO L93 Difference]: Finished difference Result 230 states and 669 transitions. [2021-03-10 21:47:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:47:40,372 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:47:40,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:40,373 INFO L225 Difference]: With dead ends: 230 [2021-03-10 21:47:40,373 INFO L226 Difference]: Without dead ends: 226 [2021-03-10 21:47:40,374 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2665.9ms TimeCoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:47:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-03-10 21:47:40,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 183. [2021-03-10 21:47:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.9505494505494507) internal successors, (537), 182 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 537 transitions. [2021-03-10 21:47:40,376 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 537 transitions. Word has length 17 [2021-03-10 21:47:40,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:40,376 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 537 transitions. [2021-03-10 21:47:40,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 537 transitions. [2021-03-10 21:47:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:47:40,377 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:40,377 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 21:47:40,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1223 [2021-03-10 21:47:40,577 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:47:40,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:40,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1716980722, now seen corresponding path program 32 times [2021-03-10 21:47:40,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:40,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324991875] [2021-03-10 21:47:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:40,944 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 21:47:40,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324991875] [2021-03-10 21:47:40,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550497245] [2021-03-10 21:47:40,945 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 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:40,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:47:40,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:47:40,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:47:40,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:41,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:41,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:41,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:41,415 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:41,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:41,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:41,423 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 35 treesize of output 27 [2021-03-10 21:47:41,426 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:47:41,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:41,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:41,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:41,437 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:41,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:41,445 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 25 treesize of output 19 [2021-03-10 21:47:41,447 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:41,638 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 21:47:41,638 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:41,657 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:47:41,657 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:179, output treesize:239 [2021-03-10 21:47:42,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,077 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 17 treesize of output 13 [2021-03-10 21:47:42,080 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:42,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:42,092 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:42,574 WARN L205 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2021-03-10 21:47:42,575 INFO L628 ElimStorePlain]: treesize reduction 229, result has 62.3 percent of original size [2021-03-10 21:47:42,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:47:42,589 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:42,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:47:42,600 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:42,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:47:42,614 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:42,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:47:42,631 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:42,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:42,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:47:42,644 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:42,651 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:47:42,653 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:43,072 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2021-03-10 21:47:43,073 INFO L628 ElimStorePlain]: treesize reduction 21, result has 93.0 percent of original size [2021-03-10 21:47:43,074 INFO L518 ElimStorePlain]: Eliminatee v_prenex_350 vanished before elimination [2021-03-10 21:47:43,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:43,082 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 21 treesize of output 7 [2021-03-10 21:47:43,084 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:43,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:43,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:47:43,095 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:43,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:43,104 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 12 treesize of output 5 [2021-03-10 21:47:43,106 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:43,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:43,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:47:43,117 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:43,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:43,126 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:43,328 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 21:47:43,329 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:43,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:43,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:43,339 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:43,555 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-03-10 21:47:43,555 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:43,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:43,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:47:43,567 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:43,574 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 10 treesize of output 5 [2021-03-10 21:47:43,576 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:43,596 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:43,808 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:47:43,808 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:43,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:43,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:43,819 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:44,033 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:47:44,033 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:44,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:44,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:44,044 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:44,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:47:44,052 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:44,071 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:44,279 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-03-10 21:47:44,280 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:44,285 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 21:47:44,285 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 12 variables, input treesize:621, output treesize:139 [2021-03-10 21:47:44,490 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:47:44,645 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 21:47:44,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:44,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:47:44,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558382994] [2021-03-10 21:47:44,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:47:44,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:44,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:47:44,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:47:44,646 INFO L87 Difference]: Start difference. First operand 183 states and 537 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:45,342 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2021-03-10 21:47:45,859 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2021-03-10 21:47:46,394 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-03-10 21:47:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:46,593 INFO L93 Difference]: Finished difference Result 229 states and 667 transitions. [2021-03-10 21:47:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:47:46,594 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:47:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:46,595 INFO L225 Difference]: With dead ends: 229 [2021-03-10 21:47:46,595 INFO L226 Difference]: Without dead ends: 225 [2021-03-10 21:47:46,595 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2189.8ms TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:47:46,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-03-10 21:47:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 180. [2021-03-10 21:47:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9497206703910615) internal successors, (528), 179 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 21:47:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 528 transitions. [2021-03-10 21:47:46,598 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 528 transitions. Word has length 17 [2021-03-10 21:47:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:46,598 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 528 transitions. [2021-03-10 21:47:46,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 528 transitions. [2021-03-10 21:47:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:47:46,598 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:46,598 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 21:47:46,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1262,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:46,800 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:47:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:46,800 INFO L82 PathProgramCache]: Analyzing trace with hash 2006531768, now seen corresponding path program 33 times [2021-03-10 21:47:46,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:46,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509386683] [2021-03-10 21:47:46,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:47,284 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-03-10 21:47:47,486 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 21:47:47,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509386683] [2021-03-10 21:47:47,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220350261] [2021-03-10 21:47:47,487 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 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:47,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:47:47,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:47:47,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:47:47,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:47,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:47,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:47,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:47:47,869 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:47:47,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:47,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:47,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:47,880 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:47,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:47,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:47,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:47,891 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:47,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:47,899 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 15 treesize of output 11 [2021-03-10 21:47:47,901 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:48,081 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 21:47:48,082 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:48,099 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:47:48,099 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:159, output treesize:219 [2021-03-10 21:47:48,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:48,589 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 25 treesize of output 19 [2021-03-10 21:47:48,592 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:48,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:48,607 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:49,406 WARN L205 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 128 [2021-03-10 21:47:49,407 INFO L628 ElimStorePlain]: treesize reduction 221, result has 63.6 percent of original size [2021-03-10 21:47:49,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:49,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:49,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:47:49,422 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:49,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:49,433 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 28 treesize of output 22 [2021-03-10 21:47:49,436 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:50,135 WARN L205 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 124 [2021-03-10 21:47:50,136 INFO L628 ElimStorePlain]: treesize reduction 11, result has 97.1 percent of original size [2021-03-10 21:47:50,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:50,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:50,151 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:50,500 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-03-10 21:47:50,501 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:50,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:50,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:50,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:47:50,517 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:50,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:50,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:47:50,530 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:51,161 WARN L205 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 118 [2021-03-10 21:47:51,162 INFO L628 ElimStorePlain]: treesize reduction 10, result has 97.2 percent of original size [2021-03-10 21:47:51,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:51,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:51,170 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:51,177 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 11 treesize of output 3 [2021-03-10 21:47:51,178 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:51,191 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:51,384 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-03-10 21:47:51,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:51,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:51,395 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 21 treesize of output 7 [2021-03-10 21:47:51,398 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:51,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:47:51,410 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:51,706 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-10 21:47:51,707 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:51,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:51,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:47:51,720 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:51,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:47:51,731 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:52,035 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-03-10 21:47:52,036 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:52,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:52,045 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 30 treesize of output 24 [2021-03-10 21:47:52,048 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:52,662 WARN L205 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2021-03-10 21:47:52,663 INFO L628 ElimStorePlain]: treesize reduction 5, result has 98.2 percent of original size [2021-03-10 21:47:52,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:47:52,678 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:52,979 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-10 21:47:52,980 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:52,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:52,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:47:52,994 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:53,279 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-03-10 21:47:53,279 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:53,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:47:53,290 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:53,569 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 21:47:53,570 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:53,577 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 7 treesize of output 5 [2021-03-10 21:47:53,581 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:53,847 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 21:47:53,848 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:53,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:53,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:53,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:47:53,860 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:53,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:53,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:47:53,871 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:53,893 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:54,134 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:47:54,135 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:54,135 INFO L518 ElimStorePlain]: Eliminatee v_prenex_359 vanished before elimination [2021-03-10 21:47:54,140 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 21:47:54,140 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 21 variables, input treesize:605, output treesize:155 [2021-03-10 21:47:54,354 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-03-10 21:47:54,519 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 21:47:54,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:47:54,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-03-10 21:47:54,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821206242] [2021-03-10 21:47:54,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:47:54,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:47:54,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:47:54,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:47:54,521 INFO L87 Difference]: Start difference. First operand 180 states and 528 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:56,046 WARN L205 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2021-03-10 21:47:56,614 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 100 [2021-03-10 21:47:56,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:47:56,755 INFO L93 Difference]: Finished difference Result 280 states and 800 transitions. [2021-03-10 21:47:56,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:47:56,756 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:47:56,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:47:56,757 INFO L225 Difference]: With dead ends: 280 [2021-03-10 21:47:56,757 INFO L226 Difference]: Without dead ends: 276 [2021-03-10 21:47:56,757 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 2585.0ms TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:47:56,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-03-10 21:47:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 186. [2021-03-10 21:47:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.983783783783784) internal successors, (552), 185 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 21:47:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 552 transitions. [2021-03-10 21:47:56,760 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 552 transitions. Word has length 17 [2021-03-10 21:47:56,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:47:56,760 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 552 transitions. [2021-03-10 21:47:56,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:47:56,760 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 552 transitions. [2021-03-10 21:47:56,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:47:56,761 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:47:56,761 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 21:47:56,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1296,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:56,975 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:47:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:47:56,975 INFO L82 PathProgramCache]: Analyzing trace with hash 335555752, now seen corresponding path program 34 times [2021-03-10 21:47:56,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:47:56,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950209011] [2021-03-10 21:47:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:47:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:47:57,390 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-03-10 21:47:57,528 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-03-10 21:47:57,670 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 21:47:57,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950209011] [2021-03-10 21:47:57,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174688174] [2021-03-10 21:47:57,671 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 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:47:57,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:47:57,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:47:57,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:47:57,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:47:58,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:58,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:58,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:47:58,387 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:58,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:58,395 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 15 treesize of output 11 [2021-03-10 21:47:58,398 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:58,609 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-10 21:47:58,610 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:58,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:58,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:58,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:47:58,623 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:47:58,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:58,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:58,634 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:58,824 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-03-10 21:47:58,824 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:58,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:58,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:58,830 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 17 treesize of output 13 [2021-03-10 21:47:58,831 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:58,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:47:58,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:47:58,837 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:58,933 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:47:58,942 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 6 xjuncts. [2021-03-10 21:47:58,942 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:223, output treesize:199 [2021-03-10 21:47:59,130 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-03-10 21:47:59,753 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_390, v_prenex_392, v_prenex_384, array_4, v_prenex_386, v_prenex_388], 1=[v_prenex_391, array_2, v_prenex_383, v_prenex_385, v_prenex_387, v_prenex_389]} [2021-03-10 21:47:59,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:47:59,766 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:47:59,777 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 15 treesize of output 11 [2021-03-10 21:47:59,779 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:00,488 WARN L205 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 87 [2021-03-10 21:48:00,489 INFO L628 ElimStorePlain]: treesize reduction 137, result has 61.8 percent of original size [2021-03-10 21:48:00,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:48:00,500 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:00,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:48:00,511 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:00,691 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-03-10 21:48:00,692 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:00,700 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 7 treesize of output 5 [2021-03-10 21:48:00,703 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:00,874 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 21:48:00,875 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:00,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:48:00,886 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:00,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:48:00,897 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:01,046 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-03-10 21:48:01,046 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:01,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:48:01,053 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:01,140 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:01,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:48:01,147 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:01,231 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:01,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:01,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:01,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:48:01,238 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:01,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:01,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:48:01,245 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:01,382 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 21:48:01,383 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:01,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:01,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:01,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:48:01,396 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:01,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:01,404 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 21 treesize of output 7 [2021-03-10 21:48:01,407 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:01,547 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-03-10 21:48:01,548 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:01,548 INFO L518 ElimStorePlain]: Eliminatee v_prenex_383 vanished before elimination [2021-03-10 21:48:01,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:01,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:01,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:48:01,560 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:01,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:01,568 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 10 treesize of output 5 [2021-03-10 21:48:01,570 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:01,594 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:01,748 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 21:48:01,749 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:01,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:01,758 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 11 treesize of output 3 [2021-03-10 21:48:01,760 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:01,899 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 21:48:01,900 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:01,900 INFO L518 ElimStorePlain]: Eliminatee v_prenex_389 vanished before elimination [2021-03-10 21:48:01,906 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:48:01,906 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 18 variables, input treesize:373, output treesize:71 [2021-03-10 21:48:02,054 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 21:48:02,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:48:02,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:48:02,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39616466] [2021-03-10 21:48:02,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:48:02,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:48:02,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:48:02,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:48:02,055 INFO L87 Difference]: Start difference. First operand 186 states and 552 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:02,470 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-03-10 21:48:02,898 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-03-10 21:48:03,368 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2021-03-10 21:48:04,520 WARN L205 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 120 [2021-03-10 21:48:04,883 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-03-10 21:48:05,226 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2021-03-10 21:48:06,107 WARN L205 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 113 [2021-03-10 21:48:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:48:06,585 INFO L93 Difference]: Finished difference Result 315 states and 872 transitions. [2021-03-10 21:48:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 21:48:06,587 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:48:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:48:06,588 INFO L225 Difference]: With dead ends: 315 [2021-03-10 21:48:06,589 INFO L226 Difference]: Without dead ends: 307 [2021-03-10 21:48:06,589 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 4619.3ms TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2021-03-10 21:48:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-03-10 21:48:06,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 181. [2021-03-10 21:48:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.9722222222222223) internal successors, (535), 180 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 21:48:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 535 transitions. [2021-03-10 21:48:06,598 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 535 transitions. Word has length 17 [2021-03-10 21:48:06,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:48:06,598 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 535 transitions. [2021-03-10 21:48:06,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:06,598 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 535 transitions. [2021-03-10 21:48:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:48:06,598 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:48:06,598 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 21:48:06,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1328,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:48:06,811 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:48:06,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:48:06,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1543000132, now seen corresponding path program 35 times [2021-03-10 21:48:06,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:48:06,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108938088] [2021-03-10 21:48:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:48:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:48:07,304 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-03-10 21:48:07,463 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-03-10 21:48:07,652 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 21:48:07,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108938088] [2021-03-10 21:48:07,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012911484] [2021-03-10 21:48:07,652 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 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:48:07,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:48:07,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:48:07,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:48:07,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:48:07,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:07,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:07,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:48:07,952 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:07,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:07,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:07,962 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 17 treesize of output 13 [2021-03-10 21:48:07,965 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:07,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:07,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:07,974 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 27 treesize of output 21 [2021-03-10 21:48:07,977 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:07,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:07,984 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 21:48:07,987 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:08,162 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:48:08,163 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:08,176 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:48:08,176 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:197, output treesize:187 [2021-03-10 21:48:08,370 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 21:48:09,150 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 89 [2021-03-10 21:48:10,054 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2021-03-10 21:48:10,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:10,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:10,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:48:10,608 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:10,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:10,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:48:10,624 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:11,284 WARN L205 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 114 [2021-03-10 21:48:11,285 INFO L628 ElimStorePlain]: treesize reduction 188, result has 60.4 percent of original size [2021-03-10 21:48:11,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:11,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:48:11,293 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:11,423 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-03-10 21:48:11,423 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:11,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:11,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:11,432 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 28 treesize of output 22 [2021-03-10 21:48:11,433 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:11,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:11,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:48:11,442 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:11,668 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-10 21:48:11,669 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:11,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:11,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:11,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:48:11,684 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:11,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:11,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:48:11,699 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:11,947 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-03-10 21:48:11,948 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:11,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:48:11,962 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:12,212 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-03-10 21:48:12,213 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:12,213 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:48:12,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:12,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:12,226 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 21 treesize of output 17 [2021-03-10 21:48:12,228 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:12,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:12,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:48:12,241 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:12,467 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-03-10 21:48:12,467 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:12,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:12,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:12,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:48:12,481 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:12,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:12,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:48:12,493 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:12,728 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-03-10 21:48:12,728 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:12,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:48:12,740 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:12,963 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 21:48:12,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:12,965 INFO L518 ElimStorePlain]: Eliminatee v_prenex_423 vanished before elimination [2021-03-10 21:48:12,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:12,974 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 27 treesize of output 21 [2021-03-10 21:48:12,978 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:13,205 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-03-10 21:48:13,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:13,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:13,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:13,216 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 10 treesize of output 5 [2021-03-10 21:48:13,219 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:13,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:13,228 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 20 treesize of output 9 [2021-03-10 21:48:13,231 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:13,257 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:13,476 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 21:48:13,477 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:13,484 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 12 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:48:13,485 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 24 variables, input treesize:471, output treesize:62 [2021-03-10 21:48:13,617 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 21:48:13,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:48:13,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-03-10 21:48:13,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835010868] [2021-03-10 21:48:13,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:48:13,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:48:13,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:48:13,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:48:13,618 INFO L87 Difference]: Start difference. First operand 181 states and 535 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:48:13,978 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2021-03-10 21:48:14,295 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2021-03-10 21:48:15,075 WARN L205 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 130 [2021-03-10 21:48:17,151 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 206 DAG size of output: 178 [2021-03-10 21:48:18,002 WARN L205 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 140 [2021-03-10 21:48:18,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:48:18,249 INFO L93 Difference]: Finished difference Result 297 states and 831 transitions. [2021-03-10 21:48:18,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:48:18,252 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17 [2021-03-10 21:48:18,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:48:18,253 INFO L225 Difference]: With dead ends: 297 [2021-03-10 21:48:18,253 INFO L226 Difference]: Without dead ends: 293 [2021-03-10 21:48:18,253 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 5684.4ms TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:48:18,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-03-10 21:48:18,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 180. [2021-03-10 21:48:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9664804469273744) internal successors, (531), 179 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 531 transitions. [2021-03-10 21:48:18,256 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 531 transitions. Word has length 17 [2021-03-10 21:48:18,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:48:18,256 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 531 transitions. [2021-03-10 21:48:18,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:48:18,256 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 531 transitions. [2021-03-10 21:48:18,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:48:18,256 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:48:18,257 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 21:48:18,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1383,71 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:48:18,463 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:48:18,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:48:18,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1980685372, now seen corresponding path program 36 times [2021-03-10 21:48:18,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:48:18,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208596439] [2021-03-10 21:48:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:48:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:48:18,712 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-03-10 21:48:18,925 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-03-10 21:48:19,228 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-03-10 21:48:19,396 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2021-03-10 21:48:19,455 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 21:48:19,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208596439] [2021-03-10 21:48:19,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506169208] [2021-03-10 21:48:19,456 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 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:48:19,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:48:19,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:48:19,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:48:19,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:48:19,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:19,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:19,694 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 25 treesize of output 19 [2021-03-10 21:48:19,697 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:19,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:19,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:19,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:48:19,709 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:19,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:19,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:19,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:48:19,721 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:19,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:19,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:48:19,731 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:19,865 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 21:48:19,866 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:19,868 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:48:19,868 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:137, output treesize:127 [2021-03-10 21:48:20,052 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 21:48:20,272 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 21:48:20,743 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-03-10 21:48:21,160 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_437, v_prenex_439, array_4, v_prenex_441, v_prenex_443, v_prenex_446], 1=[v_prenex_438, array_2, v_prenex_440, v_prenex_442, v_prenex_445, v_prenex_436]} [2021-03-10 21:48:21,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:48:21,170 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:21,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:48:21,179 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:21,711 WARN L205 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2021-03-10 21:48:21,712 INFO L628 ElimStorePlain]: treesize reduction 134, result has 61.7 percent of original size [2021-03-10 21:48:21,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:48:21,725 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:21,733 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 30 treesize of output 24 [2021-03-10 21:48:21,737 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:21,925 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-10 21:48:21,926 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:21,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:48:21,938 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:22,123 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-03-10 21:48:22,124 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:22,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:48:22,136 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:22,341 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-03-10 21:48:22,342 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:22,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:48:22,355 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:22,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:48:22,367 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:22,561 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 21:48:22,562 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:22,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:48:22,574 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:22,761 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-03-10 21:48:22,762 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:22,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:22,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:22,774 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 21 treesize of output 7 [2021-03-10 21:48:22,777 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:22,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:22,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 9 [2021-03-10 21:48:22,793 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:22,977 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-03-10 21:48:22,978 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:22,978 INFO L518 ElimStorePlain]: Eliminatee array_2 vanished before elimination [2021-03-10 21:48:22,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:22,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:22,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:48:22,991 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:22,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:23,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:48:23,003 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:23,032 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:23,213 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-03-10 21:48:23,213 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:23,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:23,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:23,223 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 12 treesize of output 5 [2021-03-10 21:48:23,226 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:23,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:23,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:48:23,237 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:23,411 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 21:48:23,412 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:23,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:23,420 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 11 treesize of output 3 [2021-03-10 21:48:23,422 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:23,597 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:48:23,598 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:23,598 INFO L518 ElimStorePlain]: Eliminatee v_prenex_436 vanished before elimination [2021-03-10 21:48:23,605 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:48:23,605 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 18 variables, input treesize:364, output treesize:62 [2021-03-10 21:48:23,750 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 21:48:23,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:48:23,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:48:23,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434327906] [2021-03-10 21:48:23,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:48:23,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:48:23,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:48:23,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:48:23,751 INFO L87 Difference]: Start difference. First operand 180 states and 531 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:24,363 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2021-03-10 21:48:24,850 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2021-03-10 21:48:25,665 WARN L205 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 95 [2021-03-10 21:48:26,141 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2021-03-10 21:48:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:48:26,271 INFO L93 Difference]: Finished difference Result 275 states and 784 transitions. [2021-03-10 21:48:26,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:48:26,273 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:48:26,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:48:26,274 INFO L225 Difference]: With dead ends: 275 [2021-03-10 21:48:26,274 INFO L226 Difference]: Without dead ends: 271 [2021-03-10 21:48:26,274 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3784.9ms TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:48:26,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-03-10 21:48:26,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 181. [2021-03-10 21:48:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.966666666666667) internal successors, (534), 180 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 21:48:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 534 transitions. [2021-03-10 21:48:26,277 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 534 transitions. Word has length 17 [2021-03-10 21:48:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:48:26,277 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 534 transitions. [2021-03-10 21:48:26,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:26,277 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 534 transitions. [2021-03-10 21:48:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:48:26,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:48:26,278 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 21:48:26,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1470,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:48:26,478 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:48:26,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:48:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash -606047200, now seen corresponding path program 37 times [2021-03-10 21:48:26,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:48:26,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926585499] [2021-03-10 21:48:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:48:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:48:26,851 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-03-10 21:48:26,988 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 21:48:26,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926585499] [2021-03-10 21:48:26,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497803726] [2021-03-10 21:48:26,988 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 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:48:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:48:27,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:48:27,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:48:27,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:27,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:27,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:48:27,140 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:27,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:27,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:27,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:48:27,153 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:27,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:27,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:27,163 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 15 treesize of output 11 [2021-03-10 21:48:27,166 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:27,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:27,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:48:27,177 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:27,330 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 21:48:27,331 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:27,334 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:48:27,334 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:163, output treesize:153 [2021-03-10 21:48:27,514 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 21:48:27,744 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-10 21:48:27,864 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_448, array_4], 1=[array_2, v_prenex_447]} [2021-03-10 21:48:27,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:48:27,876 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:27,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 30 [2021-03-10 21:48:27,890 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:27,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:48:27,904 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:27,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:48:27,916 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:27,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:48:27,929 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2021-03-10 21:48:28,673 WARN L205 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2021-03-10 21:48:28,674 INFO L628 ElimStorePlain]: treesize reduction 237, result has 58.2 percent of original size [2021-03-10 21:48:28,682 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 28 treesize of output 22 [2021-03-10 21:48:28,685 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:28,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:48:28,696 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:28,704 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 7 treesize of output 5 [2021-03-10 21:48:28,708 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:29,528 WARN L205 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-03-10 21:48:29,529 INFO L628 ElimStorePlain]: treesize reduction 66, result has 78.6 percent of original size [2021-03-10 21:48:29,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:48:29,541 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:29,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:48:29,550 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:29,791 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-03-10 21:48:29,792 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:29,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,800 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 11 treesize of output 3 [2021-03-10 21:48:29,803 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:29,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:48:29,816 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:29,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,826 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 24 treesize of output 9 [2021-03-10 21:48:29,829 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:29,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,839 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 20 treesize of output 9 [2021-03-10 21:48:29,841 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:29,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:29,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:48:29,851 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:29,877 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:30,111 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 21:48:30,112 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:30,114 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:48:30,115 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 4 variables, input treesize:436, output treesize:169 [2021-03-10 21:48:30,395 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 21:48:30,597 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 21:48:30,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:48:30,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:48:30,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934470575] [2021-03-10 21:48:30,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:48:30,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:48:30,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:48:30,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:48:30,598 INFO L87 Difference]: Start difference. First operand 181 states and 534 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:31,022 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-03-10 21:48:31,485 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-03-10 21:48:32,098 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-03-10 21:48:32,557 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-03-10 21:48:33,412 WARN L205 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-03-10 21:48:33,832 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2021-03-10 21:48:34,920 WARN L205 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2021-03-10 21:48:35,659 WARN L205 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2021-03-10 21:48:36,704 WARN L205 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2021-03-10 21:48:37,764 WARN L205 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2021-03-10 21:48:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:48:38,005 INFO L93 Difference]: Finished difference Result 286 states and 817 transitions. [2021-03-10 21:48:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 21:48:38,006 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:48:38,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:48:38,007 INFO L225 Difference]: With dead ends: 286 [2021-03-10 21:48:38,007 INFO L226 Difference]: Without dead ends: 282 [2021-03-10 21:48:38,008 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7368.0ms TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-03-10 21:48:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-10 21:48:38,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 177. [2021-03-10 21:48:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.9488636363636362) internal successors, (519), 176 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 21:48:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 519 transitions. [2021-03-10 21:48:38,010 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 519 transitions. Word has length 17 [2021-03-10 21:48:38,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:48:38,010 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 519 transitions. [2021-03-10 21:48:38,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:38,010 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 519 transitions. [2021-03-10 21:48:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:48:38,011 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:48:38,011 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 21:48:38,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1507,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:48:38,212 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:48:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:48:38,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1965452058, now seen corresponding path program 38 times [2021-03-10 21:48:38,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:48:38,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010718273] [2021-03-10 21:48:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:48:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:48:38,529 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-10 21:48:38,836 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 21:48:38,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010718273] [2021-03-10 21:48:38,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633048983] [2021-03-10 21:48:38,836 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 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:48:38,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:48:38,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:48:38,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:48:38,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:48:39,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:39,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:39,590 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 25 treesize of output 19 [2021-03-10 21:48:39,593 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:39,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:39,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:48:39,605 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:39,972 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-03-10 21:48:39,973 INFO L628 ElimStorePlain]: treesize reduction 36, result has 81.1 percent of original size [2021-03-10 21:48:39,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:39,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:39,984 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 27 treesize of output 21 [2021-03-10 21:48:39,987 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:39,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:39,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:48:39,998 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:40,171 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 21:48:40,172 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:40,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:40,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:40,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:48:40,186 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:40,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:40,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:48:40,198 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:40,356 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:48:40,357 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:40,374 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 5 dim-0 vars, and 5 xjuncts. [2021-03-10 21:48:40,374 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:204, output treesize:142 [2021-03-10 21:48:40,575 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2021-03-10 21:48:41,005 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_460, array_4, v_prenex_458], 1=[v_prenex_459, array_0, v_prenex_457]} [2021-03-10 21:48:41,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-03-10 21:48:41,018 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:41,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:48:41,030 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:41,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:48:41,042 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:41,050 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 29 treesize of output 23 [2021-03-10 21:48:41,054 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:41,443 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-03-10 21:48:41,444 INFO L628 ElimStorePlain]: treesize reduction 31, result has 85.3 percent of original size [2021-03-10 21:48:41,451 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 17 treesize of output 13 [2021-03-10 21:48:41,453 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:41,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:48:41,464 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:41,620 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-03-10 21:48:41,621 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:41,628 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 27 treesize of output 21 [2021-03-10 21:48:41,632 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:41,803 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 21:48:41,804 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:41,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:41,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:41,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:48:41,817 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:41,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:41,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:41,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:48:41,830 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:41,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:41,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:41,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:48:41,845 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:41,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:41,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:48:41,856 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:42,049 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:48:42,050 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:42,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:42,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:42,060 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 9 treesize of output 3 [2021-03-10 21:48:42,063 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:42,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:42,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:48:42,074 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:42,261 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 21:48:42,262 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:42,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:42,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:42,273 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 11 treesize of output 3 [2021-03-10 21:48:42,276 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:42,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:42,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:48:42,289 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:42,321 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:42,481 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 21:48:42,482 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:42,485 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 6 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:48:42,485 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 9 variables, input treesize:237, output treesize:57 [2021-03-10 21:48:42,561 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 21:48:42,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:48:42,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-03-10 21:48:42,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176075505] [2021-03-10 21:48:42,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:48:42,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:48:42,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:48:42,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:48:42,562 INFO L87 Difference]: Start difference. First operand 177 states and 519 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:43,186 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2021-03-10 21:48:43,758 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-03-10 21:48:44,090 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-03-10 21:48:44,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:48:44,476 INFO L93 Difference]: Finished difference Result 223 states and 639 transitions. [2021-03-10 21:48:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 21:48:44,478 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:48:44,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:48:44,479 INFO L225 Difference]: With dead ends: 223 [2021-03-10 21:48:44,479 INFO L226 Difference]: Without dead ends: 215 [2021-03-10 21:48:44,479 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2398.6ms TimeCoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:48:44,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-03-10 21:48:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 181. [2021-03-10 21:48:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.95) internal successors, (531), 180 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 531 transitions. [2021-03-10 21:48:44,482 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 531 transitions. Word has length 17 [2021-03-10 21:48:44,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:48:44,482 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 531 transitions. [2021-03-10 21:48:44,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 531 transitions. [2021-03-10 21:48:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:48:44,482 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:48:44,482 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 21:48:44,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1528,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:48:44,683 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:48:44,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:48:44,683 INFO L82 PathProgramCache]: Analyzing trace with hash -848277368, now seen corresponding path program 39 times [2021-03-10 21:48:44,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:48:44,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292023963] [2021-03-10 21:48:44,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:48:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:48:45,098 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-03-10 21:48:45,227 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-03-10 21:48:45,509 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-10 21:48:45,567 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 21:48:45,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292023963] [2021-03-10 21:48:45,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303543679] [2021-03-10 