/usr/bin/java -Xmx8000000000 -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-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/loop-lockstep-example.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 02:45:06,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 02:45:06,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 02:45:07,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 02:45:07,108 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-MCRwithDepranks-BasicCegarLoop.epf [2022-02-10 02:45:07,128 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 02:45:07,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 02:45:07,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 02:45:07,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 02:45:07,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 02:45:07,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 02:45:07,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 02:45:07,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 02:45:07,130 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 02:45:07,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 02:45:07,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 02:45:07,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 02:45:07,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 02:45:07,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 02:45:07,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 02:45:07,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 02:45:07,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 02:45:07,131 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 02:45:07,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 02:45:07,132 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 02:45:07,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 02:45:07,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 02:45:07,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 02:45:07,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 02:45:07,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 02:45:07,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:45:07,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 02:45:07,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 02:45:07,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 02:45:07,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 02:45:07,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 02:45:07,133 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 02:45:07,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 02:45:07,134 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 02:45:07,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 02:45:07,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 02:45:07,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 02:45:07,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 02:45:07,409 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 02:45:07,410 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 02:45:07,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/loop-lockstep-example.bpl [2022-02-10 02:45:07,412 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/loop-lockstep-example.bpl' [2022-02-10 02:45:07,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 02:45:07,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 02:45:07,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 02:45:07,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 02:45:07,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 02:45:07,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:45:07" (1/1) ... [2022-02-10 02:45:07,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:45:07" (1/1) ... [2022-02-10 02:45:07,454 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 02:45:07,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 02:45:07,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 02:45:07,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 02:45:07,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 02:45:07,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:45:07" (1/1) ... [2022-02-10 02:45:07,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:45:07" (1/1) ... [2022-02-10 02:45:07,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:45:07" (1/1) ... [2022-02-10 02:45:07,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:45:07" (1/1) ... [2022-02-10 02:45:07,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:45:07" (1/1) ... [2022-02-10 02:45:07,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:45:07" (1/1) ... [2022-02-10 02:45:07,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:45:07" (1/1) ... [2022-02-10 02:45:07,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 02:45:07,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 02:45:07,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 02:45:07,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 02:45:07,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:45:07" (1/1) ... [2022-02-10 02:45:07,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:45:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:07,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 02:45:07,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 02:45:07,560 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-10 02:45:07,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 02:45:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 02:45:07,561 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-10 02:45:07,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 02:45:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 02:45:07,561 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 02:45:07,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 02:45:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 02:45:07,562 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 02:45:07,601 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 02:45:07,602 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 02:45:07,719 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 02:45:07,725 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 02:45:07,726 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 02:45:07,727 INFO L202 PluginConnector]: Adding new model loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:45:07 BoogieIcfgContainer [2022-02-10 02:45:07,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 02:45:07,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 02:45:07,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 02:45:07,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 02:45:07,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:45:07" (1/2) ... [2022-02-10 02:45:07,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e5a6c6 and model type loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:45:07, skipping insertion in model container [2022-02-10 02:45:07,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:45:07" (2/2) ... [2022-02-10 02:45:07,746 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-lockstep-example.bpl [2022-02-10 02:45:07,756 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 02:45:07,757 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 02:45:07,757 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 02:45:07,757 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 02:45:07,788 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,788 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,789 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,790 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,790 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,790 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,792 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,792 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,792 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,792 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,793 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,794 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,794 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,795 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,795 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,797 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,798 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,798 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,799 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,799 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,811 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,814 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_j not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 02:45:07,815 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 02:45:07,865 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 02:45:07,872 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 02:45:07,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 02:45:07,884 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2022-02-10 02:45:07,912 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 73 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 72 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:08,634 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 22084 transitions and produced 11129 states. [2022-02-10 02:45:08,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 11129 states, 8874 states have (on average 1.7280820374126662) internal successors, (15335), 11128 states have internal predecessors, (15335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:08,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-10 02:45:08,710 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:08,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:08,711 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:08,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:08,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1287242457, now seen corresponding path program 1 times [2022-02-10 02:45:08,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:08,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769408949] [2022-02-10 02:45:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:08,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:08,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:08,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769408949] [2022-02-10 02:45:08,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769408949] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:45:08,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:45:08,885 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-02-10 02:45:08,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771556274] [2022-02-10 02:45:08,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:45:08,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 02:45:08,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:08,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 02:45:08,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 02:45:09,068 INFO L87 Difference]: Start difference. First operand has 11129 states, 8874 states have (on average 1.7280820374126662) internal successors, (15335), 11128 states have internal predecessors, (15335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:09,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:09,326 INFO L93 Difference]: Finished difference Result 11128 states and 15333 transitions. [2022-02-10 02:45:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 02:45:09,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-02-10 02:45:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:09,374 INFO L225 Difference]: With dead ends: 11128 [2022-02-10 02:45:09,374 INFO L226 Difference]: Without dead ends: 6758 [2022-02-10 02:45:09,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 02:45:09,423 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:09,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:09,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6758 states. [2022-02-10 02:45:09,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6758 to 57. [2022-02-10 02:45:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 56 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:09,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2022-02-10 02:45:09,649 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 12 [2022-02-10 02:45:09,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:09,650 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2022-02-10 02:45:09,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:09,650 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2022-02-10 02:45:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:45:09,654 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:09,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:09,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 02:45:09,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:09,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:09,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1258213229, now seen corresponding path program 1 times [2022-02-10 02:45:09,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:09,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516073991] [2022-02-10 02:45:09,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:09,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:09,745 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:09,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516073991] [2022-02-10 02:45:09,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516073991] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:45:09,746 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:45:09,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:45:09,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565098557] [2022-02-10 02:45:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:45:09,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:45:09,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:45:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:45:09,750 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:09,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:09,849 INFO L93 Difference]: Finished difference Result 99 states and 137 transitions. [2022-02-10 02:45:09,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:09,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-10 02:45:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:09,850 INFO L225 Difference]: With dead ends: 99 [2022-02-10 02:45:09,850 INFO L226 Difference]: Without dead ends: 96 [2022-02-10 02:45:09,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:45:09,852 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 48 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:09,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 66 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-02-10 02:45:09,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 54. [2022-02-10 02:45:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 53 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:09,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 76 transitions. [2022-02-10 02:45:09,857 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 76 transitions. Word has length 15 [2022-02-10 02:45:09,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:09,857 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 76 transitions. [2022-02-10 02:45:09,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:09,857 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 76 transitions. [2022-02-10 02:45:09,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:45:09,858 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:09,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:09,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 02:45:09,859 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:09,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:09,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1819692073, now seen corresponding path program 2 times [2022-02-10 02:45:09,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:09,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142824617] [2022-02-10 02:45:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:09,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:09,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:09,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142824617] [2022-02-10 02:45:09,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142824617] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:09,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245927465] [2022-02-10 02:45:09,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:09,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:09,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:09,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:09,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 02:45:09,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:09,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:09,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 02:45:09,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:10,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:10,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245927465] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:10,143 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:10,143 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-10 02:45:10,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311071853] [2022-02-10 02:45:10,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:10,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 02:45:10,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 02:45:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:10,146 INFO L87 Difference]: Start difference. First operand 54 states and 76 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-02-10 02:45:10,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:10,231 INFO L93 Difference]: Finished difference Result 95 states and 131 transitions. [2022-02-10 02:45:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:45:10,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 [2022-02-10 02:45:10,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:10,232 INFO L225 Difference]: With dead ends: 95 [2022-02-10 02:45:10,232 INFO L226 Difference]: Without dead ends: 95 [2022-02-10 02:45:10,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:45:10,235 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:10,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 59 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:10,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-02-10 02:45:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 56. [2022-02-10 02:45:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 55 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2022-02-10 02:45:10,246 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 15 [2022-02-10 02:45:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:10,247 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2022-02-10 02:45:10,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-02-10 02:45:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2022-02-10 02:45:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:45:10,248 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:10,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:10,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:10,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:10,477 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:10,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1624835765, now seen corresponding path program 1 times [2022-02-10 02:45:10,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:10,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22174883] [2022-02-10 02:45:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:10,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:10,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:10,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22174883] [2022-02-10 02:45:10,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22174883] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:10,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680231309] [2022-02-10 02:45:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:10,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:10,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:10,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:10,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 02:45:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:10,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 02:45:10,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:10,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:10,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680231309] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:10,685 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:10,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-10 02:45:10,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785498183] [2022-02-10 02:45:10,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:10,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 02:45:10,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:10,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 02:45:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:45:10,697 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2022-02-10 02:45:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:10,794 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2022-02-10 02:45:10,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:10,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:45:10,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:10,809 INFO L225 Difference]: With dead ends: 83 [2022-02-10 02:45:10,809 INFO L226 Difference]: Without dead ends: 83 [2022-02-10 02:45:10,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:45:10,810 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 44 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:10,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 44 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-02-10 02:45:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 58. [2022-02-10 02:45:10,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2022-02-10 02:45:10,814 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 18 [2022-02-10 02:45:10,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:10,815 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2022-02-10 02:45:10,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2022-02-10 02:45:10,815 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2022-02-10 02:45:10,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 02:45:10,815 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:10,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:10,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:11,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-10 02:45:11,017 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:11,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:11,017 INFO L85 PathProgramCache]: Analyzing trace with hash 38226123, now seen