21:48:45,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:48:45,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 21:48:45,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:48:45,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:48:45,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:48:46,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:46,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:46,204 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 17 treesize of output 13 [2021-03-10 21:48:46,208 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:46,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:46,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:48:46,222 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:46,421 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 21:48:46,422 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:46,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:46,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:46,433 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 21:48:46,436 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:46,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:46,445 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 17 treesize of output 13 [2021-03-10 21:48:46,449 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:46,652 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:48:46,653 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:46,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:46,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:46,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:48:46,668 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:46,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:46,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:48:46,681 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:46,886 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:48:46,887 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:46,906 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 6 xjuncts. [2021-03-10 21:48:46,906 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:187, output treesize:163 [2021-03-10 21:48:47,176 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-03-10 21:48:47,551 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_471, array_4, v_prenex_473, v_prenex_475, v_prenex_477], 1=[v_prenex_470, array_2, v_prenex_472, v_prenex_474, v_prenex_476]} [2021-03-10 21:48:47,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:48:47,564 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:47,574 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 21 treesize of output 17 [2021-03-10 21:48:47,577 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:47,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:48:47,591 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:47,600 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 24 [2021-03-10 21:48:47,603 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:48,295 WARN L205 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2021-03-10 21:48:48,297 INFO L628 ElimStorePlain]: treesize reduction 141, result has 58.0 percent of original size [2021-03-10 21:48:48,304 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 27 treesize of output 21 [2021-03-10 21:48:48,308 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:48,510 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 21:48:48,511 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:48,518 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 19 treesize of output 15 [2021-03-10 21:48:48,521 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:48,713 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-03-10 21:48:48,714 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:48,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:48:48,725 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:48,914 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:48:48,915 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:48,923 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 7 treesize of output 5 [2021-03-10 21:48:48,926 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:49,117 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-03-10 21:48:49,118 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:49,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:49,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:49,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:48:49,132 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:49,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:49,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:49,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:48:49,146 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:49,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:49,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:49,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:48:49,160 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:49,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:49,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:48:49,171 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:49,358 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 21:48:49,358 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:49,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:49,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:49,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:48:49,372 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:49,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:49,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:48:49,382 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:49,412 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:49,590 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:48:49,591 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:49,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:49,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:48:49,602 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:49,775 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:48:49,776 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:49,776 INFO L518 ElimStorePlain]: Eliminatee v_prenex_474 vanished before elimination [2021-03-10 21:48:49,776 INFO L518 ElimStorePlain]: Eliminatee v_prenex_476 vanished before elimination [2021-03-10 21:48:49,782 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:48:49,783 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 15 variables, input treesize:364, output treesize:62 [2021-03-10 21:48:49,911 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 21:48:49,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:48:49,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:48:49,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134274349] [2021-03-10 21:48:49,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:48:49,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:48:49,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:48:49,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:48:49,912 INFO L87 Difference]: Start difference. First operand 181 states and 531 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:50,395 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-03-10 21:48:50,917 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2021-03-10 21:48:51,336 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2021-03-10 21:48:51,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:48:51,485 INFO L93 Difference]: Finished difference Result 200 states and 576 transitions. [2021-03-10 21:48:51,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:48:51,488 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:48:51,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:48:51,488 INFO L225 Difference]: With dead ends: 200 [2021-03-10 21:48:51,488 INFO L226 Difference]: Without dead ends: 196 [2021-03-10 21:48:51,489 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2496.6ms TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-03-10 21:48:51,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-03-10 21:48:51,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 179. [2021-03-10 21:48:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.955056179775281) internal successors, (526), 178 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 526 transitions. [2021-03-10 21:48:51,491 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 526 transitions. Word has length 17 [2021-03-10 21:48:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:48:51,491 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 526 transitions. [2021-03-10 21:48:51,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 526 transitions. [2021-03-10 21:48:51,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:48:51,492 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:48:51,492 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 21:48:51,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1568 [2021-03-10 21:48:51,692 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:48:51,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:48:51,693 INFO L82 PathProgramCache]: Analyzing trace with hash 920424556, now seen corresponding path program 40 times [2021-03-10 21:48:51,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:48:51,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241914450] [2021-03-10 21:48:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:48:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:48:52,113 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-03-10 21:48:52,512 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-03-10 21:48:52,790 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-10 21:48:52,847 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 21:48:52,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241914450] [2021-03-10 21:48:52,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969551370] [2021-03-10 21:48:52,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:48:52,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:48:52,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:48:52,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:48:52,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:48:53,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:53,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:53,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:48:53,199 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:53,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:53,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:53,205 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 25 treesize of output 19 [2021-03-10 21:48:53,206 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:53,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:53,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:53,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:48:53,213 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:53,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:53,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:48:53,220 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:48:53,333 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 21:48:53,333 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:53,343 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:48:53,343 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:179, output treesize:239 [2021-03-10 21:48:53,525 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-03-10 21:48:54,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:48:54,145 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:54,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:48:54,162 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:54,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:48:54,178 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:54,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2021-03-10 21:48:54,195 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:54,205 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:48:54,208 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:54,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,222 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 30 treesize of output 24 [2021-03-10 21:48:54,226 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:54,236 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:48:54,239 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:54,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:48:54,254 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:54,968 WARN L205 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2021-03-10 21:48:54,969 INFO L628 ElimStorePlain]: treesize reduction 212, result has 57.0 percent of original size [2021-03-10 21:48:54,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:54,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:48:54,982 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:55,296 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-03-10 21:48:55,297 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:55,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:55,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:48:55,312 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:55,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:48:55,324 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:55,358 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:55,662 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-03-10 21:48:55,663 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:55,672 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 21:48:55,675 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:55,973 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 21:48:55,974 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:55,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:55,984 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 11 treesize of output 3 [2021-03-10 21:48:55,987 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:55,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:55,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:48:56,000 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:56,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:56,010 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 12 treesize of output 5 [2021-03-10 21:48:56,013 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:56,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:56,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:48:56,026 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:56,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:48:56,038 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:56,328 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:48:56,329 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:56,329 INFO L518 ElimStorePlain]: Eliminatee v_prenex_484 vanished before elimination [2021-03-10 21:48:56,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:56,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:48:56,342 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2021-03-10 21:48:56,640 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:48:56,641 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:56,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:48:56,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:48:56,653 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:56,661 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 11 treesize of output 3 [2021-03-10 21:48:56,664 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:48:56,695 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:56,911 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-03-10 21:48:56,912 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:48:56,915 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 21:48:56,915 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 12 variables, input treesize:621, output treesize:139 [2021-03-10 21:48:57,046 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:48:57,258 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 21:48:57,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:48:57,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:48:57,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705727426] [2021-03-10 21:48:57,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:48:57,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:48:57,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:48:57,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:48:57,259 INFO L87 Difference]: Start difference. First operand 179 states and 526 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:48:58,005 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-03-10 21:48:59,261 WARN L205 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2021-03-10 21:48:59,948 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-03-10 21:49:00,778 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-03-10 21:49:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:49:00,859 INFO L93 Difference]: Finished difference Result 227 states and 644 transitions. [2021-03-10 21:49:00,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:49:00,860 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:49:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:49:00,860 INFO L225 Difference]: With dead ends: 227 [2021-03-10 21:49:00,860 INFO L226 Difference]: Without dead ends: 219 [2021-03-10 21:49:00,860 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4518.1ms TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:49:00,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-03-10 21:49:00,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2021-03-10 21:49:00,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9491525423728815) internal successors, (522), 177 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 522 transitions. [2021-03-10 21:49:00,863 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 522 transitions. Word has length 17 [2021-03-10 21:49:00,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:49:00,863 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 522 transitions. [2021-03-10 21:49:00,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:00,863 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 522 transitions. [2021-03-10 21:49:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:49:00,863 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:49:00,863 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 21:49:01,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1616,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:01,065 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:49:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:49:01,065 INFO L82 PathProgramCache]: Analyzing trace with hash -299360958, now seen corresponding path program 41 times [2021-03-10 21:49:01,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:49:01,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602418628] [2021-03-10 21:49:01,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:49:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:49:01,493 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-03-10 21:49:01,732 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-03-10 21:49:01,980 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 21:49:01,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602418628] [2021-03-10 21:49:01,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647469009] [2021-03-10 21:49:01,980 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:02,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:49:02,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:49:02,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:49:02,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:49:02,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:02,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:02,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:02,401 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:02,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:02,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:02,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:49:02,415 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:02,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:02,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:02,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:02,430 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:02,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:02,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:49:02,442 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:02,601 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 21:49:02,602 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:02,618 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:49:02,618 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:155, output treesize:143 [2021-03-10 21:49:03,413 INFO L446 ElimStorePlain]: Different costs {1=[array_4], 36=[array_0]} [2021-03-10 21:49:03,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:03,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:49:03,424 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:03,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:03,432 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 25 treesize of output 19 [2021-03-10 21:49:03,434 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:03,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:03,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:49:03,444 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:03,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:03,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:03,454 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:03,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:03,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 29 [2021-03-10 21:49:03,464 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:03,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:03,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:49:03,476 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:03,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:03,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:03,487 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:03,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:03,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:49:03,504 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:03,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:03,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:03,520 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:03,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:49:03,536 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2021-03-10 21:49:04,399 WARN L205 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2021-03-10 21:49:04,400 INFO L628 ElimStorePlain]: treesize reduction 160, result has 69.1 percent of original size [2021-03-10 21:49:04,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,411 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 20 treesize of output 9 [2021-03-10 21:49:04,414 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:04,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:49:04,429 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:04,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:49:04,444 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:04,474 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:04,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,486 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 11 treesize of output 3 [2021-03-10 21:49:04,489 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:04,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:49:04,504 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:04,533 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:04,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:49:04,548 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:04,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:49:04,564 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:04,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:49:04,579 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:04,630 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:04,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,642 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 12 treesize of output 5 [2021-03-10 21:49:04,644 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:04,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 11 [2021-03-10 21:49:04,660 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:04,692 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:04,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:04,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:49:04,705 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:05,081 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 21:49:05,082 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:05,089 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:49:05,089 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 10 variables, input treesize:419, output treesize:179 [2021-03-10 21:49:05,648 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-03-10 21:49:05,839 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 21:49:05,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:49:05,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-03-10 21:49:05,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589587298] [2021-03-10 21:49:05,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:49:05,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:49:05,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:49:05,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:49:05,840 INFO L87 Difference]: Start difference. First operand 178 states and 522 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:06,528 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-03-10 21:49:07,005 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2021-03-10 21:49:07,513 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2021-03-10 21:49:08,060 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:49:08,478 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:49:08,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:49:08,721 INFO L93 Difference]: Finished difference Result 211 states and 616 transitions. [2021-03-10 21:49:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:49:08,724 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:49:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:49:08,724 INFO L225 Difference]: With dead ends: 211 [2021-03-10 21:49:08,724 INFO L226 Difference]: Without dead ends: 207 [2021-03-10 21:49:08,725 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3863.6ms TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2021-03-10 21:49:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-03-10 21:49:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 180. [2021-03-10 21:49:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9497206703910615) internal successors, (528), 179 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 21:49:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 528 transitions. [2021-03-10 21:49:08,727 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 528 transitions. Word has length 17 [2021-03-10 21:49:08,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:49:08,727 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 528 transitions. [2021-03-10 21:49:08,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:08,727 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 528 transitions. [2021-03-10 21:49:08,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:49:08,728 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:49:08,728 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 21:49:08,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1650 [2021-03-10 21:49:08,928 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:49:08,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:49:08,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1114167112, now seen corresponding path program 42 times [2021-03-10 21:49:08,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:49:08,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104361752] [2021-03-10 21:49:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:49:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:49:09,207 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-10 21:49:09,423 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 21:49:09,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104361752] [2021-03-10 21:49:09,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654183980] [2021-03-10 21:49:09,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:09,444 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:49:09,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:49:09,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 21:49:09,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:49:09,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:49:09,770 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:09,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:09,776 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:09,881 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 21:49:09,882 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:09,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:09,893 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:09,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:09,904 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:10,021 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 21:49:10,022 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:10,025 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:49:10,025 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:123, output treesize:113 [2021-03-10 21:49:10,200 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 21:49:10,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:10,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:10,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:10,516 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:10,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:10,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:10,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 21:49:10,537 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:10,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:10,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:10,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:49:10,559 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:10,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:10,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:10,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:10,580 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:10,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:10,590 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 19 treesize of output 15 [2021-03-10 21:49:10,594 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:11,023 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-03-10 21:49:11,024 INFO L628 ElimStorePlain]: treesize reduction 149, result has 52.5 percent of original size [2021-03-10 21:49:11,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:49:11,038 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:11,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,046 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 11 treesize of output 3 [2021-03-10 21:49:11,050 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:11,233 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:49:11,234 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:11,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:11,250 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:11,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:49:11,266 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:11,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:11,279 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:11,743 WARN L205 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-03-10 21:49:11,745 INFO L628 ElimStorePlain]: treesize reduction 18, result has 89.8 percent of original size [2021-03-10 21:49:11,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:49:11,759 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:11,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:49:11,775 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:11,810 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:11,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:49:11,825 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:11,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:49:11,839 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:11,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:11,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:49:11,852 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:11,886 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:12,107 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 21:49:12,108 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:12,113 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 21:49:12,114 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 6 variables, input treesize:349, output treesize:61 [2021-03-10 21:49:12,313 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 21:49:12,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:49:12,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-03-10 21:49:12,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380597958] [2021-03-10 21:49:12,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:49:12,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:49:12,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:49:12,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:49:12,314 INFO L87 Difference]: Start difference. First operand 180 states and 528 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:13,258 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2021-03-10 21:49:13,552 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2021-03-10 21:49:13,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:49:13,762 INFO L93 Difference]: Finished difference Result 203 states and 591 transitions. [2021-03-10 21:49:13,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:49:13,764 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:49:13,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:49:13,765 INFO L225 Difference]: With dead ends: 203 [2021-03-10 21:49:13,765 INFO L226 Difference]: Without dead ends: 199 [2021-03-10 21:49:13,765 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1718.3ms TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:49:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-03-10 21:49:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 178. [2021-03-10 21:49:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9491525423728815) internal successors, (522), 177 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 522 transitions. [2021-03-10 21:49:13,768 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 522 transitions. Word has length 17 [2021-03-10 21:49:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:49:13,768 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 522 transitions. [2021-03-10 21:49:13,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 522 transitions. [2021-03-10 21:49:13,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:49:13,768 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:49:13,768 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 21:49:13,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1692,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:13,969 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:49:13,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:49:13,969 INFO L82 PathProgramCache]: Analyzing trace with hash -92267976, now seen corresponding path program 43 times [2021-03-10 21:49:13,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:49:13,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402423014] [2021-03-10 21:49:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:49:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:49:14,218 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2021-03-10 21:49:14,371 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-03-10 21:49:14,596 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2021-03-10 21:49:14,897 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 21:49:14,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402423014] [2021-03-10 21:49:14,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602300860] [2021-03-10 21:49:14,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:49:14,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:49:14,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:49:15,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:15,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:15,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:15,313 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:15,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:15,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:15,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:49:15,320 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:49:15,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:15,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:15,326 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 21:49:15,327 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:15,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:15,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:15,334 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:15,455 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:49:15,456 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:15,474 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:49:15,474 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:171, output treesize:231 [2021-03-10 21:49:15,692 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-03-10 21:49:16,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:16,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:16,358 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 27 treesize of output 21 [2021-03-10 21:49:16,362 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:16,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:16,373 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 25 treesize of output 19 [2021-03-10 21:49:16,377 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:17,177 WARN L205 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2021-03-10 21:49:17,178 INFO L628 ElimStorePlain]: treesize reduction 221, result has 63.6 percent of original size [2021-03-10 21:49:17,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:17,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:49:17,186 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:17,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:49:17,194 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:17,210 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:17,640 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 21:49:17,641 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:17,650 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 21:49:17,654 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:18,079 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 21:49:18,080 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:18,080 INFO L518 ElimStorePlain]: Eliminatee v_prenex_506 vanished before elimination [2021-03-10 21:49:18,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:18,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:18,094 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:18,554 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 21:49:18,555 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:18,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:18,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:49:18,569 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:18,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:49:18,581 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:18,613 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:19,083 WARN L205 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-03-10 21:49:19,084 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:19,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:49:19,102 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:19,111 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:49:19,114 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:19,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,127 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 28 treesize of output 22 [2021-03-10 21:49:19,131 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:19,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:49:19,148 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:19,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:49:19,166 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:19,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:49:19,180 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:19,795 WARN L205 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2021-03-10 21:49:19,795 INFO L628 ElimStorePlain]: treesize reduction 21, result has 92.4 percent of original size [2021-03-10 21:49:19,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:49:19,803 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:19,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:49:19,809 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:19,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:49:19,816 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:19,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:19,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:49:19,823 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:19,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:49:19,829 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:20,042 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 21:49:20,043 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:20,051 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 21:49:20,052 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 12 variables, input treesize:605, output treesize:139 [2021-03-10 21:49:20,329 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:49:20,541 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 21:49:20,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:49:20,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:49:20,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275542084] [2021-03-10 21:49:20,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:49:20,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:49:20,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:49:20,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:49:20,542 INFO L87 Difference]: Start difference. First operand 178 states and 522 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:21,113 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-03-10 21:49:21,582 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2021-03-10 21:49:22,187 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-03-10 21:49:22,834 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:49:23,771 WARN L205 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-03-10 21:49:23,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:49:23,779 INFO L93 Difference]: Finished difference Result 215 states and 613 transitions. [2021-03-10 21:49:23,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:49:23,782 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:49:23,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:49:23,783 INFO L225 Difference]: With dead ends: 215 [2021-03-10 21:49:23,783 INFO L226 Difference]: Without dead ends: 211 [2021-03-10 21:49:23,783 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 4008.0ms TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:49:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-03-10 21:49:23,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 182. [2021-03-10 21:49:23,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.972375690607735) internal successors, (538), 181 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 538 transitions. [2021-03-10 21:49:23,785 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 538 transitions. Word has length 17 [2021-03-10 21:49:23,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:49:23,786 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 538 transitions. [2021-03-10 21:49:23,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 538 transitions. [2021-03-10 21:49:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:49:23,786 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:49:23,786 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 21:49:23,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1714,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:23,987 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:49:23,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:49:23,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1763243992, now seen corresponding path program 44 times [2021-03-10 21:49:23,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:49:23,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656309822] [2021-03-10 21:49:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:49:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:49:24,406 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-03-10 21:49:24,683 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 21:49:24,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656309822] [2021-03-10 21:49:24,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212878098] [2021-03-10 21:49:24,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:24,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:49:24,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:49:24,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:49:24,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:49:25,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:25,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:25,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:25,144 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:25,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:25,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:25,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:49:25,159 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:49:25,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:25,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:25,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:49:25,174 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:25,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:25,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:25,188 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:25,455 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:49:25,456 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:25,477 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:49:25,478 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:179, output treesize:239 [2021-03-10 21:49:25,699 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-03-10 21:49:26,446 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2021-03-10 21:49:26,664 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_515, v_prenex_517, array_4, v_prenex_511, v_prenex_513], 1=[v_prenex_514, v_prenex_516, array_2, v_prenex_510, v_prenex_512]} [2021-03-10 21:49:26,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:49:26,678 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:26,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:49:26,695 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:27,054 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2021-03-10 21:49:27,055 INFO L628 ElimStorePlain]: treesize reduction 161, result has 44.9 percent of original size [2021-03-10 21:49:27,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:49:27,067 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:27,179 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-03-10 21:49:27,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:27,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:27,192 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:27,326 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 21:49:27,327 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:27,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:27,339 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:27,497 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 21:49:27,499 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:27,507 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 7 treesize of output 5 [2021-03-10 21:49:27,511 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:27,664 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 21:49:27,665 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:27,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:27,674 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 12 treesize of output 5 [2021-03-10 21:49:27,677 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:27,825 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-03-10 21:49:27,825 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:27,826 INFO L518 ElimStorePlain]: Eliminatee v_prenex_516 vanished before elimination [2021-03-10 21:49:27,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:27,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:27,837 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 11 treesize of output 3 [2021-03-10 21:49:27,841 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:27,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:27,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:49:27,853 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:27,886 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:28,028 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 21:49:28,029 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:28,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:28,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:28,040 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 20 treesize of output 9 [2021-03-10 21:49:28,044 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:28,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:28,053 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 10 treesize of output 5 [2021-03-10 21:49:28,056 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:28,087 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:28,234 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:49:28,235 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:28,235 INFO L518 ElimStorePlain]: Eliminatee v_prenex_512 vanished before elimination [2021-03-10 21:49:28,241 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:49:28,241 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 15 variables, input treesize:311, output treesize:52 [2021-03-10 21:49:28,372 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 21:49:28,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:49:28,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:49:28,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631347741] [2021-03-10 21:49:28,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:49:28,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:49:28,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:49:28,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:49:28,373 INFO L87 Difference]: Start difference. First operand 182 states and 538 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:28,858 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2021-03-10 21:49:29,608 WARN L205 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2021-03-10 21:49:31,249 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2021-03-10 21:49:31,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:49:31,491 INFO L93 Difference]: Finished difference Result 201 states and 576 transitions. [2021-03-10 21:49:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:49:31,492 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:49:31,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:49:31,492 INFO L225 Difference]: With dead ends: 201 [2021-03-10 21:49:31,492 INFO L226 Difference]: Without dead ends: 197 [2021-03-10 21:49:31,492 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 4035.9ms TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:49:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-03-10 21:49:31,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 179. [2021-03-10 21:49:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.955056179775281) internal successors, (526), 178 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 526 transitions. [2021-03-10 21:49:31,495 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 526 transitions. Word has length 17 [2021-03-10 21:49:31,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:49:31,495 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 526 transitions. [2021-03-10 21:49:31,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:31,495 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 526 transitions. [2021-03-10 21:49:31,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:49:31,495 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:49:31,495 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 21:49:31,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1756,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:31,696 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:49:31,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:49:31,696 INFO L82 PathProgramCache]: Analyzing trace with hash 250315536, now seen corresponding path program 45 times [2021-03-10 21:49:31,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:49:31,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191475918] [2021-03-10 21:49:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:49:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:49:32,366 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-03-10 21:49:32,524 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 21:49:32,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191475918] [2021-03-10 21:49:32,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276347114] [2021-03-10 21:49:32,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-10 21:49:32,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-10 21:49:32,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:49:32,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:32,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:49:32,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:32,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:32,926 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:32,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:32,936 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 17 treesize of output 13 [2021-03-10 21:49:32,940 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:32,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:32,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:49:32,952 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:32,958 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 27 treesize of output 21 [2021-03-10 21:49:32,960 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:33,155 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 21:49:33,156 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:33,159 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:49:33,159 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:157, output treesize:147 [2021-03-10 21:49:33,403 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 21:49:34,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:34,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:34,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:34,105 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:34,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:34,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:49:34,121 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:34,789 WARN L205 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2021-03-10 21:49:34,790 INFO L628 ElimStorePlain]: treesize reduction 98, result has 77.0 percent of original size [2021-03-10 21:49:34,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:34,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:34,798 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 9 treesize of output 3 [2021-03-10 21:49:34,799 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:34,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:34,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:34,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:49:34,808 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:34,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:34,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:49:34,816 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:34,831 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:35,179 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-03-10 21:49:35,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:35,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:49:35,194 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:35,554 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-10 21:49:35,556 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:35,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:35,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:35,569 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 19 treesize of output 15 [2021-03-10 21:49:35,573 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:35,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:35,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:35,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 30 [2021-03-10 21:49:35,590 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:35,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:35,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:35,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:49:35,609 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:35,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:35,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:49:35,625 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:36,068 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-03-10 21:49:36,069 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:36,069 INFO L518 ElimStorePlain]: Eliminatee array_2 vanished before elimination [2021-03-10 21:49:36,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,083 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 23 treesize of output 11 [2021-03-10 21:49:36,086 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:36,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:49:36,104 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:36,166 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:36,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:49:36,183 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:36,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,197 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 24 treesize of output 9 [2021-03-10 21:49:36,200 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:36,238 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:36,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,252 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 21 treesize of output 7 [2021-03-10 21:49:36,255 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:36,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:49:36,270 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:36,696 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 21:49:36,697 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:36,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:36,712 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:36,952 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 21:49:36,952 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:36,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:49:36,961 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:36,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:36,967 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 11 treesize of output 3 [2021-03-10 21:49:36,969 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:36,985 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:37,359 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-03-10 21:49:37,360 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:37,368 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 21:49:37,368 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 12 variables, input treesize:424, output treesize:176 [2021-03-10 21:49:37,985 WARN L205 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-03-10 21:49:38,216 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:49:38,236 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 21:49:38,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:49:38,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:49:38,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472841079] [2021-03-10 21:49:38,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:49:38,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:49:38,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:49:38,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:49:38,238 INFO L87 Difference]: Start difference. First operand 179 states and 526 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:39,033 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2021-03-10 21:49:39,433 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-03-10 21:49:39,789 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-10 21:49:40,620 WARN L205 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2021-03-10 21:49:41,438 WARN L205 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-03-10 21:49:41,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:49:41,698 INFO L93 Difference]: Finished difference Result 211 states and 605 transitions. [2021-03-10 21:49:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:49:41,700 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:49:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:49:41,701 INFO L225 Difference]: With dead ends: 211 [2021-03-10 21:49:41,701 INFO L226 Difference]: Without dead ends: 203 [2021-03-10 21:49:41,701 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 4329.6ms TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:49:41,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-03-10 21:49:41,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 180. [2021-03-10 21:49:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9497206703910615) internal successors, (528), 179 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 21:49:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 528 transitions. [2021-03-10 21:49:41,703 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 528 transitions. Word has length 17 [2021-03-10 21:49:41,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:49:41,703 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 528 transitions. [2021-03-10 21:49:41,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:41,704 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 528 transitions. [2021-03-10 21:49:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:49:41,704 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:49:41,704 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 21:49:41,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1793 [2021-03-10 21:49:41,915 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:49:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:49:41,915 INFO L82 PathProgramCache]: Analyzing trace with hash -377744742, now seen corresponding path program 46 times [2021-03-10 21:49:41,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:49:41,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993951233] [2021-03-10 21:49:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:49:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:49:42,565 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 21:49:42,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993951233] [2021-03-10 21:49:42,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901502813] [2021-03-10 21:49:42,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:42,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:49:42,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:49:42,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:49:42,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:49:42,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:42,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:42,885 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 27 treesize of output 21 [2021-03-10 21:49:42,889 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:42,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:42,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:42,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:49:42,904 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:42,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:42,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:42,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:49:42,917 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:42,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:42,925 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 15 treesize of output 11 [2021-03-10 21:49:42,928 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:43,099 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 21:49:43,100 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:43,103 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:49:43,103 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:155, output treesize:145 [2021-03-10 21:49:43,347 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 21:49:43,800 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-03-10 21:49:44,318 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_536, v_prenex_538, array_4, v_prenex_540, v_prenex_543, v_prenex_534], 1=[v_prenex_537, v_prenex_539, array_2, v_prenex_542, v_prenex_533, v_prenex_535]} [2021-03-10 21:49:44,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:49:44,332 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:44,342 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 28 treesize of output 22 [2021-03-10 21:49:44,346 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:44,931 WARN L205 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 90 [2021-03-10 21:49:44,933 INFO L628 ElimStorePlain]: treesize reduction 141, result has 60.2 percent of original size [2021-03-10 21:49:44,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:49:44,946 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:45,148 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-03-10 21:49:45,149 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:45,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:45,163 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:45,400 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-03-10 21:49:45,401 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:45,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:49:45,415 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:45,425 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 19 treesize of output 15 [2021-03-10 21:49:45,428 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:45,647 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-10 21:49:45,648 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:45,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:49:45,663 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:45,875 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-03-10 21:49:45,876 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:45,885 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 7 treesize of output 5 [2021-03-10 21:49:45,889 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:46,105 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 21:49:46,106 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:46,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:46,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:49:46,120 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:46,354 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 21:49:46,355 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:46,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:46,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:46,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:49:46,372 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:46,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:46,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:49:46,386 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:46,610 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:49:46,611 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:46,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:46,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:46,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:49:46,627 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:46,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:46,637 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 10 treesize of output 5 [2021-03-10 21:49:46,641 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:46,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:46,896 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-03-10 21:49:46,897 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:46,898 INFO L518 ElimStorePlain]: Eliminatee v_prenex_542 vanished before elimination [2021-03-10 21:49:46,898 INFO L518 ElimStorePlain]: Eliminatee v_prenex_533 vanished before elimination [2021-03-10 21:49:46,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:46,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:46,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:49:46,913 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:46,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:46,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:49:46,927 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:47,083 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:49:47,083 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:47,088 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:49:47,088 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 18 variables, input treesize:367, output treesize:67 [2021-03-10 21:49:47,180 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 21:49:47,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:49:47,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:49:47,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101996216] [2021-03-10 21:49:47,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:49:47,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:49:47,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:49:47,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:49:47,181 INFO L87 Difference]: Start difference. First operand 180 states and 528 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:47,906 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-03-10 21:49:48,276 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-03-10 21:49:49,205 WARN L205 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2021-03-10 21:49:49,935 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-03-10 21:49:51,085 WARN L205 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2021-03-10 21:49:51,414 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 21:49:51,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:49:51,516 INFO L93 Difference]: Finished difference Result 214 states and 601 transitions. [2021-03-10 21:49:51,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 21:49:51,519 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:49:51,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:49:51,519 INFO L225 Difference]: With dead ends: 214 [2021-03-10 21:49:51,519 INFO L226 Difference]: Without dead ends: 206 [2021-03-10 21:49:51,520 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 4530.6ms TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-03-10 21:49:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-03-10 21:49:51,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 177. [2021-03-10 21:49:51,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.9488636363636362) internal successors, (519), 176 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 21:49:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 519 transitions. [2021-03-10 21:49:51,522 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 519 transitions. Word has length 17 [2021-03-10 21:49:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:49:51,522 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 519 transitions. [2021-03-10 21:49:51,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:49:51,522 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 519 transitions. [2021-03-10 21:49:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:49:51,523 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:49:51,523 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 21:49:51,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1857,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:51,723 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:49:51,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:49:51,724 INFO L82 PathProgramCache]: Analyzing trace with hash -326980856, now seen corresponding path program 47 times [2021-03-10 21:49:51,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:49:51,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203543645] [2021-03-10 21:49:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:49:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:49:52,014 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-03-10 21:49:52,139 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2021-03-10 21:49:52,326 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 21:49:52,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203543645] [2021-03-10 21:49:52,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918367673] [2021-03-10 21:49:52,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:49:52,350 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:49:52,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:49:52,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:49:52,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:49:52,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:52,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:52,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:52,753 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:52,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:52,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:52,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:49:52,769 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:52,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:52,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:52,780 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 25 treesize of output 19 [2021-03-10 21:49:52,784 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:52,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:52,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:49:52,797 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:53,041 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 21:49:53,042 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:53,063 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:49:53,063 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:183, output treesize:173 [2021-03-10 21:49:54,132 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 86 [2021-03-10 21:49:54,790 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-03-10 21:49:55,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:55,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:55,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:49:55,317 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:49:55,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:55,333 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 17 treesize of output 13 [2021-03-10 21:49:55,337 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:56,056 WARN L205 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 81 [2021-03-10 21:49:56,058 INFO L628 ElimStorePlain]: treesize reduction 222, result has 49.9 percent of original size [2021-03-10 21:49:56,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:49:56,072 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:56,339 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-10 21:49:56,340 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:56,340 INFO L518 ElimStorePlain]: Eliminatee v_prenex_570 vanished before elimination [2021-03-10 21:49:56,340 INFO L518 ElimStorePlain]: Eliminatee v_prenex_571 vanished before elimination [2021-03-10 21:49:56,340 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:49:56,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:56,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:56,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:49:56,357 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:56,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:56,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:49:56,373 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:56,784 WARN L205 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2021-03-10 21:49:56,785 INFO L628 ElimStorePlain]: treesize reduction 30, result has 84.9 percent of original size [2021-03-10 21:49:56,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:56,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:49:56,799 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:56,992 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-03-10 21:49:56,993 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:57,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:57,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:57,004 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 30 treesize of output 24 [2021-03-10 21:49:57,008 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:57,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:57,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:49:57,022 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:57,351 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-03-10 21:49:57,352 INFO L628 ElimStorePlain]: treesize reduction 11, result has 92.6 percent of original size [2021-03-10 21:49:57,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:57,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:57,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:49:57,367 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:57,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:57,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:49:57,380 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:57,550 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-03-10 21:49:57,551 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:57,551 INFO L518 ElimStorePlain]: Eliminatee v_prenex_566 vanished before elimination [2021-03-10 21:49:57,551 INFO L518 ElimStorePlain]: Eliminatee v_prenex_567 vanished before elimination [2021-03-10 21:49:57,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:49:57,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:49:57,563 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:49:57,732 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:49:57,733 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:49:57,740 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 12 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-03-10 21:49:57,740 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 24 variables, input treesize:439, output treesize:31 [2021-03-10 21:49:57,917 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 21:49:57,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:49:57,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-03-10 21:49:57,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113837625] [2021-03-10 21:49:57,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:49:57,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:49:57,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:49:57,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:49:57,918 INFO L87 Difference]: Start difference. First operand 177 states and 519 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:49:58,441 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-03-10 21:49:58,814 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-03-10 21:49:59,491 WARN L205 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 127 [2021-03-10 21:50:01,283 WARN L205 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 206 DAG size of output: 168 [2021-03-10 21:50:02,334 WARN L205 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 137 [2021-03-10 21:50:02,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:50:02,698 INFO L93 Difference]: Finished difference Result 248 states and 714 transitions. [2021-03-10 21:50:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:50:02,702 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 17 [2021-03-10 21:50:02,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:50:02,703 INFO L225 Difference]: With dead ends: 248 [2021-03-10 21:50:02,703 INFO L226 Difference]: Without dead ends: 244 [2021-03-10 21:50:02,703 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4980.0ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-03-10 21:50:02,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-03-10 21:50:02,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 181. [2021-03-10 21:50:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.9611111111111112) internal successors, (533), 180 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:50:02,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 533 transitions. [2021-03-10 21:50:02,706 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 533 transitions. Word has length 17 [2021-03-10 21:50:02,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:50:02,706 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 533 transitions. [2021-03-10 21:50:02,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:50:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 533 transitions. [2021-03-10 21:50:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:50:02,707 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:50:02,707 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 21:50:02,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1895 [2021-03-10 21:50:02,907 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:50:02,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:50:02,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1746561620, now seen corresponding path program 48 times [2021-03-10 21:50:02,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:50:02,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480289606] [2021-03-10 21:50:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:50:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:50:03,116 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-10 21:50:03,360 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-03-10 21:50:03,510 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-03-10 21:50:03,642 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-03-10 21:50:03,715 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 21:50:03,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480289606] [2021-03-10 21:50:03,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413727525] [2021-03-10 21:50:03,716 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:03,738 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:50:03,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:50:03,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 21:50:03,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:50:04,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:04,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:04,016 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 25 treesize of output 19 [2021-03-10 21:50:04,018 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:04,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:04,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:04,026 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:04,108 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:04,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:04,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:04,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:04,119 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:04,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:04,127 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 15 treesize of output 11 [2021-03-10 21:50:04,131 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:04,269 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-10 21:50:04,274 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:04,292 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:50:04,292 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:126, output treesize:116 [2021-03-10 21:50:04,712 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-03-10 21:50:05,327 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_581, array_4, v_prenex_583, v_prenex_585, v_prenex_579], 1=[array_2, v_prenex_580, v_prenex_582, v_prenex_584, v_prenex_578]} [2021-03-10 21:50:05,338 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 15 treesize of output 11 [2021-03-10 21:50:05,342 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:05,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:05,359 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:05,917 WARN L205 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-03-10 21:50:05,918 INFO L628 ElimStorePlain]: treesize reduction 93, result has 69.3 percent of original size [2021-03-10 21:50:05,928 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 19 treesize of output 15 [2021-03-10 21:50:05,932 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:05,941 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 21 treesize of output 17 [2021-03-10 21:50:05,945 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:06,101 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 21:50:06,101 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:06,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:06,109 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:06,226 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 21:50:06,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:06,234 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 30 treesize of output 24 [2021-03-10 21:50:06,236 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:06,246 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 28 treesize of output 22 [2021-03-10 21:50:06,250 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:06,478 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 21:50:06,479 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:06,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:06,493 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:06,735 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 21:50:06,736 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:06,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:06,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:06,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:50:06,752 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:06,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:06,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:50:06,767 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:07,027 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 21:50:07,028 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:07,028 INFO L518 ElimStorePlain]: Eliminatee v_prenex_580 vanished before elimination [2021-03-10 21:50:07,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:07,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:07,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:50:07,046 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:07,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:07,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:50:07,060 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:07,101 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:07,358 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 21:50:07,359 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:07,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:07,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:07,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:50:07,376 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:07,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:07,385 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 21 treesize of output 7 [2021-03-10 21:50:07,389 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:07,646 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-03-10 21:50:07,647 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:07,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:07,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:07,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:50:07,664 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:07,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:07,674 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 11 treesize of output 3 [2021-03-10 21:50:07,677 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:07,711 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:07,880 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:50:07,881 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:07,887 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:50:07,887 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 15 variables, input treesize:317, output treesize:70 [2021-03-10 21:50:07,989 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 21:50:07,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:50:07,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-03-10 21:50:07,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270703135] [2021-03-10 21:50:07,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:50:07,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:50:07,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:50:07,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:50:07,990 INFO L87 Difference]: Start difference. First operand 181 states and 533 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:50:08,670 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-03-10 21:50:08,859 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2021-03-10 21:50:09,325 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-03-10 21:50:10,379 WARN L205 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2021-03-10 21:50:11,280 WARN L205 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2021-03-10 21:50:11,935 WARN L205 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2021-03-10 21:50:12,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:50:12,347 INFO L93 Difference]: Finished difference Result 266 states and 768 transitions. [2021-03-10 21:50:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:50:12,350 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:50:12,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:50:12,350 INFO L225 Difference]: With dead ends: 266 [2021-03-10 21:50:12,350 INFO L226 Difference]: Without dead ends: 262 [2021-03-10 21:50:12,351 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 4411.5ms TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:50:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-03-10 21:50:12,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 179. [2021-03-10 21:50:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.949438202247191) internal successors, (525), 178 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 21:50:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 525 transitions. [2021-03-10 21:50:12,353 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 525 transitions. Word has length 17 [2021-03-10 21:50:12,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:50:12,353 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 525 transitions. [2021-03-10 21:50:12,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:50:12,353 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 525 transitions. [2021-03-10 21:50:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:50:12,354 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:50:12,354 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 21:50:12,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1972 [2021-03-10 21:50:12,554 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:50:12,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:50:12,555 INFO L82 PathProgramCache]: Analyzing trace with hash 947967822, now seen corresponding path program 49 times [2021-03-10 21:50:12,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:50:12,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798478272] [2021-03-10 21:50:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:50:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:50:12,760 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 21:50:12,892 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-10 21:50:13,175 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2021-03-10 21:50:13,390 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-03-10 21:50:13,468 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 21:50:13,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798478272] [2021-03-10 21:50:13,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599111853] [2021-03-10 21:50:13,468 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 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:50:13,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:50:13,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:50:13,891 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 21:50:14,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:14,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:14,101 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 25 treesize of output 19 [2021-03-10 21:50:14,105 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:14,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:14,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:14,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:50:14,122 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:50:14,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:14,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:14,134 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 15 treesize of output 11 [2021-03-10 21:50:14,138 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:14,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:14,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:14,152 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:14,474 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:50:14,475 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:14,499 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:50:14,499 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:179, output treesize:239 [2021-03-10 21:50:14,751 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-03-10 21:50:15,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:15,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:15,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:50:15,519 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:15,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:15,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:15,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:50:15,538 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:15,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:15,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:15,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:50:15,557 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:15,566 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:50:15,570 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:15,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:50:15,583 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:15,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:15,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:15,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:50:15,602 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:15,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:15,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:15,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:50:15,623 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:15,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:15,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2021-03-10 21:50:15,643 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:16,315 WARN L205 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2021-03-10 21:50:16,316 INFO L628 ElimStorePlain]: treesize reduction 212, result has 57.0 percent of original size [2021-03-10 21:50:16,326 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 7 treesize of output 5 [2021-03-10 21:50:16,331 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:16,675 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 21:50:16,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:16,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:16,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:50:16,688 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:16,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:16,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:50:16,703 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:16,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:16,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:50:16,719 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:16,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:16,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:50:16,734 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:16,744 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 21 treesize of output 7 [2021-03-10 21:50:16,748 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:17,105 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-03-10 21:50:17,106 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:17,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:17,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:17,121 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:17,509 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-03-10 21:50:17,510 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:17,510 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:50:17,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:17,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:50:17,526 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:17,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:50:17,539 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:17,584 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:17,950 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:50:17,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:17,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:17,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:17,965 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:18,336 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:50:18,338 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:18,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:18,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:50:18,353 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:18,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:50:18,367 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:18,406 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:18,785 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-03-10 21:50:18,786 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:18,792 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 21:50:18,793 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 12 variables, input treesize:621, output treesize:139 [2021-03-10 21:50:19,152 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:50:19,362 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 21:50:19,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:50:19,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:50:19,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121126525] [2021-03-10 21:50:19,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:50:19,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:50:19,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:50:19,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:50:19,363 INFO L87 Difference]: Start difference. First operand 179 states and 525 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:50:19,869 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2021-03-10 21:50:20,349 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-03-10 21:50:21,127 WARN L205 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2021-03-10 21:50:21,783 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:50:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:50:22,080 INFO L93 Difference]: Finished difference Result 213 states and 621 transitions. [2021-03-10 21:50:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:50:22,084 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:50:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:50:22,084 INFO L225 Difference]: With dead ends: 213 [2021-03-10 21:50:22,084 INFO L226 Difference]: Without dead ends: 209 [2021-03-10 21:50:22,084 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3730.2ms TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:50:22,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-03-10 21:50:22,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 181. [2021-03-10 21:50:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.95) internal successors, (531), 180 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:50:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 531 transitions. [2021-03-10 21:50:22,087 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 531 transitions. Word has length 17 [2021-03-10 21:50:22,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:50:22,087 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 531 transitions. [2021-03-10 21:50:22,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:50:22,087 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 531 transitions. [2021-03-10 21:50:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:50:22,088 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:50:22,088 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 21:50:22,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2011,85 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:22,288 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:50:22,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:50:22,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1290551334, now seen corresponding path program 50 times [2021-03-10 21:50:22,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:50:22,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716601049] [2021-03-10 21:50:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:50:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:50:22,586 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-03-10 21:50:22,738 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-03-10 21:50:22,888 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-03-10 21:50:22,928 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 21:50:22,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716601049] [2021-03-10 21:50:22,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815649805] [2021-03-10 21:50:22,929 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 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:22,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:50:22,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:50:22,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:50:22,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:50:23,279 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 21:50:23,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:23,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:23,341 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:23,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:23,351 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 27 treesize of output 21 [2021-03-10 21:50:23,356 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:23,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:23,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:50:23,370 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:23,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:50:23,382 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:23,598 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 21:50:23,599 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:23,602 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:50:23,602 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:149, output treesize:139 [2021-03-10 21:50:23,896 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 21:50:24,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:24,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:24,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:50:24,368 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:24,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:24,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:24,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:24,388 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:24,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:24,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:24,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:24,411 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:24,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:24,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:24,425 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 38 treesize of output 30 [2021-03-10 21:50:24,430 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:24,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:24,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:50:24,446 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2021-03-10 21:50:25,486 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2021-03-10 21:50:25,488 INFO L628 ElimStorePlain]: treesize reduction 226, result has 57.7 percent of original size [2021-03-10 21:50:25,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:50:25,506 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:25,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:50:25,523 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:25,584 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:25,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:50:25,602 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:25,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:50:25,621 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:25,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,635 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 21 treesize of output 7 [2021-03-10 21:50:25,639 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:25,679 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:25,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,693 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 20 treesize of output 9 [2021-03-10 21:50:25,697 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:25,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:25,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:50:25,712 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:25,751 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:26,185 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-03-10 21:50:26,186 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:26,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:50:26,199 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:26,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:26,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:26,213 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 19 treesize of output 15 [2021-03-10 21:50:26,217 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:26,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:26,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:50:26,232 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:26,632 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 21:50:26,633 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:26,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:26,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:26,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:50:26,650 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:26,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:26,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:50:26,664 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:27,032 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:50:27,033 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:27,036 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:50:27,037 INFO L247 ElimStorePlain]: Needed 18 recursive calls to eliminate 6 variables, input treesize:404, output treesize:140 [2021-03-10 21:50:27,204 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:50:27,450 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:50:27,473 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 21:50:27,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:50:27,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-03-10 21:50:27,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107630182] [2021-03-10 21:50:27,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:50:27,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:50:27,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:50:27,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:50:27,474 INFO L87 Difference]: Start difference. First operand 181 states and 531 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:50:28,109 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2021-03-10 21:50:28,663 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-03-10 21:50:29,494 WARN L205 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-03-10 21:50:30,340 WARN L205 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-03-10 21:50:31,098 WARN L205 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-03-10 21:50:31,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:50:31,247 INFO L93 Difference]: Finished difference Result 219 states and 629 transitions. [2021-03-10 21:50:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:50:31,251 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:50:31,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:50:31,251 INFO L225 Difference]: With dead ends: 219 [2021-03-10 21:50:31,251 INFO L226 Difference]: Without dead ends: 211 [2021-03-10 21:50:31,252 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4157.0ms TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:50:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-03-10 21:50:31,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 179. [2021-03-10 21:50:31,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.949438202247191) internal successors, (525), 178 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 21:50:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 525 transitions. [2021-03-10 21:50:31,254 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 525 transitions. Word has length 17 [2021-03-10 21:50:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:50:31,254 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 525 transitions. [2021-03-10 21:50:31,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:50:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 525 transitions. [2021-03-10 21:50:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:50:31,255 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:50:31,255 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 21:50:31,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2053,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:31,471 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:50:31,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:50:31,471 INFO L82 PathProgramCache]: Analyzing trace with hash -2132806164, now seen corresponding path program 51 times [2021-03-10 21:50:31,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:50:31,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534113962] [2021-03-10 21:50:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:50:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:50:31,782 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2021-03-10 21:50:32,241 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 21:50:32,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534113962] [2021-03-10 21:50:32,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866046187] [2021-03-10 21:50:32,241 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 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:32,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:50:32,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:50:32,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:50:32,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:50:32,583 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:50:32,803 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 21:50:32,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:32,916 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:32,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:32,931 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:33,145 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-03-10 21:50:33,146 INFO L628 ElimStorePlain]: treesize reduction 20, result has 82.8 percent of original size [2021-03-10 21:50:33,154 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 15 treesize of output 11 [2021-03-10 21:50:33,158 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:33,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:33,170 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:33,264 INFO L628 ElimStorePlain]: treesize reduction 44, result has 46.3 percent of original size [2021-03-10 21:50:33,266 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 21:50:33,267 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:116, output treesize:38 [2021-03-10 21:50:33,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:33,510 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:33,518 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 20 treesize of output 16 [2021-03-10 21:50:33,523 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:33,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:50:33,535 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:33,542 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 18 treesize of output 14 [2021-03-10 21:50:33,546 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:33,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:50:33,556 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:33,641 INFO L628 ElimStorePlain]: treesize reduction 5, result has 83.9 percent of original size [2021-03-10 21:50:33,641 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:50:33,643 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:50:33,643 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:102, output treesize:26 [2021-03-10 21:50:33,765 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 21:50:33,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:50:33,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-03-10 21:50:33,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831165405] [2021-03-10 21:50:33,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 21:50:33,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:50:33,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 21:50:33,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:50:33,766 INFO L87 Difference]: Start difference. First operand 179 states and 525 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 21:50:34,226 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-03-10 21:50:34,755 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2021-03-10 21:50:35,101 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:50:35,372 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2021-03-10 21:50:35,960 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-03-10 21:50:36,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:50:36,327 INFO L93 Difference]: Finished difference Result 297 states and 830 transitions. [2021-03-10 21:50:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 21:50:36,331 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 17 [2021-03-10 21:50:36,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:50:36,331 INFO L225 Difference]: With dead ends: 297 [2021-03-10 21:50:36,331 INFO L226 Difference]: Without dead ends: 289 [2021-03-10 21:50:36,331 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2869.8ms TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2021-03-10 21:50:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-03-10 21:50:36,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 184. [2021-03-10 21:50:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9508196721311477) internal successors, (540), 183 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:50:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 540 transitions. [2021-03-10 21:50:36,334 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 540 transitions. Word has length 17 [2021-03-10 21:50:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:50:36,334 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 540 transitions. [2021-03-10 21:50:36,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 21:50:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 540 transitions. [2021-03-10 21:50:36,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:50:36,335 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:50:36,335 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 21:50:36,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2079 [2021-03-10 21:50:36,539 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:50:36,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:50:36,539 INFO L82 PathProgramCache]: Analyzing trace with hash 213094778, now seen corresponding path program 52 times [2021-03-10 21:50:36,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:50:36,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666365655] [2021-03-10 21:50:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:50:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:50:36,827 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-03-10 21:50:37,330 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-10 21:50:37,506 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-03-10 21:50:37,574 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 21:50:37,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666365655] [2021-03-10 21:50:37,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637620245] [2021-03-10 21:50:37,574 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 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:37,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:50:37,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:50:37,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:50:37,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:50:38,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:38,021 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:38,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:38,035 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:38,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:50:38,048 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:38,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:50:38,061 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:38,214 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:50:38,215 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:38,218 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:50:38,218 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:123, output treesize:111 [2021-03-10 21:50:38,433 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:50:38,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:38,559 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 27 treesize of output 21 [2021-03-10 21:50:38,564 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:38,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:38,574 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 28 treesize of output 22 [2021-03-10 21:50:38,578 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:38,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:38,590 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 21:50:38,594 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:38,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:38,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 29 [2021-03-10 21:50:38,609 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:38,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:38,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:50:38,625 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2021-03-10 21:50:38,633 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:50:38,636 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:38,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:38,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:38,652 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:38,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:38,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:38,667 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:38,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:38,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:38,683 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:38,693 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 18 treesize of output 14 [2021-03-10 21:50:38,697 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:39,229 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2021-03-10 21:50:39,230 INFO L628 ElimStorePlain]: treesize reduction 177, result has 57.8 percent of original size [2021-03-10 21:50:39,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:39,236 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 10 treesize of output 5 [2021-03-10 21:50:39,238 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:39,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:39,245 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 20 treesize of output 9 [2021-03-10 21:50:39,248 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:39,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:39,256 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 21 treesize of output 7 [2021-03-10 21:50:39,259 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:39,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:39,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:50:39,273 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:39,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:39,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:39,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:50:39,332 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:39,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:39,342 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 44 treesize of output 19 [2021-03-10 21:50:39,346 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:39,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:39,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:50:39,360 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:39,405 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:39,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:39,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:50:39,420 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:39,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:50:39,433 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:39,473 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:39,784 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:50:39,785 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:39,788 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:50:39,789 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 2 variables, input treesize:343, output treesize:143 [2021-03-10 21:50:40,182 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:50:40,401 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:50:40,425 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 21:50:40,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:50:40,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-03-10 21:50:40,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719213067] [2021-03-10 21:50:40,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:50:40,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:50:40,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:50:40,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:50:40,426 INFO L87 Difference]: Start difference. First operand 184 states and 540 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:50:40,991 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-03-10 21:50:41,271 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2021-03-10 21:50:41,717 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2021-03-10 21:50:42,354 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-03-10 21:50:43,148 WARN L205 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-03-10 21:50:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:50:43,326 INFO L93 Difference]: Finished difference Result 224 states and 652 transitions. [2021-03-10 21:50:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:50:43,330 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 17 [2021-03-10 21:50:43,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:50:43,331 INFO L225 Difference]: With dead ends: 224 [2021-03-10 21:50:43,331 INFO L226 Difference]: Without dead ends: 220 [2021-03-10 21:50:43,331 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3959.0ms TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2021-03-10 21:50:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-03-10 21:50:43,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 187. [2021-03-10 21:50:43,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9516129032258065) internal successors, (549), 186 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 21:50:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 549 transitions. [2021-03-10 21:50:43,339 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 549 transitions. Word has length 17 [2021-03-10 21:50:43,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:50:43,339 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 549 transitions. [2021-03-10 21:50:43,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:50:43,339 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 549 transitions. [2021-03-10 21:50:43,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:50:43,339 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:50:43,339 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 21:50:43,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2098,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:43,540 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:50:43,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:50:43,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1694332648, now seen corresponding path program 53 times [2021-03-10 21:50:43,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:50:43,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203139729] [2021-03-10 21:50:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:50:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:50:43,794 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-10 21:50:44,128 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-03-10 21:50:44,202 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 21:50:44,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203139729] [2021-03-10 21:50:44,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044368351] [2021-03-10 21:50:44,203 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 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:44,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:50:44,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:50:44,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:50:44,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:50:44,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:44,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:50:44,503 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:50:44,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:44,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:44,511 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:44,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:44,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:50:44,518 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:44,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:44,525 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:44,723 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:50:44,724 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:44,727 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:50:44,728 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:151, output treesize:211 [2021-03-10 21:50:45,052 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:50:45,158 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_602, v_prenex_604, array_2, v_prenex_600], 1=[v_prenex_603, v_prenex_605, array_4, v_prenex_601]} [2021-03-10 21:50:45,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:45,173 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:45,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:45,187 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:46,089 WARN L205 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2021-03-10 21:50:46,090 INFO L628 ElimStorePlain]: treesize reduction 191, result has 63.6 percent of original size [2021-03-10 21:50:46,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:50:46,104 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:46,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:50:46,120 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:46,130 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 30 treesize of output 24 [2021-03-10 21:50:46,133 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:46,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:50:46,148 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:46,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:50:46,162 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:46,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:50:46,176 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:46,820 WARN L205 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2021-03-10 21:50:46,821 INFO L628 ElimStorePlain]: treesize reduction 49, result has 83.2 percent of original size [2021-03-10 21:50:46,830 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 7 treesize of output 5 [2021-03-10 21:50:46,835 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:47,144 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 21:50:47,146 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:47,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:50:47,158 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:47,375 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-03-10 21:50:47,375 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:47,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:47,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:50:47,383 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:47,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:50:47,390 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:47,408 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:47,661 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 21:50:47,662 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:47,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:47,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:50:47,677 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:47,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:47,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:50:47,691 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:47,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:47,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:50:47,705 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:47,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:47,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:50:47,719 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:47,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:50:47,731 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:48,018 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:50:48,019 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:48,020 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:50:48,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:48,029 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 20 treesize of output 9 [2021-03-10 21:50:48,033 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:48,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:50:48,044 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:48,085 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:48,391 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:50:48,392 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:48,395 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:50:48,396 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 8 variables, input treesize:521, output treesize:139 [2021-03-10 21:50:48,765 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:50:49,003 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:50:49,027 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 21:50:49,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:50:49,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-03-10 21:50:49,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983648275] [2021-03-10 21:50:49,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:50:49,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:50:49,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:50:49,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:50:49,028 INFO L87 Difference]: Start difference. First operand 187 states and 549 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:50:49,503 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2021-03-10 21:50:49,854 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2021-03-10 21:50:50,224 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2021-03-10 21:50:51,125 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2021-03-10 21:50:52,011 WARN L205 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-03-10 21:50:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:50:52,201 INFO L93 Difference]: Finished difference Result 223 states and 650 transitions. [2021-03-10 21:50:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:50:52,205 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 17 [2021-03-10 21:50:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:50:52,206 INFO L225 Difference]: With dead ends: 223 [2021-03-10 21:50:52,206 INFO L226 Difference]: Without dead ends: 219 [2021-03-10 21:50:52,206 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 3878.6ms TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:50:52,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-03-10 21:50:52,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 179. [2021-03-10 21:50:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.949438202247191) internal successors, (525), 178 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 21:50:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 525 transitions. [2021-03-10 21:50:52,209 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 525 transitions. Word has length 17 [2021-03-10 21:50:52,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:50:52,209 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 525 transitions. [2021-03-10 21:50:52,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:50:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 525 transitions. [2021-03-10 21:50:52,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:50:52,210 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:50:52,210 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 21:50:52,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2116,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:52,411 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:50:52,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:50:52,411 INFO L82 PathProgramCache]: Analyzing trace with hash 672434372, now seen corresponding path program 54 times [2021-03-10 21:50:52,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:50:52,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583411996] [2021-03-10 21:50:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:50:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:50:52,582 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2021-03-10 21:50:52,759 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-03-10 21:50:53,101 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 21:50:53,270 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2021-03-10 21:50:53,563 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 21:50:53,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583411996] [2021-03-10 21:50:53,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075687535] [2021-03-10 21:50:53,563 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 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:50:53,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:50:53,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:50:53,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:50:53,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:50:53,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:53,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:53,980 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 15 treesize of output 11 [2021-03-10 21:50:53,985 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:53,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:53,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:54,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:50:54,005 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:50:54,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:54,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:54,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:54,025 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:54,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:54,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:50:54,041 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:54,391 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:50:54,392 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:54,421 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:50:54,421 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:179, output treesize:235 [2021-03-10 21:50:54,713 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 21:50:55,114 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2021-03-10 21:50:55,910 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:50:56,171 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_613, v_prenex_615, array_0, v_prenex_617], 1=[v_prenex_614, v_prenex_616, v_prenex_618, array_4]} [2021-03-10 21:50:56,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:50:56,185 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:56,194 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 27 treesize of output 21 [2021-03-10 21:50:56,199 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:56,620 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2021-03-10 21:50:56,622 INFO L628 ElimStorePlain]: treesize reduction 114, result has 54.6 percent of original size [2021-03-10 21:50:56,631 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 27 treesize of output 21 [2021-03-10 21:50:56,636 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:50:56,845 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 21:50:56,846 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:56,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:50:56,859 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:57,052 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-03-10 21:50:57,053 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:57,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-03-10 21:50:57,067 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:57,076 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 18 treesize of output 14 [2021-03-10 21:50:57,080 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:57,213 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-03-10 21:50:57,214 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:57,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:57,220 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 12 treesize of output 5 [2021-03-10 21:50:57,222 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:57,304 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:57,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:57,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:57,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:50:57,314 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:57,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:57,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:50:57,321 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:57,340 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:57,452 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:50:57,453 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:57,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:57,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:57,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:50:57,470 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:57,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:57,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:50:57,485 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:57,659 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:50:57,661 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:57,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:50:57,670 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 11 treesize of output 3 [2021-03-10 21:50:57,674 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:50:57,822 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 21:50:57,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:50:57,831 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:50:57,831 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 12 variables, input treesize:268, output treesize:43 [2021-03-10 21:50:58,021 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 21:50:58,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:50:58,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:50:58,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089603148] [2021-03-10 21:50:58,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:50:58,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:50:58,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:50:58,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:50:58,022 INFO L87 Difference]: Start difference. First operand 179 states and 525 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:50:58,532 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 25 [2021-03-10 21:50:59,247 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-03-10 21:51:00,504 WARN L205 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 92 [2021-03-10 21:51:01,662 WARN L205 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 83 [2021-03-10 21:51:03,367 WARN L205 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 127 DAG size of output: 101 [2021-03-10 21:51:03,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:51:03,584 INFO L93 Difference]: Finished difference Result 246 states and 702 transitions. [2021-03-10 21:51:03,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:51:03,587 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:51:03,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:51:03,588 INFO L225 Difference]: With dead ends: 246 [2021-03-10 21:51:03,588 INFO L226 Difference]: Without dead ends: 242 [2021-03-10 21:51:03,588 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 6685.3ms TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:51:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-03-10 21:51:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 187. [2021-03-10 21:51:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9731182795698925) internal successors, (553), 186 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:51:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 553 transitions. [2021-03-10 21:51:03,590 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 553 transitions. Word has length 17 [2021-03-10 21:51:03,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:51:03,591 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 553 transitions. [2021-03-10 21:51:03,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:51:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 553 transitions. [2021-03-10 21:51:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:51:03,591 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:51:03,591 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 21:51:03,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2134,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:51:03,792 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:51:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:51:03,792 INFO L82 PathProgramCache]: Analyzing trace with hash -8917584, now seen corresponding path program 55 times [2021-03-10 21:51:03,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:51:03,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814069784] [2021-03-10 21:51:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:51:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:51:03,949 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-03-10 21:51:04,127 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-03-10 21:51:04,300 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 21:51:04,643 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 21:51:04,725 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 21:51:04,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814069784] [2021-03-10 21:51:04,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003772027] [2021-03-10 21:51:04,726 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 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:51:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:51:04,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:51:04,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:51:05,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:05,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:05,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:05,152 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:05,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:05,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:05,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:51:05,175 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:05,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:05,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:05,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:51:05,194 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2021-03-10 21:51:05,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:05,205 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 25 treesize of output 19 [2021-03-10 21:51:05,210 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:05,542 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-03-10 21:51:05,543 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:05,570 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:51:05,570 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:209, output treesize:265 [2021-03-10 21:51:05,837 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-10 21:51:06,631 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-03-10 21:51:07,237 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2021-03-10 21:51:08,021 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_635, v_prenex_637, array_0, v_prenex_627, v_prenex_629, v_prenex_631, v_prenex_633], 1=[v_prenex_636, v_prenex_638, v_prenex_628, array_4, v_prenex_630, v_prenex_632, v_prenex_634]} [2021-03-10 21:51:08,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:51:08,034 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:08,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:51:08,052 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:08,944 WARN L205 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 109 [2021-03-10 21:51:08,945 INFO L628 ElimStorePlain]: treesize reduction 176, result has 61.4 percent of original size [2021-03-10 21:51:08,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:51:08,963 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:09,300 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-03-10 21:51:09,301 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:09,313 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 29 treesize of output 23 [2021-03-10 21:51:09,317 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:09,655 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-03-10 21:51:09,656 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:09,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:51:09,673 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:51:10,035 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-03-10 21:51:10,037 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:10,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:51:10,053 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:51:10,336 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-03-10 21:51:10,337 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:10,345 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 29 treesize of output 23 [2021-03-10 21:51:10,348 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:10,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:51:10,358 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:10,632 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-03-10 21:51:10,633 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:10,645 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 21:51:10,650 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:10,988 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-03-10 21:51:10,989 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:11,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:11,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:11,005 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 20 treesize of output 9 [2021-03-10 21:51:11,010 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:11,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:11,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:51:11,027 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:11,410 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-10 21:51:11,411 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:11,411 INFO L518 ElimStorePlain]: Eliminatee v_prenex_638 vanished before elimination [2021-03-10 21:51:11,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:11,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:11,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:51:11,432 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:11,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:11,445 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 11 treesize of output 3 [2021-03-10 21:51:11,449 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:11,496 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:11,875 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-10 21:51:11,877 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:11,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:11,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:51:11,894 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:12,264 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-03-10 21:51:12,265 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:12,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:12,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:12,280 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 11 treesize of output 3 [2021-03-10 21:51:12,285 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:12,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:12,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:51:12,301 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:12,347 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:12,723 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-03-10 21:51:12,724 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:12,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:12,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:12,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:51:12,742 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:12,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:12,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:51:12,759 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:13,075 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 21:51:13,076 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:13,076 INFO L518 ElimStorePlain]: Eliminatee v_prenex_634 vanished before elimination [2021-03-10 21:51:13,082 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-03-10 21:51:13,082 INFO L247 ElimStorePlain]: Needed 19 recursive calls to eliminate 21 variables, input treesize:468, output treesize:106 [2021-03-10 21:51:13,264 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2021-03-10 21:51:13,297 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 21:51:13,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:51:13,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:51:13,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591497224] [2021-03-10 21:51:13,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:51:13,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:51:13,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:51:13,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:51:13,298 INFO L87 Difference]: Start difference. First operand 187 states and 553 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:51:14,008 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-03-10 21:51:14,247 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 21:51:15,008 WARN L205 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2021-03-10 21:51:18,232 WARN L205 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 140 DAG size of output: 119 [2021-03-10 21:51:20,337 WARN L205 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 150 DAG size of output: 119 [2021-03-10 21:51:21,547 WARN L205 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2021-03-10 21:51:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:51:22,141 INFO L93 Difference]: Finished difference Result 264 states and 755 transitions. [2021-03-10 21:51:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:51:22,145 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:51:22,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:51:22,146 INFO L225 Difference]: With dead ends: 264 [2021-03-10 21:51:22,146 INFO L226 Difference]: Without dead ends: 260 [2021-03-10 21:51:22,146 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 9355.5ms TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:51:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-03-10 21:51:22,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 183. [2021-03-10 21:51:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.9505494505494507) internal successors, (537), 182 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:51:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 537 transitions. [2021-03-10 21:51:22,148 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 537 transitions. Word has length 17 [2021-03-10 21:51:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:51:22,149 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 537 transitions. [2021-03-10 21:51:22,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:51:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 537 transitions. [2021-03-10 21:51:22,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:51:22,149 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:51:22,149 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 21:51:22,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2161,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:51:22,355 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:51:22,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:51:22,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1633532686, now seen corresponding path program 56 times [2021-03-10 21:51:22,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:51:22,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552807548] [2021-03-10 21:51:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:51:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:51:22,515 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-03-10 21:51:22,712 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-10 21:51:22,852 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-03-10 21:51:23,002 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 21:51:23,288 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-03-10 21:51:23,539 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-03-10 21:51:23,624 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 21:51:23,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552807548] [2021-03-10 21:51:23,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821500721] [2021-03-10 21:51:23,624 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 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:51:23,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:51:23,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:51:23,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:51:23,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:51:24,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:24,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:24,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:51:24,185 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:51:24,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:24,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:24,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:51:24,204 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:24,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:24,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:24,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:24,222 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:24,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:24,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:24,238 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:24,603 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 21:51:24,604 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:24,632 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:51:24,633 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:171, output treesize:227 [2021-03-10 21:51:24,938 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 21:51:25,474 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2021-03-10 21:51:26,035 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_646, v_prenex_648, array_0], 1=[v_prenex_647, v_prenex_649, array_4]} [2021-03-10 21:51:26,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:51:26,050 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:51:26,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:26,064 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:26,375 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2021-03-10 21:51:26,376 INFO L628 ElimStorePlain]: treesize reduction 131, result has 37.3 percent of original size [2021-03-10 21:51:26,377 INFO L518 ElimStorePlain]: Eliminatee v_prenex_648 vanished before elimination [2021-03-10 21:51:26,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:51:26,389 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:26,491 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:51:26,492 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:26,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:26,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:26,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:51:26,509 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:26,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:26,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:51:26,523 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:26,565 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:26,660 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:26,661 INFO L518 ElimStorePlain]: Eliminatee v_prenex_649 vanished before elimination [2021-03-10 21:51:26,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:26,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:51:26,674 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:26,767 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:26,772 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 6 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:51:26,773 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 9 variables, input treesize:205, output treesize:26 [2021-03-10 21:51:26,914 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 21:51:26,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:51:26,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:51:26,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204126615] [2021-03-10 21:51:26,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:51:26,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:51:26,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:51:26,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:51:26,915 INFO L87 Difference]: Start difference. First operand 183 states and 537 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:51:27,406 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2021-03-10 21:51:27,923 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2021-03-10 21:51:29,200 WARN L205 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2021-03-10 21:51:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:51:29,592 INFO L93 Difference]: Finished difference Result 215 states and 621 transitions. [2021-03-10 21:51:29,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:51:29,595 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:51:29,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:51:29,595 INFO L225 Difference]: With dead ends: 215 [2021-03-10 21:51:29,595 INFO L226 Difference]: Without dead ends: 211 [2021-03-10 21:51:29,596 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 4094.6ms TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:51:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-03-10 21:51:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 187. [2021-03-10 21:51:29,598 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 21:51:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 551 transitions. [2021-03-10 21:51:29,598 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 551 transitions. Word has length 17 [2021-03-10 21:51:29,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:51:29,598 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 551 transitions. [2021-03-10 21:51:29,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:51:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 551 transitions. [2021-03-10 21:51:29,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:51:29,599 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:51:29,599 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 21:51:29,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2206 [2021-03-10 21:51:29,799 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:51:29,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:51:29,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1386912514, now seen corresponding path program 57 times [2021-03-10 21:51:29,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:51:29,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856388230] [2021-03-10 21:51:29,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:51:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:51:30,105 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-03-10 21:51:30,240 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2021-03-10 21:51:30,385 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2021-03-10 21:51:30,587 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-03-10 21:51:30,672 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 21:51:30,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856388230] [2021-03-10 21:51:30,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157082053] [2021-03-10 21:51:30,672 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 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:51:30,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:51:30,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:51:30,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:51:30,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:51:31,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:31,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:31,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:51:31,442 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:31,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:31,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:31,457 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 35 treesize of output 27 [2021-03-10 21:51:31,464 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:51:31,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:31,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:31,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:31,484 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:31,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:31,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:31,501 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:31,905 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-03-10 21:51:31,906 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:31,934 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:51:31,935 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:179, output treesize:235 [2021-03-10 21:51:32,284 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-03-10 21:51:32,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:32,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:32,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:32,814 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:32,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:32,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:51:32,833 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:51:34,135 WARN L205 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2021-03-10 21:51:34,136 INFO L628 ElimStorePlain]: treesize reduction 227, result has 63.2 percent of original size [2021-03-10 21:51:34,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:51:34,145 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:51:34,607 WARN L205 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-03-10 21:51:34,608 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:34,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:34,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:34,624 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 21 treesize of output 7 [2021-03-10 21:51:34,628 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:34,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:34,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:51:34,645 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:34,684 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:35,295 WARN L205 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-03-10 21:51:35,296 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:35,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:35,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:51:35,314 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:35,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:35,327 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 47 treesize of output 37 [2021-03-10 21:51:35,332 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:35,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:35,345 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 27 treesize of output 21 [2021-03-10 21:51:35,350 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:35,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:35,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:51:35,368 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:35,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:35,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:51:35,386 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:35,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:51:35,408 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:36,411 WARN L205 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-03-10 21:51:36,413 INFO L628 ElimStorePlain]: treesize reduction 22, result has 92.9 percent of original size [2021-03-10 21:51:36,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:36,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:36,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:51:36,431 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:36,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:36,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:36,445 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 46 treesize of output 15 [2021-03-10 21:51:36,449 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:36,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:36,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:36,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:51:36,469 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:36,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:36,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:36,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:51:36,489 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:36,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:36,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:51:36,505 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:36,953 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 21:51:36,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:36,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:51:36,971 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:37,416 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 21:51:37,418 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:37,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_655 vanished before elimination [2021-03-10 21:51:37,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:37,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:51:37,434 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:37,444 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 11 treesize of output 3 [2021-03-10 21:51:37,448 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:37,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:37,923 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-10 21:51:37,925 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:37,932 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 21:51:37,932 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 12 variables, input treesize:613, output treesize:135 [2021-03-10 21:51:38,344 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 21:51:38,496 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 21:51:38,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:51:38,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:51:38,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10046403] [2021-03-10 21:51:38,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:51:38,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:51:38,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:51:38,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:51:38,497 INFO L87 Difference]: Start difference. First operand 187 states and 551 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:51:39,158 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-03-10 21:51:39,513 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-03-10 21:51:40,260 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-03-10 21:51:41,194 WARN L205 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2021-03-10 21:51:42,097 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:51:43,008 WARN L205 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-03-10 21:51:43,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:51:43,377 INFO L93 Difference]: Finished difference Result 226 states and 654 transitions. [2021-03-10 21:51:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:51:43,380 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:51:43,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:51:43,381 INFO L225 Difference]: With dead ends: 226 [2021-03-10 21:51:43,381 INFO L226 Difference]: Without dead ends: 222 [2021-03-10 21:51:43,381 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5250.9ms TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:51:43,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-03-10 21:51:43,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 185. [2021-03-10 21:51:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9510869565217392) internal successors, (543), 184 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 21:51:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 543 transitions. [2021-03-10 21:51:43,384 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 543 transitions. Word has length 17 [2021-03-10 21:51:43,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:51:43,384 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 543 transitions. [2021-03-10 21:51:43,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:51:43,384 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 543 transitions. [2021-03-10 21:51:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:51:43,384 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:51:43,384 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 21:51:43,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2232 [2021-03-10 21:51:43,585 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:51:43,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:51:43,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1560160206, now seen corresponding path program 58 times [2021-03-10 21:51:43,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:51:43,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171964350] [2021-03-10 21:51:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:51:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:51:43,791 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2021-03-10 21:51:43,975 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-10 21:51:44,304 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-03-10 21:51:44,470 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2021-03-10 21:51:44,612 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 21:51:44,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171964350] [2021-03-10 21:51:44,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581388688] [2021-03-10 21:51:44,613 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 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:51:44,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:51:44,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:51:44,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:51:44,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:51:45,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:45,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:45,590 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 21:51:45,594 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:45,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:45,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:45,611 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:45,904 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:51:45,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:45,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:45,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:45,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:45,924 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:45,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:45,936 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 27 treesize of output 21 [2021-03-10 21:51:45,941 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:51:46,241 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:51:46,242 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:46,264 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:51:46,264 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:190, output treesize:180 [2021-03-10 21:51:46,519 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 21:51:46,955 INFO L446 ElimStorePlain]: Different costs {1=[array_0], 10=[array_2]} [2021-03-10 21:51:46,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:46,967 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 38 treesize of output 30 [2021-03-10 21:51:46,973 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:51:46,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:46,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:51:46,991 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:51:47,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:47,004 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 19 treesize of output 15 [2021-03-10 21:51:47,009 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:47,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:47,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:47,026 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:47,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:47,039 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 28 treesize of output 22 [2021-03-10 21:51:47,045 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:47,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:47,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:47,063 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:47,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:47,075 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 35 treesize of output 27 [2021-03-10 21:51:47,081 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2021-03-10 21:51:47,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:47,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:47,099 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:47,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:47,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:51:47,119 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 4 xjuncts. [2021-03-10 21:51:47,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:51:47,138 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:48,578 WARN L205 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2021-03-10 21:51:48,579 INFO L628 ElimStorePlain]: treesize reduction 284, result has 57.9 percent of original size [2021-03-10 21:51:48,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,589 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 24 treesize of output 9 [2021-03-10 21:51:48,591 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:48,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:51:48,603 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:48,640 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:48,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,650 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 20 treesize of output 9 [2021-03-10 21:51:48,652 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:48,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,661 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 20 treesize of output 9 [2021-03-10 21:51:48,664 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:48,686 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:48,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:51:48,699 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:48,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:51:48,711 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:48,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 15 [2021-03-10 21:51:48,723 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:48,777 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:48,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:51:48,799 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:48,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:51:48,820 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:48,868 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:48,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:51:48,881 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 11 treesize of output 3 [2021-03-10 21:51:48,886 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:49,494 WARN L205 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:51:49,496 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:49,501 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:51:49,501 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 6 variables, input treesize:509, output treesize:208 [2021-03-10 21:51:50,352 WARN L205 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2021-03-10 21:51:50,765 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2021-03-10 21:51:50,825 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 21:51:50,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:51:50,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:51:50,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281272409] [2021-03-10 21:51:50,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:51:50,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:51:50,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:51:50,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:51:50,826 INFO L87 Difference]: Start difference. First operand 185 states and 543 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:51:51,689 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-03-10 21:51:52,803 WARN L205 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2021-03-10 21:51:54,689 WARN L205 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2021-03-10 21:51:55,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:51:55,163 INFO L93 Difference]: Finished difference Result 216 states and 629 transitions. [2021-03-10 21:51:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:51:55,167 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:51:55,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:51:55,168 INFO L225 Difference]: With dead ends: 216 [2021-03-10 21:51:55,168 INFO L226 Difference]: Without dead ends: 212 [2021-03-10 21:51:55,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 5686.5ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:51:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-03-10 21:51:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 179. [2021-03-10 21:51:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.949438202247191) internal successors, (525), 178 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 21:51:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 525 transitions. [2021-03-10 21:51:55,170 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 525 transitions. Word has length 17 [2021-03-10 21:51:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:51:55,171 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 525 transitions. [2021-03-10 21:51:55,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:51:55,171 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 525 transitions. [2021-03-10 21:51:55,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:51:55,171 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:51:55,171 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 21:51:55,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2268 [2021-03-10 21:51:55,372 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:51:55,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:51:55,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1698524914, now seen corresponding path program 59 times [2021-03-10 21:51:55,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:51:55,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040576523] [2021-03-10 21:51:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:51:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:51:55,661 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2021-03-10 21:51:55,885 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-10 21:51:56,357 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 21:51:56,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040576523] [2021-03-10 21:51:56,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798105476] [2021-03-10 21:51:56,357 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 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:51:56,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:51:56,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:51:56,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:51:56,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:51:56,824 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 21:51:57,085 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 21:51:57,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:51:57,186 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:57,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:51:57,197 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:57,332 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 21:51:57,333 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:57,342 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 25 treesize of output 19 [2021-03-10 21:51:57,347 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:57,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:51:57,361 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:51:57,500 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 21:51:57,501 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:57,504 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:51:57,505 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:110, output treesize:98 [2021-03-10 21:51:57,705 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 21:51:57,827 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 27 treesize of output 21 [2021-03-10 21:51:57,832 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:51:58,127 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-03-10 21:51:58,128 INFO L628 ElimStorePlain]: treesize reduction 52, result has 64.6 percent of original size [2021-03-10 21:51:58,129 INFO L518 ElimStorePlain]: Eliminatee v_prenex_669 vanished before elimination [2021-03-10 21:51:58,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:51:58,137 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:51:58,217 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:58,217 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:51:58,222 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 27 treesize of output 21 [2021-03-10 21:51:58,224 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:58,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:51:58,231 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:51:58,294 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:51:58,295 INFO L518 ElimStorePlain]: Eliminatee v_prenex_667 vanished before elimination [2021-03-10 21:51:58,296 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:51:58,296 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:160, output treesize:52 [2021-03-10 21:51:58,454 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-03-10 21:51:58,491 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 21:51:58,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:51:58,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-03-10 21:51:58,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281410772] [2021-03-10 21:51:58,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 21:51:58,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:51:58,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 21:51:58,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:51:58,492 INFO L87 Difference]: Start difference. First operand 179 states and 525 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 21:51:59,420 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-03-10 21:52:00,063 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-03-10 21:52:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:52:00,391 INFO L93 Difference]: Finished difference Result 210 states and 610 transitions. [2021-03-10 21:52:00,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:52:00,395 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 17 [2021-03-10 21:52:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:52:00,396 INFO L225 Difference]: With dead ends: 210 [2021-03-10 21:52:00,396 INFO L226 Difference]: Without dead ends: 206 [2021-03-10 21:52:00,396 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2819.3ms TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:52:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-03-10 21:52:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 183. [2021-03-10 21:52:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.9505494505494507) internal successors, (537), 182 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:52:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 537 transitions. [2021-03-10 21:52:00,398 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 537 transitions. Word has length 17 [2021-03-10 21:52:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:52:00,398 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 537 transitions. [2021-03-10 21:52:00,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 21:52:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 537 transitions. [2021-03-10 21:52:00,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:52:00,399 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:52:00,399 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 21:52:00,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2317,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:52:00,600 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:52:00,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:52:00,600 INFO L82 PathProgramCache]: Analyzing trace with hash -217287044, now seen corresponding path program 60 times [2021-03-10 21:52:00,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:52:00,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170492131] [2021-03-10 21:52:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:52:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:52:00,890 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2021-03-10 21:52:01,126 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-03-10 21:52:01,322 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-03-10 21:52:01,730 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-10 21:52:01,811 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 21:52:01,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170492131] [2021-03-10 21:52:01,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385808168] [2021-03-10 21:52:01,812 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 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:52:01,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:52:01,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:52:01,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:52:01,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:52:02,223 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 21:52:02,494 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 15 treesize of output 11 [2021-03-10 21:52:02,499 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:02,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:52:02,513 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:02,523 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 17 treesize of output 13 [2021-03-10 21:52:02,528 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:02,537 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 27 treesize of output 21 [2021-03-10 21:52:02,543 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:02,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:52:02,557 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:02,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:52:02,571 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:02,982 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-03-10 21:52:02,983 INFO L628 ElimStorePlain]: treesize reduction 22, result has 85.4 percent of original size [2021-03-10 21:52:02,986 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:52:02,987 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:175, output treesize:129 [2021-03-10 21:52:03,273 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 21:52:03,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:03,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:03,758 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 25 treesize of output 19 [2021-03-10 21:52:03,763 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:03,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:03,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:03,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:52:03,786 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:03,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:03,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:03,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:52:03,812 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:03,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:03,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:03,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:52:03,840 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:03,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:03,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:03,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:52:03,862 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:03,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:03,879 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 28 treesize of output 22 [2021-03-10 21:52:03,884 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:04,431 WARN L205 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-03-10 21:52:04,432 INFO L628 ElimStorePlain]: treesize reduction 145, result has 54.7 percent of original size [2021-03-10 21:52:04,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:04,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:04,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:52:04,442 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:04,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:04,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:04,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:52:04,453 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:04,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:04,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:52:04,462 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:04,987 WARN L205 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-03-10 21:52:04,988 INFO L628 ElimStorePlain]: treesize reduction 18, result has 91.3 percent of original size [2021-03-10 21:52:04,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:04,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:04,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:52:05,000 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:05,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:05,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:52:05,013 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:05,332 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:52:05,334 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:05,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:05,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:05,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:52:05,351 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:05,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:05,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:05,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:52:05,371 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:05,419 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:05,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:05,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:05,433 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 11 treesize of output 3 [2021-03-10 21:52:05,438 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:05,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:05,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:05,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:52:05,456 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:05,503 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:05,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:05,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:52:05,519 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:05,826 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 21:52:05,827 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:05,833 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-03-10 21:52:05,833 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 6 variables, input treesize:362, output treesize:64 [2021-03-10 21:52:06,026 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2021-03-10 21:52:06,082 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 21:52:06,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:52:06,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:52:06,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76059224] [2021-03-10 21:52:06,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:52:06,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:52:06,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:52:06,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:52:06,083 INFO L87 Difference]: Start difference. First operand 183 states and 537 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:52:07,052 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-03-10 21:52:07,639 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2021-03-10 21:52:08,561 WARN L205 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-03-10 21:52:08,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:52:08,754 INFO L93 Difference]: Finished difference Result 203 states and 584 transitions. [2021-03-10 21:52:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:52:08,758 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:52:08,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:52:08,758 INFO L225 Difference]: With dead ends: 203 [2021-03-10 21:52:08,758 INFO L226 Difference]: Without dead ends: 199 [2021-03-10 21:52:08,758 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 3733.7ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-03-10 21:52:08,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-03-10 21:52:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 181. [2021-03-10 21:52:08,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.9555555555555557) internal successors, (532), 180 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:52:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 532 transitions. [2021-03-10 21:52:08,761 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 532 transitions. Word has length 17 [2021-03-10 21:52:08,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:52:08,761 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 532 transitions. [2021-03-10 21:52:08,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:52:08,761 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 532 transitions. [2021-03-10 21:52:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:52:08,762 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:52:08,762 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 21:52:08,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2339,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:52:08,962 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:52:08,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:52:08,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1551414880, now seen corresponding path program 61 times [2021-03-10 21:52:08,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:52:08,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750638681] [2021-03-10 21:52:08,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:52:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:52:09,318 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-03-10 21:52:09,822 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-03-10 21:52:10,264 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-10 21:52:10,351 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 21:52:10,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750638681] [2021-03-10 21:52:10,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562234764] [2021-03-10 21:52:10,351 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 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:52:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:52:10,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:52:10,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:52:10,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:10,778 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 35 treesize of output 27 [2021-03-10 21:52:10,784 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:52:10,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:10,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:52:10,800 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:10,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:10,811 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 25 treesize of output 19 [2021-03-10 21:52:10,816 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:10,826 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 25 treesize of output 19 [2021-03-10 21:52:10,831 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:11,184 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:52:11,185 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:11,189 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:52:11,189 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:147, output treesize:207 [2021-03-10 21:52:11,622 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:52:11,759 INFO L446 ElimStorePlain]: Different costs {0=[array_2, v_prenex_673, v_prenex_675, v_prenex_677], 1=[array_4, v_prenex_674, v_prenex_676, v_prenex_678]} [2021-03-10 21:52:11,772 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 17 treesize of output 13 [2021-03-10 21:52:11,777 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:11,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:52:11,794 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:12,748 WARN L205 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-03-10 21:52:12,749 INFO L628 ElimStorePlain]: treesize reduction 197, result has 61.1 percent of original size [2021-03-10 21:52:12,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:52:12,763 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:13,235 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-03-10 21:52:13,236 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:13,246 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 27 treesize of output 21 [2021-03-10 21:52:13,251 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:13,738 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:52:13,740 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:13,750 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 19 treesize of output 15 [2021-03-10 21:52:13,756 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:13,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:52:13,771 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:13,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:52:13,787 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:13,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:52:13,802 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:13,811 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:52:13,816 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:13,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:52:13,831 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:14,605 WARN L205 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2021-03-10 21:52:14,607 INFO L628 ElimStorePlain]: treesize reduction 21, result has 91.9 percent of original size [2021-03-10 21:52:14,607 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:52:14,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:14,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:52:14,622 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:14,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:52:14,636 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:14,672 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:15,043 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 21:52:15,044 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:15,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:15,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:52:15,055 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:15,061 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 21 treesize of output 7 [2021-03-10 21:52:15,063 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:15,087 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:15,325 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:52:15,327 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:15,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:15,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:52:15,343 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:15,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:15,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:52:15,361 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:15,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:15,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:52:15,377 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:15,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:15,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:52:15,393 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:15,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:52:15,408 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:15,765 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:52:15,766 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:15,770 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:52:15,770 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 8 variables, input treesize:521, output treesize:139 [2021-03-10 21:52:16,216 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:52:16,494 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:52:16,521 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 21:52:16,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:52:16,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-03-10 21:52:16,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303976092] [2021-03-10 21:52:16,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:52:16,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:52:16,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:52:16,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:52:16,522 INFO L87 Difference]: Start difference. First operand 181 states and 532 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:52:17,166 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2021-03-10 21:52:17,598 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2021-03-10 21:52:19,692 WARN L205 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2021-03-10 21:52:20,745 WARN L205 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-03-10 21:52:21,953 WARN L205 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-03-10 21:52:22,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:52:22,171 INFO L93 Difference]: Finished difference Result 230 states and 652 transitions. [2021-03-10 21:52:22,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:52:22,174 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 17 [2021-03-10 21:52:22,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:52:22,175 INFO L225 Difference]: With dead ends: 230 [2021-03-10 21:52:22,175 INFO L226 Difference]: Without dead ends: 222 [2021-03-10 21:52:22,175 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 6866.7ms TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:52:22,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-03-10 21:52:22,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 180. [2021-03-10 21:52:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9497206703910615) internal successors, (528), 179 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 21:52:22,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 528 transitions. [2021-03-10 21:52:22,178 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 528 transitions. Word has length 17 [2021-03-10 21:52:22,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:52:22,178 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 528 transitions. [2021-03-10 21:52:22,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:52:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 528 transitions. [2021-03-10 21:52:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:52:22,178 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:52:22,178 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 21:52:22,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2364 [2021-03-10 21:52:22,395 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:52:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:52:22,396 INFO L82 PathProgramCache]: Analyzing trace with hash 331629366, now seen corresponding path program 62 times [2021-03-10 21:52:22,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:52:22,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868827478] [2021-03-10 21:52:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:52:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:52:22,565 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2021-03-10 21:52:22,729 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-03-10 21:52:23,006 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-03-10 21:52:23,209 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-03-10 21:52:23,603 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 21:52:23,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868827478] [2021-03-10 21:52:23,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664936962] [2021-03-10 21:52:23,604 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 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:52:23,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:52:23,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:52:23,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:52:23,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:52:24,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:24,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:24,228 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 15 treesize of output 11 [2021-03-10 21:52:24,233 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:24,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:24,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:24,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:52:24,254 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:52:24,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:24,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:24,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:52:24,274 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:24,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:24,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:52:24,292 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:24,741 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:52:24,742 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:24,772 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:52:24,773 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:205, output treesize:261 [2021-03-10 21:52:25,034 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-03-10 21:52:26,050 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 86 [2021-03-10 21:52:26,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:26,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:26,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:52:26,928 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:26,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:26,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:52:26,947 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:27,532 WARN L205 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2021-03-10 21:52:27,533 INFO L628 ElimStorePlain]: treesize reduction 163, result has 46.4 percent of original size [2021-03-10 21:52:27,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:27,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:52:27,551 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:27,745 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-03-10 21:52:27,746 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:27,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:27,759 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 19 treesize of output 15 [2021-03-10 21:52:27,765 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:27,949 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 21:52:27,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:27,951 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:52:27,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:27,962 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 11 treesize of output 3 [2021-03-10 21:52:27,967 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:28,143 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 21:52:28,144 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:28,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:28,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:52:28,162 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:28,373 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 21:52:28,374 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:28,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:28,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:28,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:52:28,394 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:28,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:28,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:52:28,411 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:28,460 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:28,663 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-10 21:52:28,664 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:28,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:28,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:52:28,680 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:28,821 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-03-10 21:52:28,821 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:28,826 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-03-10 21:52:28,826 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 16 variables, input treesize:318, output treesize:38 [2021-03-10 21:52:28,912 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 21:52:28,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:52:28,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-03-10 21:52:28,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679885412] [2021-03-10 21:52:28,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:52:28,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:52:28,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:52:28,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:52:28,913 INFO L87 Difference]: Start difference. First operand 180 states and 528 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 21:52:30,057 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-03-10 21:52:30,893 WARN L205 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2021-03-10 21:52:32,951 WARN L205 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 167 DAG size of output: 142 [2021-03-10 21:52:33,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:52:33,557 INFO L93 Difference]: Finished difference Result 205 states and 591 transitions. [2021-03-10 21:52:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:52:33,562 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 17 [2021-03-10 21:52:33,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:52:33,562 INFO L225 Difference]: With dead ends: 205 [2021-03-10 21:52:33,562 INFO L226 Difference]: Without dead ends: 201 [2021-03-10 21:52:33,563 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 5145.2ms TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:52:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-03-10 21:52:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 184. [2021-03-10 21:52:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9617486338797816) internal successors, (542), 183 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 21:52:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 542 transitions. [2021-03-10 21:52:33,565 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 542 transitions. Word has length 17 [2021-03-10 21:52:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:52:33,565 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 542 transitions. [2021-03-10 21:52:33,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 21:52:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 542 transitions. [2021-03-10 21:52:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:52:33,566 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:52:33,566 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 21:52:33,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2381,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:52:33,783 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:52:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:52:33,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1194280058, now seen corresponding path program 63 times [2021-03-10 21:52:33,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:52:33,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940445064] [2021-03-10 21:52:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:52:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:52:34,224 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-03-10 21:52:34,443 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-03-10 21:52:34,647 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 21:52:34,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940445064] [2021-03-10 21:52:34,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289381185] [2021-03-10 21:52:34,647 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 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:52:34,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:52:34,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:52:34,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:52:34,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:52:35,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:35,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:35,204 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 15 treesize of output 11 [2021-03-10 21:52:35,207 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:35,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:35,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:35,215 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 25 treesize of output 19 [2021-03-10 21:52:35,218 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:35,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:35,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:35,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:52:35,229 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:35,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:35,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:52:35,240 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:52:35,569 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-03-10 21:52:35,571 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:35,601 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:52:35,601 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:199, output treesize:255 [2021-03-10 21:52:35,897 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-03-10 21:52:36,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:36,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:36,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:52:36,634 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:36,644 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:52:36,648 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:38,188 WARN L205 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2021-03-10 21:52:38,189 INFO L628 ElimStorePlain]: treesize reduction 214, result has 66.1 percent of original size [2021-03-10 21:52:38,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:52:38,206 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:38,942 WARN L205 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-03-10 21:52:38,943 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:38,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:38,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:38,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:52:38,966 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:38,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:38,980 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 11 treesize of output 3 [2021-03-10 21:52:38,986 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:39,033 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:39,599 WARN L205 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-03-10 21:52:39,600 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:39,609 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 27 treesize of output 21 [2021-03-10 21:52:39,615 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:40,387 WARN L205 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-03-10 21:52:40,388 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:40,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:40,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:40,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:52:40,410 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:40,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:40,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:52:40,429 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:40,484 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:41,265 WARN L205 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 21:52:41,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:41,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:41,280 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 47 treesize of output 37 [2021-03-10 21:52:41,286 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:41,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:41,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:52:41,306 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:41,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:41,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:52:41,327 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:41,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:41,342 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 23 [2021-03-10 21:52:41,350 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:41,369 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:52:41,375 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:41,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:52:41,392 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:42,664 WARN L205 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2021-03-10 21:52:42,666 INFO L628 ElimStorePlain]: treesize reduction 22, result has 93.1 percent of original size [2021-03-10 21:52:42,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:42,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:42,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 15 [2021-03-10 21:52:42,687 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:42,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:42,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:42,703 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 20 treesize of output 9 [2021-03-10 21:52:42,708 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:42,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:42,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:42,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:52:42,729 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:42,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:42,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:42,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:52:42,751 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:42,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:42,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:52:42,769 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:43,317 WARN L205 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-03-10 21:52:43,318 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:43,319 INFO L518 ElimStorePlain]: Eliminatee v_prenex_700 vanished before elimination [2021-03-10 21:52:43,323 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 21:52:43,323 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 12 variables, input treesize:683, output treesize:159 [2021-03-10 21:52:44,262 WARN L205 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-03-10 21:52:44,514 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-03-10 21:52:44,574 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 21:52:44,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:52:44,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:52:44,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672393942] [2021-03-10 21:52:44,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:52:44,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:52:44,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:52:44,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:52:44,575 INFO L87 Difference]: Start difference. First operand 184 states and 542 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:52:45,745 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-03-10 21:52:46,646 WARN L205 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2021-03-10 21:52:47,955 WARN L205 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-03-10 21:52:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:52:48,196 INFO L93 Difference]: Finished difference Result 216 states and 624 transitions. [2021-03-10 21:52:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:52:48,200 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:52:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:52:48,200 INFO L225 Difference]: With dead ends: 216 [2021-03-10 21:52:48,200 INFO L226 Difference]: Without dead ends: 212 [2021-03-10 21:52:48,201 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4764.9ms TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-03-10 21:52:48,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-03-10 21:52:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 182. [2021-03-10 21:52:48,203 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 21:52:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2021-03-10 21:52:48,203 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2021-03-10 21:52:48,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:52:48,203 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2021-03-10 21:52:48,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:52:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2021-03-10 21:52:48,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:52:48,204 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:52:48,204 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 21:52:48,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2426,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:52:48,404 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:52:48,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:52:48,404 INFO L82 PathProgramCache]: Analyzing trace with hash -483176788, now seen corresponding path program 64 times [2021-03-10 21:52:48,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:52:48,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649507596] [2021-03-10 21:52:48,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:52:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:52:48,645 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2021-03-10 21:52:48,837 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-10 21:52:48,999 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-03-10 21:52:49,220 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-03-10 21:52:49,390 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 21:52:49,484 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 21:52:49,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649507596] [2021-03-10 21:52:49,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317733125] [2021-03-10 21:52:49,485 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 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:52:49,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:52:49,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:52:49,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:52:49,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:52:50,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:50,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:50,423 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 25 treesize of output 19 [2021-03-10 21:52:50,428 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:50,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:50,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:52:50,446 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:50,839 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 21:52:50,840 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:50,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:50,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:50,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:52:50,861 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:50,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:50,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:52:50,880 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:51,270 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-10 21:52:51,271 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:51,297 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:52:51,297 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:227, output treesize:217 [2021-03-10 21:52:51,516 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-10 21:52:52,283 INFO L446 ElimStorePlain]: Different costs {1=[array_0], 10=[array_2]} [2021-03-10 21:52:52,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,299 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 19 treesize of output 15 [2021-03-10 21:52:52,304 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:52,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 30 [2021-03-10 21:52:52,327 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:52,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:52:52,349 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:52,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:52:52,372 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:52:52,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:52:52,394 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:52,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:52:52,420 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:52,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:52:52,444 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2021-03-10 21:52:52,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:52:52,468 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:52,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:52:52,501 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:52,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:52,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:52:52,522 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2021-03-10 21:52:54,098 WARN L205 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 121 DAG size of output: 93 [2021-03-10 21:52:54,099 INFO L628 ElimStorePlain]: treesize reduction 305, result has 58.8 percent of original size [2021-03-10 21:52:54,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:52:54,124 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:54,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:52:54,147 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:54,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:52:54,169 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:54,218 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:54,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:52:54,240 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:54,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 15 [2021-03-10 21:52:54,264 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:54,357 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:54,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:52:54,382 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:54,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:52:54,406 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:54,461 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:54,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:52:54,485 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:54,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:52:54,508 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:54,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:52:54,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:52:54,528 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:52:54,581 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:55,255 WARN L205 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-10 21:52:55,256 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:52:55,262 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:52:55,262 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 6 variables, input treesize:574, output treesize:320 [2021-03-10 21:52:56,358 WARN L205 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2021-03-10 21:52:56,844 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2021-03-10 21:52:56,907 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 21:52:56,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:52:56,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-03-10 21:52:56,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545956000] [2021-03-10 21:52:56,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:52:56,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:52:56,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:52:56,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:52:56,908 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:52:57,858 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-03-10 21:52:58,683 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2021-03-10 21:52:59,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:52:59,369 INFO L93 Difference]: Finished difference Result 206 states and 599 transitions. [2021-03-10 21:52:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:52:59,373 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17 [2021-03-10 21:52:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:52:59,373 INFO L225 Difference]: With dead ends: 206 [2021-03-10 21:52:59,373 INFO L226 Difference]: Without dead ends: 202 [2021-03-10 21:52:59,373 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 4007.7ms TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:52:59,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-03-10 21:52:59,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 180. [2021-03-10 21:52:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9497206703910615) internal successors, (528), 179 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 21:52:59,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 528 transitions. [2021-03-10 21:52:59,376 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 528 transitions. Word has length 17 [2021-03-10 21:52:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:52:59,376 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 528 transitions. [2021-03-10 21:52:59,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:52:59,376 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 528 transitions. [2021-03-10 21:52:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:52:59,376 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:52:59,376 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 21:52:59,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2466 [2021-03-10 21:52:59,577 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:52:59,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:52:59,577 INFO L82 PathProgramCache]: Analyzing trace with hash 538722348, now seen corresponding path program 65 times [2021-03-10 21:52:59,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:52:59,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951140399] [2021-03-10 21:52:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:52:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:52:59,814 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2021-03-10 21:53:00,010 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-10 21:53:00,291 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-03-10 21:53:00,440 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-10 21:53:00,634 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 21:53:00,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951140399] [2021-03-10 21:53:00,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808083622] [2021-03-10 21:53:00,634 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 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:53:00,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:53:00,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:53:00,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:53:00,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:53:01,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:01,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:01,166 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:01,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:01,177 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 21:53:01,181 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:01,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:01,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:01,198 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:01,208 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 35 treesize of output 27 [2021-03-10 21:53:01,214 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:53:01,520 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:53:01,521 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:01,523 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:53:01,524 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:179, output treesize:239 [2021-03-10 21:53:01,959 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:53:02,506 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2021-03-10 21:53:02,628 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 19 treesize of output 15 [2021-03-10 21:53:02,633 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:02,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:53:02,649 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:02,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:53:02,663 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:02,673 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 28 treesize of output 22 [2021-03-10 21:53:02,678 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:02,919 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-03-10 21:53:02,921 INFO L628 ElimStorePlain]: treesize reduction 20, result has 78.7 percent of original size [2021-03-10 21:53:02,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:53:02,936 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:03,064 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-10 21:53:03,065 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:03,065 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:53:03,074 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 27 treesize of output 21 [2021-03-10 21:53:03,079 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:03,223 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-03-10 21:53:03,224 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:03,225 INFO L518 ElimStorePlain]: Eliminatee v_prenex_710 vanished before elimination [2021-03-10 21:53:03,225 INFO L518 ElimStorePlain]: Eliminatee v_prenex_711 vanished before elimination [2021-03-10 21:53:03,228 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:53:03,228 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:164, output treesize:52 [2021-03-10 21:53:03,446 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-03-10 21:53:03,499 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 21:53:03,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:53:03,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-03-10 21:53:03,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986774319] [2021-03-10 21:53:03,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:53:03,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:53:03,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:53:03,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:53:03,500 INFO L87 Difference]: Start difference. First operand 180 states and 528 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:53:04,543 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2021-03-10 21:53:05,531 WARN L205 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2021-03-10 21:53:06,170 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2021-03-10 21:53:06,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:53:06,360 INFO L93 Difference]: Finished difference Result 208 states and 605 transitions. [2021-03-10 21:53:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:53:06,364 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 17 [2021-03-10 21:53:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:53:06,365 INFO L225 Difference]: With dead ends: 208 [2021-03-10 21:53:06,365 INFO L226 Difference]: Without dead ends: 204 [2021-03-10 21:53:06,365 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4229.7ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:53:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-03-10 21:53:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 182. [2021-03-10 21:53:06,367 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 21:53:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2021-03-10 21:53:06,367 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2021-03-10 21:53:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:53:06,367 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2021-03-10 21:53:06,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:53:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2021-03-10 21:53:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:53:06,368 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:53:06,368 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 21:53:06,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2537,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:53:06,568 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:53:06,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:53:06,569 INFO L82 PathProgramCache]: Analyzing trace with hash 881305860, now seen corresponding path program 66 times [2021-03-10 21:53:06,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:53:06,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45576789] [2021-03-10 21:53:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:53:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:53:06,810 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2021-03-10 21:53:06,951 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 21:53:07,189 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-03-10 21:53:07,384 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 21:53:07,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45576789] [2021-03-10 21:53:07,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530949382] [2021-03-10 21:53:07,384 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 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:53:07,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-03-10 21:53:07,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:53:07,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:53:07,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:53:07,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:07,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:07,974 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 25 treesize of output 19 [2021-03-10 21:53:07,980 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:07,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:07,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:07,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:53:08,001 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:08,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:08,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:08,016 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 21:53:08,022 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:08,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:08,033 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 17 treesize of output 13 [2021-03-10 21:53:08,039 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:08,320 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 21:53:08,322 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:08,347 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:53:08,347 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:179, output treesize:169 [2021-03-10 21:53:08,615 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-03-10 21:53:08,978 INFO L446 ElimStorePlain]: Different costs {1=[array_0], 36=[array_2]} [2021-03-10 21:53:08,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:08,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:08,990 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 28 treesize of output 22 [2021-03-10 21:53:08,992 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:09,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,003 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 35 treesize of output 27 [2021-03-10 21:53:09,007 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:53:09,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:53:09,021 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:09,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,033 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 29 treesize of output 23 [2021-03-10 21:53:09,036 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:09,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,049 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 38 treesize of output 30 [2021-03-10 21:53:09,056 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:09,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:53:09,080 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:09,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,101 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 15 treesize of output 11 [2021-03-10 21:53:09,107 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:09,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,127 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 25 treesize of output 19 [2021-03-10 21:53:09,132 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:09,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:53:09,158 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:09,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:09,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:09,180 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:10,888 WARN L205 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 116 DAG size of output: 90 [2021-03-10 21:53:10,889 INFO L628 ElimStorePlain]: treesize reduction 171, result has 72.1 percent of original size [2021-03-10 21:53:10,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:10,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:10,908 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 12 treesize of output 5 [2021-03-10 21:53:10,913 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:10,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:10,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:10,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:53:10,936 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:10,997 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:11,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:53:11,021 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:11,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,040 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 11 treesize of output 3 [2021-03-10 21:53:11,045 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:11,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:53:11,070 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:11,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:53:11,095 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:11,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:53:11,125 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:11,182 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:11,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:53:11,208 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:11,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:53:11,232 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:11,291 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:11,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,310 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 46 treesize of output 15 [2021-03-10 21:53:11,316 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:11,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:11,331 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 24 treesize of output 9 [2021-03-10 21:53:11,337 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:11,419 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:12,219 WARN L205 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-03-10 21:53:12,220 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:12,230 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:53:12,230 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 10 variables, input treesize:518, output treesize:261 [2021-03-10 21:53:13,046 WARN L205 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2021-03-10 21:53:13,325 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-03-10 21:53:13,384 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 21:53:13,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:53:13,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-03-10 21:53:13,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965700381] [2021-03-10 21:53:13,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:53:13,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:53:13,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:53:13,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:53:13,385 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:53:14,164 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-03-10 21:53:14,532 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-03-10 21:53:15,191 WARN L205 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-03-10 21:53:15,976 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-03-10 21:53:16,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:53:16,310 INFO L93 Difference]: Finished difference Result 206 states and 599 transitions. [2021-03-10 21:53:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:53:16,315 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 17 [2021-03-10 21:53:16,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:53:16,315 INFO L225 Difference]: With dead ends: 206 [2021-03-10 21:53:16,315 INFO L226 Difference]: Without dead ends: 202 [2021-03-10 21:53:16,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3915.5ms TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:53:16,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-03-10 21:53:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 177. [2021-03-10 21:53:16,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.9488636363636362) internal successors, (519), 176 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 21:53:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 519 transitions. [2021-03-10 21:53:16,318 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 519 transitions. Word has length 17 [2021-03-10 21:53:16,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:53:16,318 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 519 transitions. [2021-03-10 21:53:16,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:53:16,318 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 519 transitions. [2021-03-10 21:53:16,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:53:16,318 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:53:16,319 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 21:53:16,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2556 [2021-03-10 21:53:16,527 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:53:16,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:53:16,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1017508532, now seen corresponding path program 67 times [2021-03-10 21:53:16,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:53:16,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299192927] [2021-03-10 21:53:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:53:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:53:16,751 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-03-10 21:53:16,962 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-03-10 21:53:17,392 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-03-10 21:53:17,599 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-03-10 21:53:17,816 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-03-10 21:53:18,037 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 21:53:18,124 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 21:53:18,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299192927] [2021-03-10 21:53:18,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976614009] [2021-03-10 21:53:18,125 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 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:53:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:53:18,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:53:18,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:53:18,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:53:18,328 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:18,337 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 27 treesize of output 21 [2021-03-10 21:53:18,343 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:18,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:18,358 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:18,367 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 17 treesize of output 13 [2021-03-10 21:53:18,372 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:18,493 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-03-10 21:53:18,494 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:18,497 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:53:18,497 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:91, output treesize:77 [2021-03-10 21:53:18,697 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-03-10 21:53:18,962 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-10 21:53:19,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:19,080 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 27 treesize of output 21 [2021-03-10 21:53:19,086 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:19,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:19,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:53:19,105 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:19,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:19,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:19,123 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:19,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:19,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:53:19,144 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:53:19,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:19,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 29 [2021-03-10 21:53:19,164 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:19,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:19,182 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 17 treesize of output 13 [2021-03-10 21:53:19,187 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:19,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:19,201 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 18 treesize of output 14 [2021-03-10 21:53:19,206 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:19,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:19,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:53:19,227 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:19,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:19,243 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 15 treesize of output 11 [2021-03-10 21:53:19,248 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:19,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:19,265 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:20,312 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2021-03-10 21:53:20,314 INFO L628 ElimStorePlain]: treesize reduction 200, result has 54.8 percent of original size [2021-03-10 21:53:20,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:20,327 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 10 treesize of output 5 [2021-03-10 21:53:20,332 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:20,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:20,345 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 20 treesize of output 9 [2021-03-10 21:53:20,351 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:20,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:20,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:53:20,369 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:20,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:20,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:53:20,388 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:20,443 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:20,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:20,456 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 12 treesize of output 5 [2021-03-10 21:53:20,462 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:20,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:20,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:53:20,480 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:20,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:20,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:53:20,498 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:20,568 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:20,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:20,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:53:20,587 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:20,597 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 11 treesize of output 3 [2021-03-10 21:53:20,602 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:20,657 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:21,094 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:53:21,096 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:21,099 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:53:21,100 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 2 variables, input treesize:343, output treesize:143 [2021-03-10 21:53:21,603 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:53:21,883 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:53:21,913 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 21:53:21,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:53:21,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-03-10 21:53:21,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643719037] [2021-03-10 21:53:21,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:53:21,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:53:21,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:53:21,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:53:21,914 INFO L87 Difference]: Start difference. First operand 177 states and 519 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:53:22,316 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2021-03-10 21:53:22,652 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-03-10 21:53:23,409 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-03-10 21:53:24,389 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-03-10 21:53:25,226 WARN L205 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-03-10 21:53:26,116 WARN L205 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2021-03-10 21:53:27,839 WARN L205 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2021-03-10 21:53:29,780 WARN L205 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2021-03-10 21:53:31,663 WARN L205 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 108 DAG size of output: 90 [2021-03-10 21:53:33,815 WARN L205 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2021-03-10 21:53:35,617 WARN L205 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2021-03-10 21:53:37,524 WARN L205 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2021-03-10 21:53:37,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:53:37,901 INFO L93 Difference]: Finished difference Result 308 states and 876 transitions. [2021-03-10 21:53:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 21:53:37,905 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 17 [2021-03-10 21:53:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:53:37,906 INFO L225 Difference]: With dead ends: 308 [2021-03-10 21:53:37,906 INFO L226 Difference]: Without dead ends: 300 [2021-03-10 21:53:37,906 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 16217.8ms TimeCoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2021-03-10 21:53:37,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-03-10 21:53:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 185. [2021-03-10 21:53:37,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9510869565217392) internal successors, (543), 184 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 21:53:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 543 transitions. [2021-03-10 21:53:37,909 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 543 transitions. Word has length 17 [2021-03-10 21:53:37,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:53:37,909 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 543 transitions. [2021-03-10 21:53:37,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:53:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 543 transitions. [2021-03-10 21:53:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:53:37,909 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:53:37,910 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 21:53:38,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2596 [2021-03-10 21:53:38,110 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:53:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:53:38,110 INFO L82 PathProgramCache]: Analyzing trace with hash -56410218, now seen corresponding path program 68 times [2021-03-10 21:53:38,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:53:38,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48683149] [2021-03-10 21:53:38,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:53:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:53:38,328 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2021-03-10 21:53:38,569 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-10 21:53:38,882 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 21:53:39,228 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-03-10 21:53:39,553 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-03-10 21:53:39,651 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 21:53:39,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48683149] [2021-03-10 21:53:39,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5964208] [2021-03-10 21:53:39,652 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 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:53:39,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:53:39,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:53:39,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:53:39,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:53:40,356 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 21:53:40,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:40,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:40,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:40,542 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:40,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:40,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:40,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:40,564 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:40,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:40,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:40,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:53:40,586 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:40,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:40,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:53:40,605 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:53:41,074 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-10 21:53:41,075 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:41,109 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:53:41,109 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:171, output treesize:227 [2021-03-10 21:53:41,479 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-03-10 21:53:42,122 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2021-03-10 21:53:42,814 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_725, array_0, v_prenex_727], 1=[v_prenex_726, v_prenex_728, array_4]} [2021-03-10 21:53:42,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:53:42,831 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:42,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:42,849 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:43,166 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2021-03-10 21:53:43,168 INFO L628 ElimStorePlain]: treesize reduction 149, result has 28.7 percent of original size [2021-03-10 21:53:43,168 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 21:53:43,178 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 27 treesize of output 21 [2021-03-10 21:53:43,184 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:43,311 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:53:43,313 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:43,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:43,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:53:43,330 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:43,454 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-03-10 21:53:43,455 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:43,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:43,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:43,471 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 21 treesize of output 7 [2021-03-10 21:53:43,476 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:43,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:43,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:53:43,493 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:43,548 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:43,663 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-10 21:53:43,665 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:43,665 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:53:43,671 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 6 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:53:43,672 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 9 variables, input treesize:205, output treesize:26 [2021-03-10 21:53:43,847 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 21:53:43,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:53:43,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:53:43,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092916378] [2021-03-10 21:53:43,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:53:43,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:53:43,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:53:43,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:53:43,848 INFO L87 Difference]: Start difference. First operand 185 states and 543 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:53:44,427 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2021-03-10 21:53:45,278 WARN L205 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2021-03-10 21:53:45,806 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-10 21:53:47,306 WARN L205 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 113 DAG size of output: 104 [2021-03-10 21:53:47,730 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 21:53:47,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:53:47,878 INFO L93 Difference]: Finished difference Result 260 states and 746 transitions. [2021-03-10 21:53:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:53:47,880 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:53:47,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:53:47,881 INFO L225 Difference]: With dead ends: 260 [2021-03-10 21:53:47,881 INFO L226 Difference]: Without dead ends: 256 [2021-03-10 21:53:47,881 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 5959.3ms TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:53:47,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-03-10 21:53:47,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 189. [2021-03-10 21:53:47,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9627659574468086) internal successors, (557), 188 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:53:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 557 transitions. [2021-03-10 21:53:47,884 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 557 transitions. Word has length 17 [2021-03-10 21:53:47,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:53:47,884 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 557 transitions. [2021-03-10 21:53:47,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:53:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 557 transitions. [2021-03-10 21:53:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:53:47,884 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:53:47,884 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 21:53:48,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2612 [2021-03-10 21:53:48,085 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:53:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:53:48,085 INFO L82 PathProgramCache]: Analyzing trace with hash -303030390, now seen corresponding path program 69 times [2021-03-10 21:53:48,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:53:48,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556463395] [2021-03-10 21:53:48,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:53:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:53:48,277 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-03-10 21:53:48,463 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-03-10 21:53:48,630 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2021-03-10 21:53:48,799 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2021-03-10 21:53:49,039 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-03-10 21:53:49,141 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 21:53:49,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556463395] [2021-03-10 21:53:49,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953379326] [2021-03-10 21:53:49,141 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 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:53:49,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:53:49,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:53:49,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:53:49,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:53:49,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:49,694 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:49,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:53:49,711 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:49,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:53:49,727 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:49,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:53:49,743 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:49,948 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:53:49,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:49,953 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:53:49,954 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:123, output treesize:111 [2021-03-10 21:53:50,239 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:53:50,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:50,357 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 27 treesize of output 21 [2021-03-10 21:53:50,363 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:50,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:50,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:53:50,380 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:50,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:50,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:53:50,392 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:50,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:50,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:53:50,405 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:50,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:50,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:53:50,417 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:50,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:50,425 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 37 treesize of output 29 [2021-03-10 21:53:50,429 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:53:50,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:50,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:53:50,440 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2021-03-10 21:53:50,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:50,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:50,452 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:50,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:50,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:53:50,463 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:50,471 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 15 treesize of output 11 [2021-03-10 21:53:50,474 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:51,348 WARN L205 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2021-03-10 21:53:51,350 INFO L628 ElimStorePlain]: treesize reduction 200, result has 54.8 percent of original size [2021-03-10 21:53:51,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:51,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:53:51,368 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:51,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:51,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:53:51,387 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:51,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:51,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:53:51,407 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:51,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:51,420 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 11 treesize of output 3 [2021-03-10 21:53:51,425 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:51,477 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:51,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:51,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:53:51,495 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:51,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:51,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:53:51,513 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:51,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:51,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:53:51,529 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:51,596 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:51,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:53:51,609 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 21 treesize of output 7 [2021-03-10 21:53:51,615 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:51,625 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 11 treesize of output 3 [2021-03-10 21:53:51,631 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:53:51,683 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:52,130 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:53:52,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:53:52,135 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:53:52,135 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 2 variables, input treesize:343, output treesize:143 [2021-03-10 21:53:52,663 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:53:52,994 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:53:53,024 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 21:53:53,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:53:53,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-03-10 21:53:53,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273427624] [2021-03-10 21:53:53,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:53:53,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:53:53,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:53:53,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:53:53,025 INFO L87 Difference]: Start difference. First operand 189 states and 557 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:53:53,416 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2021-03-10 21:53:53,870 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2021-03-10 21:53:54,607 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2021-03-10 21:53:55,546 WARN L205 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2021-03-10 21:53:56,999 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-03-10 21:53:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:53:57,303 INFO L93 Difference]: Finished difference Result 271 states and 779 transitions. [2021-03-10 21:53:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:53:57,307 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 17 [2021-03-10 21:53:57,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:53:57,308 INFO L225 Difference]: With dead ends: 271 [2021-03-10 21:53:57,308 INFO L226 Difference]: Without dead ends: 267 [2021-03-10 21:53:57,308 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 5173.1ms TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:53:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-03-10 21:53:57,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 187. [2021-03-10 21:53:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9516129032258065) internal successors, (549), 186 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 21:53:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 549 transitions. [2021-03-10 21:53:57,311 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 549 transitions. Word has length 17 [2021-03-10 21:53:57,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:53:57,311 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 549 transitions. [2021-03-10 21:53:57,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:53:57,311 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 549 transitions. [2021-03-10 21:53:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:53:57,312 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:53:57,312 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 21:53:57,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2636 [2021-03-10 21:53:57,512 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:53:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:53:57,512 INFO L82 PathProgramCache]: Analyzing trace with hash -129782698, now seen corresponding path program 70 times [2021-03-10 21:53:57,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:53:57,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995374802] [2021-03-10 21:53:57,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:53:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:53:57,719 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2021-03-10 21:53:57,952 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-10 21:53:58,136 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-03-10 21:53:58,326 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 21:53:58,609 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-03-10 21:53:58,792 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2021-03-10 21:53:58,961 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 21:53:58,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995374802] [2021-03-10 21:53:58,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030834470] [2021-03-10 21:53:58,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:53:58,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:53:58,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:53:58,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:53:58,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:53:59,682 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:54:00,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:00,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:00,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:54:00,146 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:00,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:00,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:54:00,163 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:00,538 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-03-10 21:54:00,540 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:00,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:00,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:00,557 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 25 treesize of output 19 [2021-03-10 21:54:00,563 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:00,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:00,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:54:00,583 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:00,952 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 21:54:00,953 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:00,980 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:54:00,980 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:190, output treesize:180 [2021-03-10 21:54:01,304 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 21:54:01,770 INFO L446 ElimStorePlain]: Different costs {1=[array_0], 10=[array_2]} [2021-03-10 21:54:01,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:01,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:54:01,792 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:54:01,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:01,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:54:01,813 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:01,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:01,827 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 35 treesize of output 27 [2021-03-10 21:54:01,833 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2021-03-10 21:54:01,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:01,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:54:01,855 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:01,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:01,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:54:01,877 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:01,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:01,893 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 28 treesize of output 22 [2021-03-10 21:54:01,898 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:01,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:01,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 30 [2021-03-10 21:54:01,921 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:01,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:01,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:54:01,952 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:01,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:01,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:54:01,975 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:01,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:54:02,000 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:03,603 WARN L205 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2021-03-10 21:54:03,604 INFO L628 ElimStorePlain]: treesize reduction 290, result has 57.0 percent of original size [2021-03-10 21:54:03,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:54:03,629 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:03,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:54:03,653 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:03,757 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-03-10 21:54:03,759 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:03,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:54:03,783 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:03,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,800 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 46 treesize of output 15 [2021-03-10 21:54:03,806 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:03,889 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:03,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,912 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 11 treesize of output 3 [2021-03-10 21:54:03,917 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:03,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:54:03,940 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:03,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:03,958 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 20 treesize of output 9 [2021-03-10 21:54:03,964 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:04,020 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:04,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:04,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:04,038 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 21 treesize of output 7 [2021-03-10 21:54:04,043 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:04,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:04,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:04,060 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 21 treesize of output 7 [2021-03-10 21:54:04,066 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:04,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:04,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:54:04,084 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:04,140 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:04,884 WARN L205 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:54:04,886 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:04,891 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:54:04,891 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 6 variables, input treesize:509, output treesize:208 [2021-03-10 21:54:05,924 WARN L205 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2021-03-10 21:54:06,426 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2021-03-10 21:54:06,494 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 21:54:06,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:54:06,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:54:06,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429411113] [2021-03-10 21:54:06,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:54:06,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:54:06,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:54:06,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:54:06,495 INFO L87 Difference]: Start difference. First operand 187 states and 549 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:54:07,011 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-03-10 21:54:07,758 WARN L205 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-03-10 21:54:09,075 WARN L205 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2021-03-10 21:54:11,356 WARN L205 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2021-03-10 21:54:12,836 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-03-10 21:54:13,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:54:13,387 INFO L93 Difference]: Finished difference Result 261 states and 754 transitions. [2021-03-10 21:54:13,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:54:13,390 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:54:13,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:54:13,391 INFO L225 Difference]: With dead ends: 261 [2021-03-10 21:54:13,391 INFO L226 Difference]: Without dead ends: 257 [2021-03-10 21:54:13,391 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 8574.7ms TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:54:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-03-10 21:54:13,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 181. [2021-03-10 21:54:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.95) internal successors, (531), 180 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:54:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 531 transitions. [2021-03-10 21:54:13,394 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 531 transitions. Word has length 17 [2021-03-10 21:54:13,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:54:13,394 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 531 transitions. [2021-03-10 21:54:13,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:54:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 531 transitions. [2021-03-10 21:54:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:54:13,394 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:54:13,395 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 21:54:13,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2652 [2021-03-10 21:54:13,595 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:54:13,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:54:13,595 INFO L82 PathProgramCache]: Analyzing trace with hash -28866952, now seen corresponding path program 71 times [2021-03-10 21:54:13,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:54:13,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115271354] [2021-03-10 21:54:13,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:54:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:54:13,849 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-03-10 21:54:14,007 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-10 21:54:14,181 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 21:54:14,374 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-03-10 21:54:14,522 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 21:54:14,669 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 21:54:14,770 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 21:54:14,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115271354] [2021-03-10 21:54:14,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916381949] [2021-03-10 21:54:14,770 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 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:54:14,793 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:54:14,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:54:14,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:54:14,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:54:15,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:15,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:54:15,235 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:15,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:15,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:54:15,252 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:15,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:15,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:54:15,272 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:15,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:15,286 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 19 treesize of output 15 [2021-03-10 21:54:15,292 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:15,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:15,305 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 39 treesize of output 31 [2021-03-10 21:54:15,312 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2021-03-10 21:54:15,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 23 [2021-03-10 21:54:15,329 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:16,109 WARN L205 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-03-10 21:54:16,110 INFO L628 ElimStorePlain]: treesize reduction 84, result has 73.8 percent of original size [2021-03-10 21:54:16,114 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:54:16,114 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:241, output treesize:237 [2021-03-10 21:54:16,586 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:54:16,992 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 23 [2021-03-10 21:54:17,097 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 17 treesize of output 13 [2021-03-10 21:54:17,103 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:17,114 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 19 treesize of output 15 [2021-03-10 21:54:17,121 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:17,225 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-03-10 21:54:17,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:17,237 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 27 treesize of output 21 [2021-03-10 21:54:17,243 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:17,427 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2021-03-10 21:54:17,428 INFO L628 ElimStorePlain]: treesize reduction 20, result has 66.1 percent of original size [2021-03-10 21:54:17,429 INFO L518 ElimStorePlain]: Eliminatee v_prenex_736 vanished before elimination [2021-03-10 21:54:17,437 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 18 treesize of output 14 [2021-03-10 21:54:17,443 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:17,508 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:17,509 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:54:17,509 INFO L518 ElimStorePlain]: Eliminatee v_prenex_733 vanished before elimination [2021-03-10 21:54:17,512 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:54:17,512 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:102, output treesize:26 [2021-03-10 21:54:17,685 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 21:54:17,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:54:17,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-03-10 21:54:17,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035602961] [2021-03-10 21:54:17,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:54:17,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:54:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:54:17,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:54:17,686 INFO L87 Difference]: Start difference. First operand 181 states and 531 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:54:18,338 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2021-03-10 21:54:18,782 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2021-03-10 21:54:20,349 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-03-10 21:54:22,281 WARN L205 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-03-10 21:54:22,730 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 21:54:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:54:22,882 INFO L93 Difference]: Finished difference Result 268 states and 768 transitions. [2021-03-10 21:54:22,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:54:22,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 17 [2021-03-10 21:54:22,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:54:22,888 INFO L225 Difference]: With dead ends: 268 [2021-03-10 21:54:22,888 INFO L226 Difference]: Without dead ends: 264 [2021-03-10 21:54:22,888 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 6224.2ms TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-03-10 21:54:22,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-03-10 21:54:22,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 187. [2021-03-10 21:54:22,891 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 21:54:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 551 transitions. [2021-03-10 21:54:22,891 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 551 transitions. Word has length 17 [2021-03-10 21:54:22,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:54:22,891 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 551 transitions. [2021-03-10 21:54:22,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:54:22,891 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 551 transitions. [2021-03-10 21:54:22,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:54:22,892 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:54:22,892 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 21:54:23,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2696,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:54:23,095 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:54:23,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:54:23,095 INFO L82 PathProgramCache]: Analyzing trace with hash -275487124, now seen corresponding path program 72 times [2021-03-10 21:54:23,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:54:23,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205067555] [2021-03-10 21:54:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:54:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:54:23,331 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-03-10 21:54:23,492 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-10 21:54:23,664 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-10 21:54:23,850 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-03-10 21:54:24,000 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 21:54:24,150 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 21:54:24,253 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 21:54:24,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205067555] [2021-03-10 21:54:24,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811663113] [2021-03-10 21:54:24,253 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 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:54:24,276 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 21:54:24,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:54:24,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:54:24,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:54:24,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:24,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:54:24,800 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:24,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:24,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:54:24,820 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:24,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:24,833 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 29 treesize of output 23 [2021-03-10 21:54:24,839 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:24,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:24,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2021-03-10 21:54:24,859 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:54:24,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:24,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:54:24,878 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:24,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:54:24,896 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:25,717 WARN L205 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-03-10 21:54:25,719 INFO L628 ElimStorePlain]: treesize reduction 84, result has 73.8 percent of original size [2021-03-10 21:54:25,723 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:54:25,723 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:241, output treesize:237 [2021-03-10 21:54:26,197 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:54:26,321 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_738, array_4, v_prenex_740, v_prenex_742], 1=[array_0, v_prenex_737, v_prenex_739, v_prenex_741]} [2021-03-10 21:54:26,338 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 27 treesize of output 21 [2021-03-10 21:54:26,344 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:26,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 37 [2021-03-10 21:54:26,365 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:26,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:54:26,385 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:26,398 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 29 treesize of output 23 [2021-03-10 21:54:26,404 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:26,418 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:54:26,423 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:26,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 35 [2021-03-10 21:54:26,443 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:26,457 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:54:26,462 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:26,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 23 [2021-03-10 21:54:26,481 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:27,208 WARN L205 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-03-10 21:54:27,210 INFO L628 ElimStorePlain]: treesize reduction 178, result has 56.9 percent of original size [2021-03-10 21:54:27,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:54:27,229 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:27,608 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-10 21:54:27,609 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:27,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:54:27,627 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:28,061 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 21:54:28,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:28,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:54:28,077 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:28,542 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 21:54:28,544 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:28,544 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-03-10 21:54:28,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:28,557 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 46 treesize of output 15 [2021-03-10 21:54:28,563 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:28,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:28,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:54:28,583 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:28,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:28,597 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 12 treesize of output 5 [2021-03-10 21:54:28,603 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:28,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:28,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:54:28,624 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:28,635 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 20 treesize of output 9 [2021-03-10 21:54:28,641 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:29,110 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-03-10 21:54:29,112 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:29,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:29,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:54:29,131 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:29,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:54:29,148 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:29,207 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:29,668 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:54:29,670 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:29,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:29,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:54:29,689 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:29,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:54:29,707 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:29,752 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:30,225 WARN L205 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:54:30,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:30,231 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:54:30,232 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 8 variables, input treesize:521, output treesize:139 [2021-03-10 21:54:30,780 WARN L205 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:54:31,081 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2021-03-10 21:54:31,154 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 21:54:31,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:54:31,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-03-10 21:54:31,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41414780] [2021-03-10 21:54:31,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:54:31,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:54:31,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:54:31,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:54:31,155 INFO L87 Difference]: Start difference. First operand 187 states and 551 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:54:31,880 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2021-03-10 21:54:32,363 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2021-03-10 21:54:33,833 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-03-10 21:54:35,743 WARN L205 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-03-10 21:54:37,567 WARN L205 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-03-10 21:54:37,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:54:37,853 INFO L93 Difference]: Finished difference Result 279 states and 801 transitions. [2021-03-10 21:54:37,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:54:37,856 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 17 [2021-03-10 21:54:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:54:37,856 INFO L225 Difference]: With dead ends: 279 [2021-03-10 21:54:37,856 INFO L226 Difference]: Without dead ends: 275 [2021-03-10 21:54:37,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 7752.5ms TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-03-10 21:54:37,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-03-10 21:54:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 185. [2021-03-10 21:54:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9510869565217392) internal successors, (543), 184 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 21:54:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 543 transitions. [2021-03-10 21:54:37,861 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 543 transitions. Word has length 17 [2021-03-10 21:54:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:54:37,861 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 543 transitions. [2021-03-10 21:54:37,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:54:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 543 transitions. [2021-03-10 21:54:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:54:37,862 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:54:37,862 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 21:54:38,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2713 [2021-03-10 21:54:38,077 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:54:38,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:54:38,077 INFO L82 PathProgramCache]: Analyzing trace with hash -102239432, now seen corresponding path program 73 times [2021-03-10 21:54:38,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:54:38,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50293671] [2021-03-10 21:54:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:54:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:54:38,329 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2021-03-10 21:54:38,499 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-03-10 21:54:38,688 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-03-10 21:54:38,930 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-03-10 21:54:39,338 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-03-10 21:54:39,591 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 21:54:39,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50293671] [2021-03-10 21:54:39,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235444689] [2021-03-10 21:54:39,591 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 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:54:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:54:39,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:54:39,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:54:40,416 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:54:40,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:40,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:40,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:54:40,910 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:40,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:40,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:54:40,931 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:41,346 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-03-10 21:54:41,347 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:41,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:41,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:41,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:54:41,371 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:41,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:41,385 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 15 treesize of output 11 [2021-03-10 21:54:41,391 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:41,792 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 21:54:41,793 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:41,823 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:54:41,823 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:190, output treesize:180 [2021-03-10 21:54:42,168 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 21:54:42,739 INFO L446 ElimStorePlain]: Different costs {1=[array_0], 10=[array_2]} [2021-03-10 21:54:42,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:42,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:54:42,761 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:42,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:42,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:54:42,782 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:54:42,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:42,797 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 35 treesize of output 27 [2021-03-10 21:54:42,804 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2021-03-10 21:54:42,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:42,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:54:42,825 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:42,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:42,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:54:42,846 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:42,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:42,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:54:42,871 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:42,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:42,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:54:42,899 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:42,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:42,915 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 29 treesize of output 23 [2021-03-10 21:54:42,922 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:42,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:42,938 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 28 treesize of output 22 [2021-03-10 21:54:42,944 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:42,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 30 [2021-03-10 21:54:42,965 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:44,706 WARN L205 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2021-03-10 21:54:44,708 INFO L628 ElimStorePlain]: treesize reduction 278, result has 58.8 percent of original size [2021-03-10 21:54:44,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:54:44,733 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:44,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:54:44,758 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:44,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:54:44,782 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:44,853 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:44,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,873 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 21 treesize of output 7 [2021-03-10 21:54:44,879 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:44,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,899 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 20 treesize of output 9 [2021-03-10 21:54:44,904 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:44,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:44,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:54:44,929 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:44,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:45,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:45,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:45,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:54:45,018 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:45,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:45,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:45,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 15 [2021-03-10 21:54:45,043 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:45,136 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:45,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:45,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:45,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:54:45,163 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:45,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:45,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:54:45,184 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:45,245 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:45,994 WARN L205 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-03-10 21:54:45,996 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:46,002 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:54:46,002 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 6 variables, input treesize:509, output treesize:208 [2021-03-10 21:54:47,137 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2021-03-10 21:54:47,471 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2021-03-10 21:54:47,547 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 21:54:47,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:54:47,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:54:47,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423138432] [2021-03-10 21:54:47,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:54:47,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:54:47,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:54:47,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:54:47,549 INFO L87 Difference]: Start difference. First operand 185 states and 543 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:54:48,109 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-03-10 21:54:49,193 WARN L205 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-03-10 21:54:50,219 WARN L205 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2021-03-10 21:54:52,004 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 120 DAG size of output: 94 [2021-03-10 21:54:53,593 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-03-10 21:54:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:54:54,208 INFO L93 Difference]: Finished difference Result 269 states and 776 transitions. [2021-03-10 21:54:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:54:54,213 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:54:54,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:54:54,214 INFO L225 Difference]: With dead ends: 269 [2021-03-10 21:54:54,214 INFO L226 Difference]: Without dead ends: 265 [2021-03-10 21:54:54,214 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 8188.7ms TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:54:54,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-03-10 21:54:54,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 183. [2021-03-10 21:54:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.9505494505494507) internal successors, (537), 182 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:54:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 537 transitions. [2021-03-10 21:54:54,217 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 537 transitions. Word has length 17 [2021-03-10 21:54:54,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:54:54,217 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 537 transitions. [2021-03-10 21:54:54,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:54:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 537 transitions. [2021-03-10 21:54:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:54:54,217 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:54:54,217 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 21:54:54,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2738,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:54:54,418 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:54:54,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:54:54,418 INFO L82 PathProgramCache]: Analyzing trace with hash -99613656, now seen corresponding path program 74 times [2021-03-10 21:54:54,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:54:54,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480731106] [2021-03-10 21:54:54,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:54:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:54:55,098 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-03-10 21:54:55,479 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-03-10 21:54:55,643 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-03-10 21:54:55,751 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 21:54:55,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480731106] [2021-03-10 21:54:55,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250554663] [2021-03-10 21:54:55,751 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 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:54:55,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:54:55,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:54:55,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:54:55,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:54:56,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:54:56,093 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:56,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:54:56,122 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:56,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:54:56,140 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:56,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:54:56,158 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:56,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:54:56,175 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:56,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:54:56,192 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:56,484 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 21:54:56,486 INFO L628 ElimStorePlain]: treesize reduction 32, result has 72.2 percent of original size [2021-03-10 21:54:56,490 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:54:56,490 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:141, output treesize:83 [2021-03-10 21:54:56,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:56,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:54:56,865 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:56,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:56,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:54:56,886 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:56,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:56,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:54:56,906 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:56,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:56,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:54:56,926 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:56,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:56,943 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 21:54:56,949 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:56,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:56,963 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 25 treesize of output 19 [2021-03-10 21:54:56,969 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:56,977 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:54:56,983 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:56,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:56,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 30 [2021-03-10 21:54:57,004 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:57,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:57,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:54:57,025 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 4 xjuncts. [2021-03-10 21:54:57,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:54:57,043 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2021-03-10 21:54:58,134 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2021-03-10 21:54:58,136 INFO L628 ElimStorePlain]: treesize reduction 172, result has 59.6 percent of original size [2021-03-10 21:54:58,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:58,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:54:58,154 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:58,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:58,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:54:58,175 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:58,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:58,189 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 46 treesize of output 15 [2021-03-10 21:54:58,196 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:58,280 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:58,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:58,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:54:58,301 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:58,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:58,315 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 20 treesize of output 9 [2021-03-10 21:54:58,322 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:58,384 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:58,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:58,397 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 21 treesize of output 7 [2021-03-10 21:54:58,403 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:58,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:58,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:54:58,423 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:58,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:54:58,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:54:58,443 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:58,455 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 21 treesize of output 7 [2021-03-10 21:54:58,461 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:54:58,523 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:59,011 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:54:59,012 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:54:59,017 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:54:59,017 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 2 variables, input treesize:355, output treesize:143 [2021-03-10 21:54:59,596 WARN L205 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:54:59,900 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2021-03-10 21:54:59,973 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 21:54:59,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:54:59,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-03-10 21:54:59,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832664124] [2021-03-10 21:54:59,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 21:54:59,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:54:59,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 21:54:59,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-03-10 21:54:59,974 INFO L87 Difference]: Start difference. First operand 183 states and 537 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:55:00,655 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-10 21:55:01,456 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2021-03-10 21:55:02,165 WARN L205 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2021-03-10 21:55:04,324 WARN L205 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2021-03-10 21:55:06,773 WARN L205 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2021-03-10 21:55:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:55:07,178 INFO L93 Difference]: Finished difference Result 303 states and 869 transitions. [2021-03-10 21:55:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:55:07,184 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 17 [2021-03-10 21:55:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:55:07,185 INFO L225 Difference]: With dead ends: 303 [2021-03-10 21:55:07,185 INFO L226 Difference]: Without dead ends: 299 [2021-03-10 21:55:07,185 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 8031.9ms TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-03-10 21:55:07,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-03-10 21:55:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 187. [2021-03-10 21:55:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9516129032258065) internal successors, (549), 186 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 21:55:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 549 transitions. [2021-03-10 21:55:07,188 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 549 transitions. Word has length 17 [2021-03-10 21:55:07,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:55:07,188 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 549 transitions. [2021-03-10 21:55:07,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 21:55:07,188 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 549 transitions. [2021-03-10 21:55:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:55:07,188 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:55:07,188 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 21:55:07,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2789 [2021-03-10 21:55:07,389 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:55:07,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:55:07,389 INFO L82 PathProgramCache]: Analyzing trace with hash 61528026, now seen corresponding path program 75 times [2021-03-10 21:55:07,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:55:07,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228129713] [2021-03-10 21:55:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:55:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:55:07,581 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2021-03-10 21:55:07,879 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-10 21:55:08,352 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2021-03-10 21:55:08,463 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 21:55:08,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228129713] [2021-03-10 21:55:08,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944387668] [2021-03-10 21:55:08,463 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 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:55:08,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:55:08,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:55:08,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:55:08,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:55:09,081 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 21:55:09,433 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 21:55:09,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:55:09,599 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:09,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:55:09,617 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:09,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:55:09,651 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:10,071 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-03-10 21:55:10,073 INFO L628 ElimStorePlain]: treesize reduction 16, result has 85.5 percent of original size [2021-03-10 21:55:10,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:55:10,092 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:10,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:55:10,111 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:10,321 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 21:55:10,323 INFO L628 ElimStorePlain]: treesize reduction 30, result has 62.0 percent of original size [2021-03-10 21:55:10,327 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 21:55:10,327 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:131, output treesize:49 [2021-03-10 21:55:10,647 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 20 treesize of output 16 [2021-03-10 21:55:10,654 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:10,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:55:10,672 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:10,788 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 21:55:10,790 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:10,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:55:10,808 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:10,819 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 19 treesize of output 15 [2021-03-10 21:55:10,826 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:10,902 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:10,903 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:55:10,903 INFO L518 ElimStorePlain]: Eliminatee v_prenex_750 vanished before elimination [2021-03-10 21:55:10,910 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 27 treesize of output 21 [2021-03-10 21:55:10,917 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:55:11,062 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2021-03-10 21:55:11,064 INFO L628 ElimStorePlain]: treesize reduction 5, result has 83.9 percent of original size [2021-03-10 21:55:11,065 INFO L518 ElimStorePlain]: Eliminatee v_prenex_752 vanished before elimination [2021-03-10 21:55:11,068 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:55:11,068 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:102, output treesize:26 [2021-03-10 21:55:11,291 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 21:55:11,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:55:11,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-03-10 21:55:11,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664055933] [2021-03-10 21:55:11,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 21:55:11,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:55:11,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 21:55:11,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:55:11,292 INFO L87 Difference]: Start difference. First operand 187 states and 549 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 21:55:12,021 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 24 [2021-03-10 21:55:12,755 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-03-10 21:55:13,605 WARN L205 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2021-03-10 21:55:14,010 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-03-10 21:55:14,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:55:14,610 INFO L93 Difference]: Finished difference Result 239 states and 686 transitions. [2021-03-10 21:55:14,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 21:55:14,617 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 17 [2021-03-10 21:55:14,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:55:14,617 INFO L225 Difference]: With dead ends: 239 [2021-03-10 21:55:14,617 INFO L226 Difference]: Without dead ends: 231 [2021-03-10 21:55:14,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3866.6ms TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2021-03-10 21:55:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-03-10 21:55:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 192. [2021-03-10 21:55:14,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.9528795811518322) internal successors, (564), 191 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 21:55:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 564 transitions. [2021-03-10 21:55:14,620 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 564 transitions. Word has length 17 [2021-03-10 21:55:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:55:14,620 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 564 transitions. [2021-03-10 21:55:14,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 21:55:14,621 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 564 transitions. [2021-03-10 21:55:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:55:14,621 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:55:14,621 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 21:55:14,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2805,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:55:14,822 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:55:14,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:55:14,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1542765896, now seen corresponding path program 76 times [2021-03-10 21:55:14,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:55:14,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535890454] [2021-03-10 21:55:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:55:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:55:15,126 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2021-03-10 21:55:15,451 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-03-10 21:55:15,716 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-03-10 21:55:16,314 WARN L205 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-10 21:55:16,429 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 21:55:16,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535890454] [2021-03-10 21:55:16,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301549917] [2021-03-10 21:55:16,429 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 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:55:16,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:55:16,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:55:16,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:55:16,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:55:16,914 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-10 21:55:17,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:17,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:55:17,034 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:55:17,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:17,047 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 21:55:17,054 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:17,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:17,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:55:17,076 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:17,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:55:17,094 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:17,546 WARN L205 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:55:17,548 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:17,552 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:55:17,553 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:147, output treesize:207 [2021-03-10 21:55:17,968 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:55:18,043 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_757, array_2, v_prenex_753, v_prenex_755], 1=[v_prenex_756, v_prenex_758, array_4, v_prenex_754]} [2021-03-10 21:55:18,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:55:18,057 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:18,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:55:18,072 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:18,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:55:18,095 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:18,111 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 46 treesize of output 36 [2021-03-10 21:55:18,118 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:18,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:55:18,140 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:18,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:55:18,164 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:18,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:55:18,188 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:18,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:55:18,211 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:19,220 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2021-03-10 21:55:19,222 INFO L628 ElimStorePlain]: treesize reduction 239, result has 48.5 percent of original size [2021-03-10 21:55:19,236 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 7 treesize of output 5 [2021-03-10 21:55:19,245 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:19,694 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 21:55:19,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:19,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:55:19,716 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2021-03-10 21:55:20,203 WARN L205 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-03-10 21:55:20,205 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:20,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:55:20,225 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2021-03-10 21:55:20,756 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-03-10 21:55:20,758 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:20,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:20,774 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 11 treesize of output 3 [2021-03-10 21:55:20,780 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:20,793 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 21 treesize of output 7 [2021-03-10 21:55:20,800 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:20,870 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:21,429 WARN L205 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-03-10 21:55:21,430 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:21,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:21,446 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 11 treesize of output 3 [2021-03-10 21:55:21,453 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:21,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:21,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:55:21,474 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:21,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:21,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:55:21,496 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:21,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:21,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:55:21,518 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:21,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:55:21,537 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:22,029 WARN L205 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:55:22,031 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:22,031 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:55:22,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:22,045 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 20 treesize of output 9 [2021-03-10 21:55:22,052 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:22,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:55:22,072 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:22,138 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:22,658 WARN L205 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:55:22,660 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:22,664 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:55:22,664 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 8 variables, input treesize:521, output treesize:139 [2021-03-10 21:55:23,057 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:55:23,402 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:55:23,442 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 21:55:23,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:55:23,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-03-10 21:55:23,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891129821] [2021-03-10 21:55:23,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:55:23,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:55:23,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:55:23,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:55:23,443 INFO L87 Difference]: Start difference. First operand 192 states and 564 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:55:24,209 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2021-03-10 21:55:24,930 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2021-03-10 21:55:25,711 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2021-03-10 21:55:27,189 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-03-10 21:55:28,600 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-03-10 21:55:30,244 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-03-10 21:55:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:55:30,540 INFO L93 Difference]: Finished difference Result 230 states and 661 transitions. [2021-03-10 21:55:30,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:55:30,545 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 17 [2021-03-10 21:55:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:55:30,546 INFO L225 Difference]: With dead ends: 230 [2021-03-10 21:55:30,546 INFO L226 Difference]: Without dead ends: 222 [2021-03-10 21:55:30,546 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 7916.8ms TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2021-03-10 21:55:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-03-10 21:55:30,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 189. [2021-03-10 21:55:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.952127659574468) internal successors, (555), 188 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 21:55:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 555 transitions. [2021-03-10 21:55:30,549 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 555 transitions. Word has length 17 [2021-03-10 21:55:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:55:30,549 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 555 transitions. [2021-03-10 21:55:30,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:55:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 555 transitions. [2021-03-10 21:55:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:55:30,550 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:55:30,550 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 21:55:30,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2825 [2021-03-10 21:55:30,750 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:55:30,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:55:30,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2091682306, now seen corresponding path program 77 times [2021-03-10 21:55:30,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:55:30,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992609821] [2021-03-10 21:55:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:55:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:55:31,111 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-03-10 21:55:31,369 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-03-10 21:55:31,792 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-03-10 21:55:32,058 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-03-10 21:55:32,269 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 21:55:32,434 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2021-03-10 21:55:32,546 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 21:55:32,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992609821] [2021-03-10 21:55:32,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788283297] [2021-03-10 21:55:32,546 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 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:55:32,569 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:55:32,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:55:32,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:55:32,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:55:33,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:55:33,114 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:33,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:55:33,133 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:55:33,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:55:33,154 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:33,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:55:33,173 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:33,409 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:55:33,410 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:33,414 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:55:33,415 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:123, output treesize:111 [2021-03-10 21:55:33,739 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:55:33,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:33,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:55:33,976 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:55:33,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:33,991 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 28 treesize of output 22 [2021-03-10 21:55:33,998 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:55:34,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:34,015 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 15 treesize of output 11 [2021-03-10 21:55:34,022 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:34,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:34,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 29 [2021-03-10 21:55:34,045 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:55:34,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:34,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:55:34,067 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2021-03-10 21:55:34,078 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:55:34,084 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:34,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:34,099 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 25 treesize of output 19 [2021-03-10 21:55:34,106 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:34,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:34,121 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 25 treesize of output 19 [2021-03-10 21:55:34,128 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:34,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:34,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:55:34,149 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:34,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:55:34,168 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:35,265 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2021-03-10 21:55:35,266 INFO L628 ElimStorePlain]: treesize reduction 177, result has 57.8 percent of original size [2021-03-10 21:55:35,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:35,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:55:35,278 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:35,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:35,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:55:35,291 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:35,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:35,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:55:35,303 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:35,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:35,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:55:35,316 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:35,363 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:35,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:35,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:55:35,383 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:35,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:35,397 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 44 treesize of output 19 [2021-03-10 21:55:35,404 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:35,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:35,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:55:35,424 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:35,500 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:35,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:35,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:55:35,520 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:35,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:55:35,538 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:35,600 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:36,111 WARN L205 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:55:36,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:36,117 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:55:36,118 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 2 variables, input treesize:343, output treesize:143 [2021-03-10 21:55:36,728 WARN L205 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:55:37,052 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:55:37,087 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 21:55:37,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:55:37,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-03-10 21:55:37,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148387431] [2021-03-10 21:55:37,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 21:55:37,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:55:37,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 21:55:37,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:55:37,088 INFO L87 Difference]: Start difference. First operand 189 states and 555 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 21:55:37,697 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2021-03-10 21:55:38,348 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-03-10 21:55:39,487 WARN L205 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-03-10 21:55:40,768 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-03-10 21:55:41,668 WARN L205 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:55:42,599 WARN L205 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:55:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:55:43,092 INFO L93 Difference]: Finished difference Result 227 states and 663 transitions. [2021-03-10 21:55:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 21:55:43,098 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 17 [2021-03-10 21:55:43,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:55:43,099 INFO L225 Difference]: With dead ends: 227 [2021-03-10 21:55:43,099 INFO L226 Difference]: Without dead ends: 223 [2021-03-10 21:55:43,099 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 7142.2ms TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2021-03-10 21:55:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-03-10 21:55:43,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 191. [2021-03-10 21:55:43,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.9526315789473685) internal successors, (561), 190 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 21:55:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 561 transitions. [2021-03-10 21:55:43,102 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 561 transitions. Word has length 17 [2021-03-10 21:55:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:55:43,102 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 561 transitions. [2021-03-10 21:55:43,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 21:55:43,102 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 561 transitions. [2021-03-10 21:55:43,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:55:43,102 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:55:43,102 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 21:55:43,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2842 [2021-03-10 21:55:43,311 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:55:43,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:55:43,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1276876152, now seen corresponding path program 78 times [2021-03-10 21:55:43,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:55:43,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568581024] [2021-03-10 21:55:43,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:55:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:55:43,558 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2021-03-10 21:55:43,772 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2021-03-10 21:55:44,026 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-10 21:55:44,289 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-03-10 21:55:44,583 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-03-10 21:55:44,809 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 21:55:44,937 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 21:55:44,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568581024] [2021-03-10 21:55:44,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933013715] [2021-03-10 21:55:44,938 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 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:55:44,960 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:55:44,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:55:44,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 21:55:44,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:55:45,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:45,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:45,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:55:45,704 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:45,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:45,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:55:45,726 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:46,022 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 21:55:46,024 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:46,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:46,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:46,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:55:46,048 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:46,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:46,061 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 27 treesize of output 21 [2021-03-10 21:55:46,069 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:55:46,366 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:55:46,368 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:46,402 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:55:46,402 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:137, output treesize:127 [2021-03-10 21:55:46,687 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-03-10 21:55:47,330 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_768, array_0, v_prenex_764, v_prenex_766], 1=[v_prenex_767, v_prenex_769, array_2, v_prenex_765]} [2021-03-10 21:55:47,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:55:47,350 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:47,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:55:47,385 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:47,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:55:47,407 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:47,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:55:47,428 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:48,335 WARN L205 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-03-10 21:55:48,337 INFO L628 ElimStorePlain]: treesize reduction 100, result has 65.4 percent of original size [2021-03-10 21:55:48,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:55:48,357 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:55:48,763 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-03-10 21:55:48,764 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:48,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:55:48,785 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:55:49,234 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-03-10 21:55:49,236 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:49,250 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 7 treesize of output 5 [2021-03-10 21:55:49,258 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:49,680 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-10 21:55:49,682 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:49,683 INFO L518 ElimStorePlain]: Eliminatee v_prenex_767 vanished before elimination [2021-03-10 21:55:49,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:49,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:49,703 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 11 treesize of output 3 [2021-03-10 21:55:49,709 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:49,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:49,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:49,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:55:49,736 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:49,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:49,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:49,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:55:49,763 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:49,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:49,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:55:49,786 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:50,052 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-03-10 21:55:50,053 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:50,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:50,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:50,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:55:50,068 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:50,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:50,082 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 11 treesize of output 3 [2021-03-10 21:55:50,089 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:50,156 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:50,540 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-03-10 21:55:50,542 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:50,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:50,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:50,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:55:50,568 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:50,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:50,583 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 20 treesize of output 9 [2021-03-10 21:55:50,590 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:50,656 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:51,084 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:55:51,086 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:51,096 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 21:55:51,096 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 12 variables, input treesize:317, output treesize:70 [2021-03-10 21:55:51,399 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-03-10 21:55:51,496 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 21:55:51,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:55:51,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-03-10 21:55:51,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665748085] [2021-03-10 21:55:51,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:55:51,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:55:51,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:55:51,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:55:51,497 INFO L87 Difference]: Start difference. First operand 191 states and 561 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:55:52,146 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2021-03-10 21:55:52,951 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-03-10 21:55:53,945 WARN L205 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2021-03-10 21:55:54,462 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2021-03-10 21:55:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:55:54,862 INFO L93 Difference]: Finished difference Result 219 states and 638 transitions. [2021-03-10 21:55:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:55:54,867 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:55:54,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:55:54,868 INFO L225 Difference]: With dead ends: 219 [2021-03-10 21:55:54,868 INFO L226 Difference]: Without dead ends: 215 [2021-03-10 21:55:54,868 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 4365.7ms TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:55:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-03-10 21:55:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 189. [2021-03-10 21:55:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.952127659574468) internal successors, (555), 188 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 21:55:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 555 transitions. [2021-03-10 21:55:54,871 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 555 transitions. Word has length 17 [2021-03-10 21:55:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:55:54,871 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 555 transitions. [2021-03-10 21:55:54,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:55:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 555 transitions. [2021-03-10 21:55:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:55:54,871 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:55:54,871 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 21:55:55,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2860 [2021-03-10 21:55:55,090 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:55:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:55:55,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1996192008, now seen corresponding path program 79 times [2021-03-10 21:55:55,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:55:55,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256798505] [2021-03-10 21:55:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:55:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:55:55,428 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2021-03-10 21:55:55,682 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-10 21:55:56,047 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-03-10 21:55:56,236 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-10 21:55:56,476 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 21:55:56,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256798505] [2021-03-10 21:55:56,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222732386] [2021-03-10 21:55:56,476 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 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:55:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:55:56,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:55:56,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:55:56,965 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 21:55:57,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:57,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:57,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:55:57,073 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:57,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:57,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:57,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:55:57,097 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:55:57,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:57,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:57,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:55:57,124 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:57,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:57,138 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 25 treesize of output 19 [2021-03-10 21:55:57,145 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:57,688 WARN L205 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 21:55:57,690 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:55:57,695 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:55:57,695 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:193, output treesize:253 [2021-03-10 21:55:58,249 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 21:55:58,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:55:58,625 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,654 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 30 treesize of output 24 [2021-03-10 21:55:58,662 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:55:58,686 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:55:58,724 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:55:58,761 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,784 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 30 treesize of output 24 [2021-03-10 21:55:58,791 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2021-03-10 21:55:58,823 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:55:58,857 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:55:58,890 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,909 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:55:58,916 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,938 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 48 treesize of output 38 [2021-03-10 21:55:58,942 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,955 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:55:58,962 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:55:58,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:58,990 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 27 treesize of output 21 [2021-03-10 21:55:58,998 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2021-03-10 21:55:59,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:55:59,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:55:59,026 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2021-03-10 21:56:00,720 WARN L205 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2021-03-10 21:56:00,722 INFO L628 ElimStorePlain]: treesize reduction 211, result has 61.1 percent of original size [2021-03-10 21:56:00,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:56:00,749 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:00,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,769 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 11 treesize of output 3 [2021-03-10 21:56:00,776 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:00,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,796 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 11 treesize of output 3 [2021-03-10 21:56:00,803 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:00,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,823 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 21 treesize of output 7 [2021-03-10 21:56:00,830 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:00,900 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:00,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,921 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 21 treesize of output 7 [2021-03-10 21:56:00,928 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:00,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:56:00,955 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:00,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:00,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:56:00,983 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:00,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:01,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:01,003 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 20 treesize of output 9 [2021-03-10 21:56:01,010 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:01,084 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:01,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:01,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:56:01,107 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:01,958 WARN L205 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:56:01,960 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:01,967 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:56:01,967 INFO L247 ElimStorePlain]: Needed 24 recursive calls to eliminate 3 variables, input treesize:687, output treesize:169 [2021-03-10 21:56:02,696 WARN L205 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:56:03,100 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:56:03,138 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 21:56:03,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:56:03,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-03-10 21:56:03,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613051802] [2021-03-10 21:56:03,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:56:03,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:56:03,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:56:03,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:56:03,140 INFO L87 Difference]: Start difference. First operand 189 states and 555 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:56:04,214 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-03-10 21:56:05,703 WARN L205 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-03-10 21:56:06,767 WARN L205 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:56:06,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:56:06,957 INFO L93 Difference]: Finished difference Result 231 states and 660 transitions. [2021-03-10 21:56:06,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:56:06,963 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17 [2021-03-10 21:56:06,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:56:06,964 INFO L225 Difference]: With dead ends: 231 [2021-03-10 21:56:06,964 INFO L226 Difference]: Without dead ends: 227 [2021-03-10 21:56:06,964 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 5749.5ms TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:56:06,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-03-10 21:56:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 193. [2021-03-10 21:56:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.9739583333333335) internal successors, (571), 192 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 21:56:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 571 transitions. [2021-03-10 21:56:06,967 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 571 transitions. Word has length 17 [2021-03-10 21:56:06,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:56:06,967 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 571 transitions. [2021-03-10 21:56:06,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:56:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 571 transitions. [2021-03-10 21:56:06,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:56:06,967 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:56:06,967 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 21:56:07,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2897,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:56:07,168 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:56:07,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:56:07,168 INFO L82 PathProgramCache]: Analyzing trace with hash 627799272, now seen corresponding path program 80 times [2021-03-10 21:56:07,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:56:07,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418002373] [2021-03-10 21:56:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:56:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:56:07,488 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 21:56:07,771 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-10 21:56:08,168 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-03-10 21:56:08,360 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 21:56:08,555 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-10 21:56:08,678 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 21:56:08,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418002373] [2021-03-10 21:56:08,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092810000] [2021-03-10 21:56:08,678 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 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:56:08,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:56:08,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:56:08,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:56:08,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:56:09,198 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-03-10 21:56:09,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:09,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:09,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:56:09,301 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:09,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:09,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:09,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:56:09,327 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:56:09,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:09,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:09,346 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 25 treesize of output 19 [2021-03-10 21:56:09,352 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:09,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:09,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:56:09,374 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:09,949 WARN L205 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 21:56:09,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:09,955 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:56:09,955 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:193, output treesize:253 [2021-03-10 21:56:10,649 WARN L205 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 21:56:11,188 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2021-03-10 21:56:11,599 INFO L446 ElimStorePlain]: Different costs {1=[array_2], 15=[array_4]} [2021-03-10 21:56:11,606 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:56:11,611 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:11,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:56:11,627 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:11,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:56:11,652 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:56:11,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,670 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 28 treesize of output 22 [2021-03-10 21:56:11,677 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:11,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:56:11,698 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:11,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 24 [2021-03-10 21:56:11,736 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:11,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:56:11,762 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:11,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,781 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 27 treesize of output 21 [2021-03-10 21:56:11,789 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:56:11,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:11,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:56:11,813 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:12,555 WARN L205 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2021-03-10 21:56:12,557 INFO L628 ElimStorePlain]: treesize reduction 138, result has 47.7 percent of original size [2021-03-10 21:56:12,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:12,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:12,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:56:12,583 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:12,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:12,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:12,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:56:12,608 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:12,679 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:12,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:12,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:12,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:56:12,706 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:12,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:12,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:56:12,728 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:12,800 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:13,106 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:56:13,108 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:13,117 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-03-10 21:56:13,117 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 8 variables, input treesize:354, output treesize:41 [2021-03-10 21:56:13,363 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2021-03-10 21:56:13,432 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 21:56:13,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:56:13,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-03-10 21:56:13,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351551599] [2021-03-10 21:56:13,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:56:13,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:56:13,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:56:13,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:56:13,433 INFO L87 Difference]: Start difference. First operand 193 states and 571 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:56:14,672 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2021-03-10 21:56:16,491 WARN L205 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-03-10 21:56:19,447 WARN L205 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2021-03-10 21:56:19,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:56:19,981 INFO L93 Difference]: Finished difference Result 217 states and 623 transitions. [2021-03-10 21:56:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:56:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17 [2021-03-10 21:56:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:56:19,987 INFO L225 Difference]: With dead ends: 217 [2021-03-10 21:56:19,987 INFO L226 Difference]: Without dead ends: 213 [2021-03-10 21:56:19,987 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 7839.5ms TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:56:19,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-03-10 21:56:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 190. [2021-03-10 21:56:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.9576719576719577) internal successors, (559), 189 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:56:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 559 transitions. [2021-03-10 21:56:19,990 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 559 transitions. Word has length 17 [2021-03-10 21:56:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:56:19,990 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 559 transitions. [2021-03-10 21:56:19,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:56:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 559 transitions. [2021-03-10 21:56:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:56:19,991 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:56:19,991 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 21:56:20,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2915,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:56:20,191 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:56:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:56:20,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1653608496, now seen corresponding path program 81 times [2021-03-10 21:56:20,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:56:20,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257838342] [2021-03-10 21:56:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:56:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:56:20,379 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 14 [2021-03-10 21:56:20,572 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2021-03-10 21:56:20,761 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 21:56:21,077 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-03-10 21:56:21,341 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 21:56:21,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257838342] [2021-03-10 21:56:21,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003570127] [2021-03-10 21:56:21,342 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 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:56:21,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-10 21:56:21,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:56:21,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:56:21,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:56:21,864 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-03-10 21:56:22,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:22,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:22,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:56:22,256 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:56:22,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:22,273 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 25 treesize of output 19 [2021-03-10 21:56:22,281 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:22,783 WARN L205 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:56:22,785 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:22,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:22,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:22,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:56:22,812 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:22,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:22,827 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 21:56:22,835 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:23,254 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-10 21:56:23,256 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:23,289 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:56:23,289 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:188, output treesize:178 [2021-03-10 21:56:23,663 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 21:56:24,330 INFO L446 ElimStorePlain]: Different costs {1=[array_0], 10=[array_2]} [2021-03-10 21:56:24,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:24,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:56:24,356 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:56:24,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:24,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:56:24,383 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:56:24,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:24,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:56:24,420 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:24,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:24,439 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 28 treesize of output 22 [2021-03-10 21:56:24,447 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:24,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:24,467 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 15 treesize of output 11 [2021-03-10 21:56:24,475 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:24,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:24,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:56:24,502 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-03-10 21:56:24,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:24,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:56:24,530 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:24,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:24,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 30 [2021-03-10 21:56:24,557 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:56:24,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:24,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:56:24,595 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:24,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:56:24,621 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:26,588 WARN L205 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 104 DAG size of output: 79 [2021-03-10 21:56:26,590 INFO L628 ElimStorePlain]: treesize reduction 282, result has 57.8 percent of original size [2021-03-10 21:56:26,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:56:26,625 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:26,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:56:26,653 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:26,778 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-03-10 21:56:26,780 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:26,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:56:26,808 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:26,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:56:26,835 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:26,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:56:26,863 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:26,935 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:26,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,957 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 44 treesize of output 19 [2021-03-10 21:56:26,964 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:26,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:26,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 11 [2021-03-10 21:56:26,992 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:27,095 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-03-10 21:56:27,097 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:27,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:27,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:27,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:56:27,126 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:27,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:27,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:27,146 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 21 treesize of output 7 [2021-03-10 21:56:27,153 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:27,224 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:27,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:27,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:56:27,246 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:28,141 WARN L205 SmtUtils]: Spent 894.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-03-10 21:56:28,143 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:28,149 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:56:28,149 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 6 variables, input treesize:505, output treesize:205 [2021-03-10 21:56:29,226 WARN L205 SmtUtils]: Spent 970.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-03-10 21:56:29,777 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2021-03-10 21:56:29,874 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 21:56:29,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:56:29,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-03-10 21:56:29,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005733721] [2021-03-10 21:56:29,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:56:29,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:56:29,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:56:29,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:56:29,875 INFO L87 Difference]: Start difference. First operand 190 states and 559 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:56:30,644 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2021-03-10 21:56:31,434 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-03-10 21:56:32,690 WARN L205 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2021-03-10 21:56:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:56:33,567 INFO L93 Difference]: Finished difference Result 219 states and 638 transitions. [2021-03-10 21:56:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 21:56:33,574 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:56:33,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:56:33,574 INFO L225 Difference]: With dead ends: 219 [2021-03-10 21:56:33,574 INFO L226 Difference]: Without dead ends: 215 [2021-03-10 21:56:33,575 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 5118.9ms TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-03-10 21:56:33,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-03-10 21:56:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 191. [2021-03-10 21:56:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.9526315789473685) internal successors, (561), 190 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 21:56:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 561 transitions. [2021-03-10 21:56:33,577 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 561 transitions. Word has length 17 [2021-03-10 21:56:33,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:56:33,577 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 561 transitions. [2021-03-10 21:56:33,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:56:33,578 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 561 transitions. [2021-03-10 21:56:33,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:56:33,578 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:56:33,578 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 21:56:33,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2932,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:56:33,778 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:56:33,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:56:33,779 INFO L82 PathProgramCache]: Analyzing trace with hash 2013298522, now seen corresponding path program 82 times [2021-03-10 21:56:33,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:56:33,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712871367] [2021-03-10 21:56:33,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:56:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:56:34,090 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-03-10 21:56:34,358 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-03-10 21:56:34,694 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-10 21:56:34,873 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-10 21:56:34,987 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 21:56:34,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712871367] [2021-03-10 21:56:34,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996114465] [2021-03-10 21:56:34,987 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 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:56:35,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:56:35,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:56:35,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:56:35,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:56:35,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:35,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:56:35,634 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:35,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:35,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:56:35,653 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:35,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:35,668 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 25 treesize of output 19 [2021-03-10 21:56:35,676 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:35,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:56:35,696 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:56:36,040 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 21:56:36,042 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:36,046 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:56:36,046 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:137, output treesize:127 [2021-03-10 21:56:36,491 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-03-10 21:56:36,893 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-03-10 21:56:37,092 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 28 treesize of output 22 [2021-03-10 21:56:37,098 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:37,111 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 19 treesize of output 15 [2021-03-10 21:56:37,117 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:37,130 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 30 treesize of output 24 [2021-03-10 21:56:37,137 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:37,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:56:37,156 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:37,457 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 23 [2021-03-10 21:56:37,459 INFO L628 ElimStorePlain]: treesize reduction 95, result has 30.7 percent of original size [2021-03-10 21:56:37,459 INFO L518 ElimStorePlain]: Eliminatee v_prenex_779 vanished before elimination [2021-03-10 21:56:37,460 INFO L518 ElimStorePlain]: Eliminatee array_2 vanished before elimination [2021-03-10 21:56:37,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:56:37,478 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:37,552 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:37,553 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:56:37,553 INFO L518 ElimStorePlain]: Eliminatee v_prenex_781 vanished before elimination [2021-03-10 21:56:37,556 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:56:37,556 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:209, output treesize:26 [2021-03-10 21:56:37,784 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 21:56:37,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:56:37,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-03-10 21:56:37,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829326358] [2021-03-10 21:56:37,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:56:37,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:56:37,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:56:37,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:56:37,785 INFO L87 Difference]: Start difference. First operand 191 states and 561 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:56:38,515 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 25 [2021-03-10 21:56:39,238 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-03-10 21:56:40,211 WARN L205 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-03-10 21:56:40,840 WARN L205 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-03-10 21:56:42,192 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-03-10 21:56:43,368 WARN L205 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-03-10 21:56:44,953 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-03-10 21:56:45,533 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2021-03-10 21:56:45,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:56:45,637 INFO L93 Difference]: Finished difference Result 230 states and 648 transitions. [2021-03-10 21:56:45,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 21:56:45,642 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 17 [2021-03-10 21:56:45,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:56:45,643 INFO L225 Difference]: With dead ends: 230 [2021-03-10 21:56:45,643 INFO L226 Difference]: Without dead ends: 222 [2021-03-10 21:56:45,643 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 8403.0ms TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2021-03-10 21:56:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-03-10 21:56:45,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 188. [2021-03-10 21:56:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.9518716577540105) internal successors, (552), 187 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 21:56:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 552 transitions. [2021-03-10 21:56:45,646 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 552 transitions. Word has length 17 [2021-03-10 21:56:45,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:56:45,646 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 552 transitions. [2021-03-10 21:56:45,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:56:45,646 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 552 transitions. [2021-03-10 21:56:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:56:45,646 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:56:45,646 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 21:56:45,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2981 [2021-03-10 21:56:45,847 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:56:45,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:56:45,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1205884026, now seen corresponding path program 83 times [2021-03-10 21:56:45,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:56:45,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661649344] [2021-03-10 21:56:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:56:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:56:46,254 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 21:56:46,546 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2021-03-10 21:56:46,939 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-03-10 21:56:47,231 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-03-10 21:56:47,534 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 21:56:47,660 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 21:56:47,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661649344] [2021-03-10 21:56:47,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490773436] [2021-03-10 21:56:47,661 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 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:56:47,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 21:56:47,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:56:47,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:56:47,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:56:48,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:56:48,293 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:48,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:56:48,313 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:56:48,326 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 15 treesize of output 11 [2021-03-10 21:56:48,333 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:48,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:56:48,353 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:48,620 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:56:48,622 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:48,627 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:56:48,627 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:123, output treesize:111 [2021-03-10 21:56:49,019 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:56:49,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:49,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:56:49,269 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:56:49,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:49,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:56:49,289 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:56:49,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:49,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:56:49,307 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:49,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:49,324 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 37 treesize of output 29 [2021-03-10 21:56:49,333 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:56:49,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:49,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:56:49,357 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2021-03-10 21:56:49,369 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:56:49,376 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:49,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:49,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:56:49,400 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:49,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:49,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:56:49,424 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:49,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:49,439 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 27 treesize of output 21 [2021-03-10 21:56:49,446 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:49,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:56:49,467 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:50,770 WARN L205 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2021-03-10 21:56:50,772 INFO L628 ElimStorePlain]: treesize reduction 177, result has 57.8 percent of original size [2021-03-10 21:56:50,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:50,787 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 10 treesize of output 5 [2021-03-10 21:56:50,794 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:50,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:50,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:56:50,816 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:50,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:50,833 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 21 treesize of output 7 [2021-03-10 21:56:50,839 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:50,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:50,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:56:50,865 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:50,942 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:50,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:50,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:56:50,967 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:50,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:50,984 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 44 treesize of output 19 [2021-03-10 21:56:50,992 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:51,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:51,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:56:51,015 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:51,109 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:51,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:56:51,123 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 21 treesize of output 7 [2021-03-10 21:56:51,130 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:51,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:56:51,149 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:56:51,212 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:51,787 WARN L205 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:56:51,789 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:56:51,794 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:56:51,795 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 2 variables, input treesize:343, output treesize:143 [2021-03-10 21:56:52,455 WARN L205 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:56:52,783 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:56:52,817 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 21:56:52,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:56:52,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-03-10 21:56:52,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023660313] [2021-03-10 21:56:52,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:56:52,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:56:52,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:56:52,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:56:52,818 INFO L87 Difference]: Start difference. First operand 188 states and 552 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:56:53,726 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-03-10 21:56:54,020 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2021-03-10 21:56:54,637 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-03-10 21:56:55,777 WARN L205 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-03-10 21:56:56,891 WARN L205 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2021-03-10 21:56:58,290 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-03-10 21:56:59,107 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-03-10 21:57:00,487 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-03-10 21:57:00,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:57:00,818 INFO L93 Difference]: Finished difference Result 251 states and 723 transitions. [2021-03-10 21:57:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 21:57:00,824 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 17 [2021-03-10 21:57:00,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:57:00,825 INFO L225 Difference]: With dead ends: 251 [2021-03-10 21:57:00,825 INFO L226 Difference]: Without dead ends: 243 [2021-03-10 21:57:00,825 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 9277.4ms TimeCoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2021-03-10 21:57:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-03-10 21:57:00,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 192. [2021-03-10 21:57:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.9528795811518322) internal successors, (564), 191 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 21:57:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 564 transitions. [2021-03-10 21:57:00,828 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 564 transitions. Word has length 17 [2021-03-10 21:57:00,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:57:00,828 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 564 transitions. [2021-03-10 21:57:00,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:57:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 564 transitions. [2021-03-10 21:57:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:57:00,828 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:57:00,829 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 21:57:01,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3000 [2021-03-10 21:57:01,036 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:57:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:57:01,036 INFO L82 PathProgramCache]: Analyzing trace with hash 391077872, now seen corresponding path program 84 times [2021-03-10 21:57:01,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:57:01,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343654107] [2021-03-10 21:57:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:57:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:57:01,221 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 14 [2021-03-10 21:57:01,476 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-03-10 21:57:01,824 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-03-10 21:57:02,049 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 21:57:02,390 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-03-10 21:57:02,621 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2021-03-10 21:57:02,808 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 21:57:02,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343654107] [2021-03-10 21:57:02,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209538617] [2021-03-10 21:57:02,808 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 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:57:02,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:57:02,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:57:02,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:57:02,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:57:03,275 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-10 21:57:03,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:57:03,504 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:03,516 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 15 treesize of output 11 [2021-03-10 21:57:03,522 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:03,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:57:03,540 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:03,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:57:03,558 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:03,875 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 21:57:03,876 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:03,907 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:57:03,908 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:147, output treesize:137 [2021-03-10 21:57:04,247 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 21:57:04,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:57:04,856 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:04,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,873 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 19 treesize of output 15 [2021-03-10 21:57:04,878 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:04,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,897 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 29 treesize of output 23 [2021-03-10 21:57:04,904 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:04,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,921 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 35 treesize of output 27 [2021-03-10 21:57:04,928 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2021-03-10 21:57:04,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:57:04,962 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:04,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:04,980 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 17 treesize of output 13 [2021-03-10 21:57:04,985 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:04,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:05,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:05,002 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 27 treesize of output 21 [2021-03-10 21:57:05,009 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:05,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:05,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:05,027 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 38 treesize of output 30 [2021-03-10 21:57:05,033 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:05,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:05,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:05,055 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 15 treesize of output 11 [2021-03-10 21:57:05,061 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:05,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:05,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:57:05,082 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:06,812 WARN L205 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-03-10 21:57:06,814 INFO L628 ElimStorePlain]: treesize reduction 142, result has 71.8 percent of original size [2021-03-10 21:57:06,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:06,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:06,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:57:06,837 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:06,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:06,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:06,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:57:06,861 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:06,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:06,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:06,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:57:06,886 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:06,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:06,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:06,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:57:06,911 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:06,997 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:07,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,016 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 20 treesize of output 9 [2021-03-10 21:57:07,022 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:07,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,040 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 20 treesize of output 9 [2021-03-10 21:57:07,046 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:07,107 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:07,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:57:07,131 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:07,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:57:07,155 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:07,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:07,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:57:07,240 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:07,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 15 [2021-03-10 21:57:07,263 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:07,350 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:07,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:07,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:57:07,370 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:08,130 WARN L205 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-03-10 21:57:08,132 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:08,143 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:57:08,144 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:407, output treesize:173 [2021-03-10 21:57:09,122 WARN L205 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-03-10 21:57:09,414 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2021-03-10 21:57:09,487 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 21:57:09,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:57:09,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-03-10 21:57:09,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275797361] [2021-03-10 21:57:09,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:57:09,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:57:09,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:57:09,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:57:09,488 INFO L87 Difference]: Start difference. First operand 192 states and 564 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:57:10,440 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2021-03-10 21:57:11,395 WARN L205 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2021-03-10 21:57:12,675 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-03-10 21:57:14,185 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-03-10 21:57:14,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:57:14,605 INFO L93 Difference]: Finished difference Result 236 states and 687 transitions. [2021-03-10 21:57:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:57:14,610 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17 [2021-03-10 21:57:14,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:57:14,611 INFO L225 Difference]: With dead ends: 236 [2021-03-10 21:57:14,611 INFO L226 Difference]: Without dead ends: 232 [2021-03-10 21:57:14,611 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 6893.8ms TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-03-10 21:57:14,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-03-10 21:57:14,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 190. [2021-03-10 21:57:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.9523809523809526) internal successors, (558), 189 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:57:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 558 transitions. [2021-03-10 21:57:14,613 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 558 transitions. Word has length 17 [2021-03-10 21:57:14,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:57:14,613 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 558 transitions. [2021-03-10 21:57:14,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:57:14,614 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 558 transitions. [2021-03-10 21:57:14,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:57:14,614 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:57:14,614 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 21:57:14,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3018,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:57:14,816 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:57:14,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:57:14,816 INFO L82 PathProgramCache]: Analyzing trace with hash 981448970, now seen corresponding path program 85 times [2021-03-10 21:57:14,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:57:14,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660994908] [2021-03-10 21:57:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:57:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:57:14,992 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2021-03-10 21:57:15,203 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2021-03-10 21:57:15,429 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-10 21:57:15,732 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-10 21:57:16,048 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-03-10 21:57:16,211 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 21:57:16,329 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 21:57:16,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660994908] [2021-03-10 21:57:16,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341216096] [2021-03-10 21:57:16,330 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 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:57:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:57:16,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:57:16,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:57:16,689 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-10 21:57:16,923 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 15 treesize of output 11 [2021-03-10 21:57:16,929 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:16,941 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 17 treesize of output 13 [2021-03-10 21:57:16,947 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:16,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:57:16,964 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:16,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:57:16,982 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:17,179 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-03-10 21:57:17,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:17,198 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:57:17,198 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:119, output treesize:91 [2021-03-10 21:57:17,768 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-03-10 21:57:18,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:57:18,091 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:18,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:57:18,114 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:18,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:57:18,138 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:18,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:57:18,178 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:18,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:57:18,202 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:18,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:57:18,227 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:18,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:57:18,253 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:18,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:18,268 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 19 treesize of output 15 [2021-03-10 21:57:18,274 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:19,749 WARN L205 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-03-10 21:57:19,751 INFO L628 ElimStorePlain]: treesize reduction 43, result has 87.0 percent of original size [2021-03-10 21:57:19,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:57:19,773 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:19,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:57:19,795 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:19,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:57:19,818 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:19,878 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:19,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:57:19,902 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:19,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:57:19,928 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:19,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:19,947 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 21 treesize of output 7 [2021-03-10 21:57:19,953 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:20,020 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:20,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:20,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:20,039 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 12 treesize of output 5 [2021-03-10 21:57:20,046 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:20,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:20,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:20,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:57:20,071 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:20,136 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:20,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:20,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-03-10 21:57:20,156 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:20,867 WARN L205 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-03-10 21:57:20,869 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:20,874 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:57:20,874 INFO L247 ElimStorePlain]: Needed 18 recursive calls to eliminate 6 variables, input treesize:333, output treesize:152 [2021-03-10 21:57:21,856 WARN L205 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-03-10 21:57:22,169 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-03-10 21:57:22,245 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 21:57:22,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:57:22,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-03-10 21:57:22,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738297925] [2021-03-10 21:57:22,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:57:22,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:57:22,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:57:22,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:57:22,246 INFO L87 Difference]: Start difference. First operand 190 states and 558 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:57:22,977 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2021-03-10 21:57:23,654 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2021-03-10 21:57:24,729 WARN L205 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2021-03-10 21:57:26,284 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2021-03-10 21:57:27,792 WARN L205 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2021-03-10 21:57:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:57:28,304 INFO L93 Difference]: Finished difference Result 270 states and 780 transitions. [2021-03-10 21:57:28,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:57:28,311 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17 [2021-03-10 21:57:28,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:57:28,312 INFO L225 Difference]: With dead ends: 270 [2021-03-10 21:57:28,312 INFO L226 Difference]: Without dead ends: 266 [2021-03-10 21:57:28,312 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 7394.2ms TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:57:28,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-03-10 21:57:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 188. [2021-03-10 21:57:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.9518716577540105) internal successors, (552), 187 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 21:57:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 552 transitions. [2021-03-10 21:57:28,315 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 552 transitions. Word has length 17 [2021-03-10 21:57:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:57:28,315 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 552 transitions. [2021-03-10 21:57:28,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 21:57:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 552 transitions. [2021-03-10 21:57:28,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:57:28,315 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:57:28,315 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 21:57:28,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3060,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:57:28,516 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:57:28,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:57:28,516 INFO L82 PathProgramCache]: Analyzing trace with hash 527178728, now seen corresponding path program 86 times [2021-03-10 21:57:28,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:57:28,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677657462] [2021-03-10 21:57:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:57:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:57:28,837 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 21:57:29,027 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-10 21:57:29,469 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2021-03-10 21:57:29,789 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-03-10 21:57:29,901 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 21:57:29,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677657462] [2021-03-10 21:57:29,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510903931] [2021-03-10 21:57:29,901 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 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:57:29,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:57:29,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:57:29,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:57:29,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:57:30,324 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-10 21:57:30,557 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:57:30,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:30,637 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 35 treesize of output 27 [2021-03-10 21:57:30,644 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:57:30,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:30,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:57:30,664 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:30,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:30,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:57:30,683 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:30,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:57:30,701 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:31,134 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:57:31,136 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:31,139 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:57:31,139 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:147, output treesize:207 [2021-03-10 21:57:31,706 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:57:31,874 INFO L446 ElimStorePlain]: Different costs {0=[array_2, v_prenex_790, v_prenex_792, v_prenex_788], 1=[v_prenex_789, v_prenex_791, array_4, v_prenex_793]} [2021-03-10 21:57:31,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:57:31,895 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:31,909 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 15 treesize of output 11 [2021-03-10 21:57:31,916 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:33,196 WARN L205 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-03-10 21:57:33,198 INFO L628 ElimStorePlain]: treesize reduction 191, result has 62.3 percent of original size [2021-03-10 21:57:33,210 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 27 treesize of output 21 [2021-03-10 21:57:33,217 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:33,843 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-03-10 21:57:33,845 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:33,857 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 24 [2021-03-10 21:57:33,865 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:33,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:57:33,885 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:33,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:57:33,905 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:33,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:57:33,925 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:33,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2021-03-10 21:57:33,945 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:33,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:57:33,964 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:34,927 WARN L205 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-03-10 21:57:34,929 INFO L628 ElimStorePlain]: treesize reduction 49, result has 82.7 percent of original size [2021-03-10 21:57:34,939 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 27 treesize of output 21 [2021-03-10 21:57:34,946 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:35,462 WARN L205 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-03-10 21:57:35,464 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:35,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:35,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:57:35,483 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:35,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:57:35,501 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:35,550 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:36,070 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-10 21:57:36,072 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:36,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:36,086 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 11 treesize of output 3 [2021-03-10 21:57:36,092 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:36,103 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 21 treesize of output 7 [2021-03-10 21:57:36,109 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:36,166 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:36,684 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 21:57:36,686 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:36,686 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:57:36,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:36,700 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 21 treesize of output 7 [2021-03-10 21:57:36,706 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:36,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:36,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:57:36,728 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:36,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:36,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:57:36,749 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:36,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:36,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:57:36,770 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:36,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:57:36,787 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:37,278 WARN L205 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:57:37,280 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:37,284 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:57:37,284 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 8 variables, input treesize:521, output treesize:139 [2021-03-10 21:57:37,850 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-03-10 21:57:38,191 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:57:38,227 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 21:57:38,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:57:38,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-03-10 21:57:38,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130736467] [2021-03-10 21:57:38,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:57:38,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:57:38,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:57:38,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:57:38,228 INFO L87 Difference]: Start difference. First operand 188 states and 552 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:57:38,985 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2021-03-10 21:57:39,470 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2021-03-10 21:57:40,180 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-03-10 21:57:41,696 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2021-03-10 21:57:42,663 WARN L205 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:57:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:57:43,052 INFO L93 Difference]: Finished difference Result 237 states and 692 transitions. [2021-03-10 21:57:43,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:57:43,058 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 17 [2021-03-10 21:57:43,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:57:43,058 INFO L225 Difference]: With dead ends: 237 [2021-03-10 21:57:43,058 INFO L226 Difference]: Without dead ends: 233 [2021-03-10 21:57:43,058 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 6362.4ms TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:57:43,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-03-10 21:57:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 192. [2021-03-10 21:57:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.9528795811518322) internal successors, (564), 191 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 21:57:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 564 transitions. [2021-03-10 21:57:43,061 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 564 transitions. Word has length 17 [2021-03-10 21:57:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:57:43,061 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 564 transitions. [2021-03-10 21:57:43,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:57:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 564 transitions. [2021-03-10 21:57:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:57:43,071 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:57:43,071 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 21:57:43,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3083 [2021-03-10 21:57:43,279 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:57:43,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:57:43,280 INFO L82 PathProgramCache]: Analyzing trace with hash 869762240, now seen corresponding path program 87 times [2021-03-10 21:57:43,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:57:43,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849728896] [2021-03-10 21:57:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:57:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:57:43,469 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 15 [2021-03-10 21:57:43,676 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-03-10 21:57:43,890 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-03-10 21:57:44,192 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-03-10 21:57:44,297 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 21:57:44,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849728896] [2021-03-10 21:57:44,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638086762] [2021-03-10 21:57:44,297 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 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:57:44,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-10 21:57:44,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:57:44,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 21:57:44,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:57:44,743 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-03-10 21:57:45,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:57:45,023 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:45,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:57:45,040 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:45,413 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:57:45,414 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:45,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:57:45,433 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:45,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:57:45,451 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:45,813 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-10 21:57:45,814 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:45,844 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-03-10 21:57:45,844 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:196, output treesize:186 [2021-03-10 21:57:46,190 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-10 21:57:46,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:57:46,820 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:46,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,840 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 38 treesize of output 30 [2021-03-10 21:57:46,847 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:46,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,868 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 25 treesize of output 19 [2021-03-10 21:57:46,874 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:46,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:57:46,902 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:46,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 23 [2021-03-10 21:57:46,929 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:46,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,950 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 25 treesize of output 19 [2021-03-10 21:57:46,957 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:46,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:46,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:57:46,984 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:46,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:47,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:47,004 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 35 treesize of output 27 [2021-03-10 21:57:47,011 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2021-03-10 21:57:47,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:47,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:47,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:57:47,038 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 4 xjuncts. [2021-03-10 21:57:47,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:47,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:57:47,063 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:49,136 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 107 DAG size of output: 83 [2021-03-10 21:57:49,138 INFO L628 ElimStorePlain]: treesize reduction 282, result has 59.2 percent of original size [2021-03-10 21:57:49,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:57:49,166 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:49,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:57:49,194 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:49,265 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:49,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,286 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 24 treesize of output 9 [2021-03-10 21:57:49,292 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:49,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:57:49,319 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:49,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:49,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:57:49,423 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:49,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,444 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 21 treesize of output 7 [2021-03-10 21:57:49,450 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:49,513 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:49,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:57:49,533 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:49,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:57:49,551 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:49,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 9 [2021-03-10 21:57:49,569 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:49,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:49,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 15 [2021-03-10 21:57:49,585 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:49,642 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:50,146 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-03-10 21:57:50,148 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:50,153 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:57:50,153 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 6 variables, input treesize:525, output treesize:199 [2021-03-10 21:57:51,039 WARN L205 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-03-10 21:57:51,461 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2021-03-10 21:57:51,528 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 21:57:51,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:57:51,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-03-10 21:57:51,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941277823] [2021-03-10 21:57:51,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 21:57:51,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:57:51,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 21:57:51,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-03-10 21:57:51,529 INFO L87 Difference]: Start difference. First operand 192 states and 564 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 21:57:52,302 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-03-10 21:57:52,593 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-03-10 21:57:53,147 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-03-10 21:57:53,839 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-03-10 21:57:54,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:57:54,313 INFO L93 Difference]: Finished difference Result 235 states and 686 transitions. [2021-03-10 21:57:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 21:57:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 17 [2021-03-10 21:57:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:57:54,318 INFO L225 Difference]: With dead ends: 235 [2021-03-10 21:57:54,318 INFO L226 Difference]: Without dead ends: 231 [2021-03-10 21:57:54,319 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4383.4ms TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-03-10 21:57:54,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-03-10 21:57:54,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 190. [2021-03-10 21:57:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.9523809523809526) internal successors, (558), 189 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:57:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 558 transitions. [2021-03-10 21:57:54,321 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 558 transitions. Word has length 17 [2021-03-10 21:57:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:57:54,321 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 558 transitions. [2021-03-10 21:57:54,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 21:57:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 558 transitions. [2021-03-10 21:57:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:57:54,321 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:57:54,321 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 21:57:54,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3100 [2021-03-10 21:57:54,535 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:57:54,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:57:54,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1237021880, now seen corresponding path program 88 times [2021-03-10 21:57:54,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:57:54,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459743987] [2021-03-10 21:57:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:57:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:57:54,803 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 21:57:55,124 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2021-03-10 21:57:55,396 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2021-03-10 21:57:55,469 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 21:57:55,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459743987] [2021-03-10 21:57:55,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948812109] [2021-03-10 21:57:55,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:57:55,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:57:55,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:57:55,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:57:55,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:57:55,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:55,803 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 17 treesize of output 13 [2021-03-10 21:57:55,807 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:55,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:55,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:57:55,819 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:55,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:55,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:57:55,833 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:55,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:57:55,846 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:56,043 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 21:57:56,044 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:56,047 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:57:56,047 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:125, output treesize:115 [2021-03-10 21:57:56,293 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-03-10 21:57:56,546 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 21:57:56,711 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_801, v_prenex_803, array_2, v_prenex_799], 1=[v_prenex_800, v_prenex_802, array_0, v_prenex_798]} [2021-03-10 21:57:56,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:57:56,727 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:56,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:57:56,742 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:57,448 WARN L205 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-03-10 21:57:57,450 INFO L628 ElimStorePlain]: treesize reduction 105, result has 68.2 percent of original size [2021-03-10 21:57:57,458 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 27 treesize of output 21 [2021-03-10 21:57:57,463 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:57,856 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-03-10 21:57:57,857 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:57:57,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:57:57,873 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:58,672 WARN L205 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2021-03-10 21:57:58,674 INFO L628 ElimStorePlain]: treesize reduction 8, result has 96.7 percent of original size [2021-03-10 21:57:58,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 30 [2021-03-10 21:57:58,689 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:57:58,698 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 28 treesize of output 22 [2021-03-10 21:57:58,703 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:58,713 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 21 treesize of output 17 [2021-03-10 21:57:58,718 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:58,729 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 19 treesize of output 15 [2021-03-10 21:57:58,733 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:59,561 WARN L205 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2021-03-10 21:57:59,563 INFO L628 ElimStorePlain]: treesize reduction 10, result has 96.0 percent of original size [2021-03-10 21:57:59,563 INFO L518 ElimStorePlain]: Eliminatee v_prenex_800 vanished before elimination [2021-03-10 21:57:59,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:57:59,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:57:59,580 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:59,590 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 10 treesize of output 5 [2021-03-10 21:57:59,595 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:57:59,633 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:00,037 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-10 21:58:00,039 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:00,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:00,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:58:00,055 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:00,066 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 21 treesize of output 7 [2021-03-10 21:58:00,071 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:00,119 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:00,517 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-03-10 21:58:00,519 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:00,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:00,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:58:00,535 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:00,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:00,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:58:00,551 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:00,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:00,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:58:00,568 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:00,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:00,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:58:00,584 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:00,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:58:00,598 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:00,658 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:01,040 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:58:01,042 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:01,046 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-03-10 21:58:01,046 INFO L247 ElimStorePlain]: Needed 18 recursive calls to eliminate 8 variables, input treesize:344, output treesize:140 [2021-03-10 21:58:01,503 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:58:01,796 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:58:01,821 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 21:58:01,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:58:01,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-03-10 21:58:01,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840644998] [2021-03-10 21:58:01,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 21:58:01,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:58:01,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 21:58:01,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-03-10 21:58:01,822 INFO L87 Difference]: Start difference. First operand 190 states and 558 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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 21:58:02,556 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2021-03-10 21:58:02,894 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2021-03-10 21:58:03,715 WARN L205 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-03-10 21:58:04,653 WARN L205 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-03-10 21:58:06,200 WARN L205 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2021-03-10 21:58:08,790 WARN L205 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2021-03-10 21:58:09,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:58:09,050 INFO L93 Difference]: Finished difference Result 277 states and 793 transitions. [2021-03-10 21:58:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:58:09,055 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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 17 [2021-03-10 21:58:09,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:58:09,055 INFO L225 Difference]: With dead ends: 277 [2021-03-10 21:58:09,055 INFO L226 Difference]: Without dead ends: 269 [2021-03-10 21:58:09,056 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 7719.7ms TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2021-03-10 21:58:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-03-10 21:58:09,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 190. [2021-03-10 21:58:09,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.9523809523809526) internal successors, (558), 189 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:58:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 558 transitions. [2021-03-10 21:58:09,058 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 558 transitions. Word has length 17 [2021-03-10 21:58:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:58:09,058 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 558 transitions. [2021-03-10 21:58:09,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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 21:58:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 558 transitions. [2021-03-10 21:58:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:58:09,058 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:58:09,058 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 21:58:09,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3145,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:58:09,259 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:58:09,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:58:09,259 INFO L82 PathProgramCache]: Analyzing trace with hash -176185004, now seen corresponding path program 89 times [2021-03-10 21:58:09,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:58:09,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149189046] [2021-03-10 21:58:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:58:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:58:09,537 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-03-10 21:58:09,678 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-10 21:58:09,815 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-03-10 21:58:10,116 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-10 21:58:10,316 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-03-10 21:58:10,387 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 21:58:10,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149189046] [2021-03-10 21:58:10,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268814115] [2021-03-10 21:58:10,387 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 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:58:10,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:58:10,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:58:10,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:58:10,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:58:11,059 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 21:58:11,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:58:11,202 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:11,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:58:11,216 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:11,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:58:11,230 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:11,550 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-03-10 21:58:11,551 INFO L628 ElimStorePlain]: treesize reduction 16, result has 85.5 percent of original size [2021-03-10 21:58:11,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:58:11,565 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:11,575 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 19 treesize of output 15 [2021-03-10 21:58:11,580 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:11,735 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 21:58:11,736 INFO L628 ElimStorePlain]: treesize reduction 30, result has 62.0 percent of original size [2021-03-10 21:58:11,739 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-03-10 21:58:11,739 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:131, output treesize:49 [2021-03-10 21:58:11,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-03-10 21:58:11,993 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:12,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-03-10 21:58:12,007 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:12,097 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:12,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:58:12,111 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:12,120 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 17 treesize of output 13 [2021-03-10 21:58:12,125 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:12,185 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:12,186 INFO L518 ElimStorePlain]: Eliminatee v_prenex_806 vanished before elimination [2021-03-10 21:58:12,186 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:58:12,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:58:12,198 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:58:12,309 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2021-03-10 21:58:12,310 INFO L628 ElimStorePlain]: treesize reduction 5, result has 83.9 percent of original size [2021-03-10 21:58:12,310 INFO L518 ElimStorePlain]: Eliminatee v_prenex_808 vanished before elimination [2021-03-10 21:58:12,313 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:58:12,314 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:102, output treesize:26 [2021-03-10 21:58:12,476 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 21:58:12,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:58:12,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-03-10 21:58:12,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014114413] [2021-03-10 21:58:12,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:58:12,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:58:12,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:58:12,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:58:12,477 INFO L87 Difference]: Start difference. First operand 190 states and 558 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:58:13,371 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-03-10 21:58:13,635 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2021-03-10 21:58:14,272 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2021-03-10 21:58:14,730 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-03-10 21:58:15,479 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2021-03-10 21:58:16,041 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-03-10 21:58:16,612 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2021-03-10 21:58:17,445 WARN L205 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2021-03-10 21:58:18,091 WARN L205 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2021-03-10 21:58:18,466 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2021-03-10 21:58:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:58:18,757 INFO L93 Difference]: Finished difference Result 254 states and 735 transitions. [2021-03-10 21:58:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 21:58:18,761 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 17 [2021-03-10 21:58:18,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:58:18,761 INFO L225 Difference]: With dead ends: 254 [2021-03-10 21:58:18,762 INFO L226 Difference]: Without dead ends: 250 [2021-03-10 21:58:18,762 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 6239.1ms TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2021-03-10 21:58:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-03-10 21:58:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 196. [2021-03-10 21:58:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.953846153846154) internal successors, (576), 195 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 21:58:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 576 transitions. [2021-03-10 21:58:18,764 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 576 transitions. Word has length 17 [2021-03-10 21:58:18,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:58:18,764 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 576 transitions. [2021-03-10 21:58:18,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 21:58:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 576 transitions. [2021-03-10 21:58:18,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:58:18,765 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:58:18,765 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 21:58:18,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3172 [2021-03-10 21:58:18,965 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:58:18,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:58:18,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1305052866, now seen corresponding path program 90 times [2021-03-10 21:58:18,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:58:18,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253909056] [2021-03-10 21:58:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:58:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:58:19,120 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 21:58:19,258 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 21:58:19,640 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-03-10 21:58:19,724 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 21:58:19,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253909056] [2021-03-10 21:58:19,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343972005] [2021-03-10 21:58:19,724 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 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:58:19,748 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 21:58:19,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:58:19,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 21:58:19,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:58:20,063 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-10 21:58:20,431 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 17 treesize of output 13 [2021-03-10 21:58:20,436 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:20,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:58:20,453 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:20,463 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 27 treesize of output 21 [2021-03-10 21:58:20,468 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:58:20,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:58:20,483 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:20,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:58:20,497 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:20,506 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 17 treesize of output 13 [2021-03-10 21:58:20,510 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:20,932 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-03-10 21:58:20,933 INFO L628 ElimStorePlain]: treesize reduction 23, result has 85.4 percent of original size [2021-03-10 21:58:20,936 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:58:20,937 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:181, output treesize:134 [2021-03-10 21:58:21,216 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 21:58:21,634 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:58:21,639 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:22,014 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2021-03-10 21:58:22,015 INFO L628 ElimStorePlain]: treesize reduction 55, result has 70.6 percent of original size [2021-03-10 21:58:22,015 INFO L518 ElimStorePlain]: Eliminatee v_prenex_812 vanished before elimination [2021-03-10 21:58:22,015 INFO L518 ElimStorePlain]: Eliminatee v_prenex_813 vanished before elimination [2021-03-10 21:58:22,015 INFO L518 ElimStorePlain]: Eliminatee v_prenex_814 vanished before elimination [2021-03-10 21:58:22,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:58:22,030 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:22,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-03-10 21:58:22,044 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:22,199 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-03-10 21:58:22,201 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:22,201 INFO L518 ElimStorePlain]: Eliminatee v_prenex_816 vanished before elimination [2021-03-10 21:58:22,210 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 19 treesize of output 15 [2021-03-10 21:58:22,215 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:22,396 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-03-10 21:58:22,397 INFO L628 ElimStorePlain]: treesize reduction 13, result has 83.8 percent of original size [2021-03-10 21:58:22,397 INFO L518 ElimStorePlain]: Eliminatee array_4 vanished before elimination [2021-03-10 21:58:22,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:58:22,410 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:22,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-03-10 21:58:22,422 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:22,530 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2021-03-10 21:58:22,532 INFO L628 ElimStorePlain]: treesize reduction 5, result has 83.9 percent of original size [2021-03-10 21:58:22,532 INFO L518 ElimStorePlain]: Eliminatee v_prenex_810 vanished before elimination [2021-03-10 21:58:22,535 INFO L550 ElimStorePlain]: Start of recursive call 1: 10 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-03-10 21:58:22,535 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 10 variables, input treesize:207, output treesize:26 [2021-03-10 21:58:22,714 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 21:58:22,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:58:22,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-03-10 21:58:22,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707970651] [2021-03-10 21:58:22,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:58:22,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:58:22,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:58:22,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:58:22,714 INFO L87 Difference]: Start difference. First operand 196 states and 576 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:58:23,415 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2021-03-10 21:58:23,645 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2021-03-10 21:58:24,186 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2021-03-10 21:58:24,577 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-03-10 21:58:25,220 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2021-03-10 21:58:25,719 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2021-03-10 21:58:26,530 WARN L205 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-03-10 21:58:27,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:58:27,004 INFO L93 Difference]: Finished difference Result 263 states and 756 transitions. [2021-03-10 21:58:27,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 21:58:27,008 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 17 [2021-03-10 21:58:27,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:58:27,009 INFO L225 Difference]: With dead ends: 263 [2021-03-10 21:58:27,009 INFO L226 Difference]: Without dead ends: 255 [2021-03-10 21:58:27,009 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4388.2ms TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-03-10 21:58:27,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-03-10 21:58:27,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 193. [2021-03-10 21:58:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.953125) internal successors, (567), 192 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:58:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 567 transitions. [2021-03-10 21:58:27,011 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 567 transitions. Word has length 17 [2021-03-10 21:58:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:58:27,011 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 567 transitions. [2021-03-10 21:58:27,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 21:58:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 567 transitions. [2021-03-10 21:58:27,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:58:27,012 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:58:27,012 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 21:58:27,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3197 [2021-03-10 21:58:27,221 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:58:27,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:58:27,221 INFO L82 PathProgramCache]: Analyzing trace with hash 733598060, now seen corresponding path program 91 times [2021-03-10 21:58:27,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:58:27,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336622030] [2021-03-10 21:58:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:58:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:58:27,514 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2021-03-10 21:58:27,669 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-03-10 21:58:27,904 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-03-10 21:58:28,152 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-03-10 21:58:28,324 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2021-03-10 21:58:28,483 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-03-10 21:58:28,568 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 21:58:28,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336622030] [2021-03-10 21:58:28,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410884678] [2021-03-10 21:58:28,569 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 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:58:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:58:28,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:58:28,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:58:28,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:28,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:28,908 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 15 treesize of output 11 [2021-03-10 21:58:28,913 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:28,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:28,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:28,927 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 35 treesize of output 27 [2021-03-10 21:58:28,932 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 4 xjuncts. [2021-03-10 21:58:28,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:28,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:28,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:58:28,950 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:28,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:28,970 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 25 treesize of output 19 [2021-03-10 21:58:28,975 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:29,308 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:58:29,309 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:29,313 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:58:29,313 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:147, output treesize:207 [2021-03-10 21:58:29,707 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:58:30,154 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-03-10 21:58:30,265 INFO L446 ElimStorePlain]: Different costs {0=[array_2], 1=[array_4]} [2021-03-10 21:58:30,276 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 25 treesize of output 19 [2021-03-10 21:58:30,282 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:30,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:58:30,303 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:30,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:58:30,321 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:30,338 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 48 treesize of output 38 [2021-03-10 21:58:30,343 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:30,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:58:30,364 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-03-10 21:58:30,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:58:30,385 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:30,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:58:30,405 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2021-03-10 21:58:30,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:58:30,427 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:30,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 24 [2021-03-10 21:58:30,450 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:30,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2021-03-10 21:58:30,472 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:30,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:58:30,493 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:30,507 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 30 treesize of output 24 [2021-03-10 21:58:30,512 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:30,523 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-03-10 21:58:30,527 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:30,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-03-10 21:58:30,545 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:31,566 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2021-03-10 21:58:31,568 INFO L628 ElimStorePlain]: treesize reduction 210, result has 55.5 percent of original size [2021-03-10 21:58:31,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,582 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 12 treesize of output 5 [2021-03-10 21:58:31,587 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:31,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:58:31,605 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:31,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-03-10 21:58:31,625 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:31,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:58:31,644 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:31,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:58:31,663 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:31,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:58:31,681 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:31,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:31,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2021-03-10 21:58:31,741 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:31,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:58:31,762 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:31,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:31,774 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 11 treesize of output 3 [2021-03-10 21:58:31,779 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:31,828 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:32,276 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-10 21:58:32,277 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:32,281 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-03-10 21:58:32,281 INFO L247 ElimStorePlain]: Needed 24 recursive calls to eliminate 2 variables, input treesize:563, output treesize:163 [2021-03-10 21:58:32,822 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-03-10 21:58:33,106 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-10 21:58:33,134 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 21:58:33,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:58:33,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-03-10 21:58:33,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929756169] [2021-03-10 21:58:33,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 21:58:33,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:58:33,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 21:58:33,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-03-10 21:58:33,135 INFO L87 Difference]: Start difference. First operand 193 states and 567 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:58:33,626 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 25 [2021-03-10 21:58:36,037 WARN L205 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-10 21:58:37,894 WARN L205 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2021-03-10 21:58:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:58:38,072 INFO L93 Difference]: Finished difference Result 297 states and 849 transitions. [2021-03-10 21:58:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:58:38,076 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:58:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:58:38,077 INFO L225 Difference]: With dead ends: 297 [2021-03-10 21:58:38,077 INFO L226 Difference]: Without dead ends: 293 [2021-03-10 21:58:38,077 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 6629.7ms TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:58:38,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-03-10 21:58:38,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 199. [2021-03-10 21:58:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.984848484848485) internal successors, (591), 198 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:58:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 591 transitions. [2021-03-10 21:58:38,080 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 591 transitions. Word has length 17 [2021-03-10 21:58:38,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:58:38,080 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 591 transitions. [2021-03-10 21:58:38,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:58:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 591 transitions. [2021-03-10 21:58:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:58:38,080 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:58:38,080 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 21:58:38,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3236,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:58:38,281 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:58:38,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:58:38,281 INFO L82 PathProgramCache]: Analyzing trace with hash -937377956, now seen corresponding path program 92 times [2021-03-10 21:58:38,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:58:38,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728646876] [2021-03-10 21:58:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:58:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:58:38,575 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-03-10 21:58:38,744 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-03-10 21:58:38,971 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-03-10 21:58:39,211 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-03-10 21:58:39,439 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 21:58:39,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728646876] [2021-03-10 21:58:39,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102131082] [2021-03-10 21:58:39,439 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 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:58:39,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 21:58:39,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:58:39,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:58:39,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:58:39,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:39,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:39,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:58:39,818 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:58:39,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:39,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:39,833 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 25 treesize of output 19 [2021-03-10 21:58:39,838 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:39,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:39,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:39,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:58:39,857 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:39,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:39,868 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 21:58:39,874 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:40,194 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:58:40,195 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:40,198 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:58:40,198 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:153, output treesize:213 [2021-03-10 21:58:40,598 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:58:41,048 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-03-10 21:58:41,613 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2021-03-10 21:58:41,917 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_822, v_prenex_824, array_2, v_prenex_820], 1=[v_prenex_823, v_prenex_825, array_4, v_prenex_821]} [2021-03-10 21:58:41,928 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 17 treesize of output 13 [2021-03-10 21:58:41,933 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:41,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:58:41,949 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:42,278 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2021-03-10 21:58:42,280 INFO L628 ElimStorePlain]: treesize reduction 158, result has 34.2 percent of original size [2021-03-10 21:58:42,289 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 27 treesize of output 21 [2021-03-10 21:58:42,295 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:58:42,429 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:58:42,430 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:42,439 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 27 treesize of output 21 [2021-03-10 21:58:42,443 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:58:42,591 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:58:42,593 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:42,593 INFO L518 ElimStorePlain]: Eliminatee v_prenex_820 vanished before elimination [2021-03-10 21:58:42,593 INFO L518 ElimStorePlain]: Eliminatee v_prenex_823 vanished before elimination [2021-03-10 21:58:42,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:42,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:42,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:58:42,612 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:42,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:42,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:58:42,628 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:42,679 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:42,853 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-03-10 21:58:42,855 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:42,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:42,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:42,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:58:42,873 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:42,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:42,884 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 20 treesize of output 9 [2021-03-10 21:58:42,889 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:42,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:43,072 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-10 21:58:43,073 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:43,073 INFO L518 ElimStorePlain]: Eliminatee v_prenex_821 vanished before elimination [2021-03-10 21:58:43,078 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-03-10 21:58:43,079 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 12 variables, input treesize:254, output treesize:41 [2021-03-10 21:58:43,263 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2021-03-10 21:58:43,311 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 21:58:43,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:58:43,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:58:43,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565501880] [2021-03-10 21:58:43,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:58:43,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:58:43,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:58:43,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:58:43,312 INFO L87 Difference]: Start difference. First operand 199 states and 591 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:58:43,798 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2021-03-10 21:58:46,064 WARN L205 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2021-03-10 21:58:46,692 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-03-10 21:58:46,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:58:46,827 INFO L93 Difference]: Finished difference Result 283 states and 812 transitions. [2021-03-10 21:58:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:58:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:58:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:58:46,832 INFO L225 Difference]: With dead ends: 283 [2021-03-10 21:58:46,832 INFO L226 Difference]: Without dead ends: 279 [2021-03-10 21:58:46,832 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 4945.5ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-03-10 21:58:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-03-10 21:58:46,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 196. [2021-03-10 21:58:46,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.9692307692307693) internal successors, (579), 195 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:58:46,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 579 transitions. [2021-03-10 21:58:46,834 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 579 transitions. Word has length 17 [2021-03-10 21:58:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:58:46,834 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 579 transitions. [2021-03-10 21:58:46,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:58:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 579 transitions. [2021-03-10 21:58:46,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:58:46,835 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:58:46,835 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 21:58:47,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3254 [2021-03-10 21:58:47,036 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:58:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:58:47,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1811118636, now seen corresponding path program 93 times [2021-03-10 21:58:47,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:58:47,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895948305] [2021-03-10 21:58:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:58:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:58:47,324 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-03-10 21:58:47,473 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-03-10 21:58:47,694 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-03-10 21:58:48,040 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 21:58:48,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895948305] [2021-03-10 21:58:48,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662541943] [2021-03-10 21:58:48,040 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 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:58:48,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 21:58:48,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:58:48,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:58:48,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:58:48,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:48,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:48,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-03-10 21:58:48,418 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2021-03-10 21:58:48,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:48,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:48,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:58:48,435 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:48,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:48,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:48,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:58:48,451 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:48,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:48,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 21:58:48,467 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:48,783 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:58:48,784 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:48,787 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:58:48,788 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:153, output treesize:213 [2021-03-10 21:58:49,197 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-03-10 21:58:49,632 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2021-03-10 21:58:49,940 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-03-10 21:58:50,255 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_834, array_2, v_prenex_830, v_prenex_832], 1=[v_prenex_833, v_prenex_835, array_4, v_prenex_831]} [2021-03-10 21:58:50,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-03-10 21:58:50,271 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:50,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:58:50,289 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:50,692 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2021-03-10 21:58:50,693 INFO L628 ElimStorePlain]: treesize reduction 158, result has 34.2 percent of original size [2021-03-10 21:58:50,701 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 27 treesize of output 21 [2021-03-10 21:58:50,706 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-03-10 21:58:50,829 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:58:50,830 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:50,838 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 27 treesize of output 21 [2021-03-10 21:58:50,843 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-03-10 21:58:51,019 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-03-10 21:58:51,020 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:51,020 INFO L518 ElimStorePlain]: Eliminatee v_prenex_832 vanished before elimination [2021-03-10 21:58:51,021 INFO L518 ElimStorePlain]: Eliminatee v_prenex_833 vanished before elimination [2021-03-10 21:58:51,021 INFO L518 ElimStorePlain]: Eliminatee v_prenex_835 vanished before elimination [2021-03-10 21:58:51,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:51,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:51,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-03-10 21:58:51,040 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:51,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:51,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 5 [2021-03-10 21:58:51,057 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:51,105 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:51,256 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-03-10 21:58:51,258 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:51,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:51,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:51,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-03-10 21:58:51,274 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:51,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-10 21:58:51,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-03-10 21:58:51,287 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:51,327 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:51,493 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-03-10 21:58:51,494 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:51,500 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-03-10 21:58:51,501 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 12 variables, input treesize:254, output treesize:41 [2021-03-10 21:58:51,679 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2021-03-10 21:58:51,727 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 21:58:51,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 21:58:51,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-03-10 21:58:51,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541287674] [2021-03-10 21:58:51,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 21:58:51,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 21:58:51,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 21:58:51,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-03-10 21:58:51,728 INFO L87 Difference]: Start difference. First operand 196 states and 579 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:58:52,301 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2021-03-10 21:58:53,866 WARN L205 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2021-03-10 21:58:55,139 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2021-03-10 21:58:56,628 WARN L205 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2021-03-10 21:58:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 21:58:56,851 INFO L93 Difference]: Finished difference Result 277 states and 794 transitions. [2021-03-10 21:58:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 21:58:56,855 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:58:56,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 21:58:56,856 INFO L225 Difference]: With dead ends: 277 [2021-03-10 21:58:56,856 INFO L226 Difference]: Without dead ends: 273 [2021-03-10 21:58:56,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 5769.1ms TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-03-10 21:58:56,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-03-10 21:58:56,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 190. [2021-03-10 21:58:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.9523809523809526) internal successors, (558), 189 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:58:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 558 transitions. [2021-03-10 21:58:56,858 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 558 transitions. Word has length 17 [2021-03-10 21:58:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 21:58:56,859 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 558 transitions. [2021-03-10 21:58:56,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 21:58:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 558 transitions. [2021-03-10 21:58:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-10 21:58:56,859 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 21:58:56,859 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 21:58:57,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3279,129 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:58:57,059 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 21:58:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 21:58:57,060 INFO L82 PathProgramCache]: Analyzing trace with hash 692518350, now seen corresponding path program 94 times [2021-03-10 21:58:57,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 21:58:57,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296593773] [2021-03-10 21:58:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 21:58:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 21:58:57,314 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 21 [2021-03-10 21:58:57,539 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-10 21:58:58,034 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 21:58:58,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296593773] [2021-03-10 21:58:58,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530035415] [2021-03-10 21:58:58,034 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 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:58:58,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 21:58:58,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 21:58:58,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 21:58:58,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 21:58:58,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-03-10 21:58:58,475 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-10 21:58:58,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 21:58:58,490 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:58,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-03-10 21:58:58,506 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:58,516 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 17 treesize of output 13 [2021-03-10 21:58:58,521 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-10 21:58:58,723 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 21:58:58,724 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-10 21:58:58,727 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-03-10 21:58:58,727 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:143, output treesize:131 Received shutdown request... [2021-03-10 21:58:58,984 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-03-10 21:58:59,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3304,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 21:58:59,211 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 21:58:59,214 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 21:58:59,214 INFO L202 PluginConnector]: Adding new model array-int-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 09:58:59 BasicIcfg [2021-03-10 21:58:59,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 21:58:59,214 INFO L168 Benchmark]: Toolchain (without parser) took 837976.15 ms. Allocated memory was 255.9 MB in the beginning and 434.1 MB in the end (delta: 178.3 MB). Free memory was 236.6 MB in the beginning and 250.6 MB in the end (delta: -13.9 MB). Peak memory consumption was 163.6 MB. Max. memory is 16.0 GB. [2021-03-10 21:58:59,214 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 21:58:59,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.18 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 21:58:59,214 INFO L168 Benchmark]: Boogie Preprocessor took 17.55 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 21:58:59,214 INFO L168 Benchmark]: RCFGBuilder took 354.68 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 228.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.0 GB. [2021-03-10 21:58:59,214 INFO L168 Benchmark]: TraceAbstraction took 837575.07 ms. Allocated memory was 255.9 MB in the beginning and 434.1 MB in the end (delta: 178.3 MB). Free memory was 228.6 MB in the beginning and 250.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 155.5 MB. Max. memory is 16.0 GB. [2021-03-10 21:58:59,215 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 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.18 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.55 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 354.68 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 228.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 837575.07 ms. Allocated memory was 255.9 MB in the beginning and 434.1 MB in the end (delta: 178.3 MB). Free memory was 228.6 MB in the beginning and 250.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 155.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 92). Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 837514.7ms, OverallIterations: 135, TraceHistogramMax: 1, EmptinessCheckTime: 73.9ms, AutomataDifference: 347420.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3402 SDtfs, 7877 SDslu, 18129 SDs, 0 SdLazy, 47823 SolverSat, 730 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47265.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4034 GetRequests, 1509 SyntacticMatches, 231 SemanticMatches, 2294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5726 ImplicationChecksByTransitivity, 411036.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=132, InterpolantAutomatonStates: 1293, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 491.2ms AutomataMinimizationTime, 134 MinimizatonAttempts, 7856 StatesRemovedByMinimization, 133 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 544.2ms SsaConstructionTime, 1441.0ms SatisfiabilityAnalysisTime, 456758.5ms InterpolantComputationTime, 4300 NumberOfCodeBlocks, 4300 NumberOfCodeBlocksAsserted, 380 NumberOfCheckSat, 4038 ConstructedInterpolants, 253 QuantifiedInterpolants, 129815 SizeOfPredicates, 1405 NumberOfNonLiveVariables, 8672 ConjunctsInSsa, 2461 ConjunctsInUnsatCore, 262 InterpolantComputations, 6 PerfectInterpolantSequences, 4/632 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