corresponding path program 2 times [2022-02-10 02:45:11,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:11,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801680832] [2022-02-10 02:45:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:11,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:11,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:11,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801680832] [2022-02-10 02:45:11,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801680832] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:45:11,051 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:45:11,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:45:11,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360936852] [2022-02-10 02:45:11,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:45:11,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:45:11,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:45:11,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:45:11,053 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2022-02-10 02:45:11,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:11,095 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2022-02-10 02:45:11,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:45:11,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-10 02:45:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:11,096 INFO L225 Difference]: With dead ends: 87 [2022-02-10 02:45:11,096 INFO L226 Difference]: Without dead ends: 86 [2022-02-10 02:45:11,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:45:11,097 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:11,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 40 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-02-10 02:45:11,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 59. [2022-02-10 02:45:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 58 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2022-02-10 02:45:11,100 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 18 [2022-02-10 02:45:11,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:11,100 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2022-02-10 02:45:11,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2022-02-10 02:45:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2022-02-10 02:45:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:45:11,101 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:11,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:11,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 02:45:11,101 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:11,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:11,102 INFO L85 PathProgramCache]: Analyzing trace with hash 312955375, now seen corresponding path program 1 times [2022-02-10 02:45:11,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:11,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289919058] [2022-02-10 02:45:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:11,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:11,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:11,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289919058] [2022-02-10 02:45:11,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289919058] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:11,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819189454] [2022-02-10 02:45:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:11,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:11,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:11,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:11,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 02:45:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:11,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:45:11,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:11,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:11,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819189454] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:11,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:11,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 02:45:11,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223987502] [2022-02-10 02:45:11,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:11,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 02:45:11,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:11,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 02:45:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:11,522 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 02:45:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:11,577 INFO L93 Difference]: Finished difference Result 127 states and 178 transitions. [2022-02-10 02:45:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:11,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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 21 [2022-02-10 02:45:11,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:11,579 INFO L225 Difference]: With dead ends: 127 [2022-02-10 02:45:11,579 INFO L226 Difference]: Without dead ends: 122 [2022-02-10 02:45:11,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:11,580 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:11,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 154 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-02-10 02:45:11,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2022-02-10 02:45:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.53125) internal successors, (147), 96 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 147 transitions. [2022-02-10 02:45:11,585 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 147 transitions. Word has length 21 [2022-02-10 02:45:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:11,585 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 147 transitions. [2022-02-10 02:45:11,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 02:45:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 147 transitions. [2022-02-10 02:45:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:45:11,586 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:11,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:11,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:11,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:11,800 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1851340245, now seen corresponding path program 2 times [2022-02-10 02:45:11,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:11,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129139354] [2022-02-10 02:45:11,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:11,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:11,888 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:11,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129139354] [2022-02-10 02:45:11,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129139354] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:11,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163641382] [2022-02-10 02:45:11,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:11,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:11,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:11,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:11,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 02:45:11,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:11,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:11,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:45:11,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:12,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:12,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163641382] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:12,203 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:12,203 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 02:45:12,203 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447621554] [2022-02-10 02:45:12,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:12,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 02:45:12,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:12,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 02:45:12,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:12,205 INFO L87 Difference]: Start difference. First operand 97 states and 147 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 02:45:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:12,262 INFO L93 Difference]: Finished difference Result 139 states and 208 transitions. [2022-02-10 02:45:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:12,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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 21 [2022-02-10 02:45:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:12,264 INFO L225 Difference]: With dead ends: 139 [2022-02-10 02:45:12,264 INFO L226 Difference]: Without dead ends: 134 [2022-02-10 02:45:12,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:12,265 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:12,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 139 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:12,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-10 02:45:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2022-02-10 02:45:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.5948275862068966) internal successors, (185), 116 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 185 transitions. [2022-02-10 02:45:12,270 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 185 transitions. Word has length 21 [2022-02-10 02:45:12,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:12,270 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 185 transitions. [2022-02-10 02:45:12,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 02:45:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 185 transitions. [2022-02-10 02:45:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:45:12,271 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:12,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:12,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:12,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:12,488 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:12,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:12,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1803766933, now seen corresponding path program 3 times [2022-02-10 02:45:12,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:12,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630885390] [2022-02-10 02:45:12,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:12,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:12,569 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:12,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630885390] [2022-02-10 02:45:12,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630885390] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:12,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343092906] [2022-02-10 02:45:12,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:12,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:12,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:12,571 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:12,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 02:45:12,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:45:12,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:12,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:45:12,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:12,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:12,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343092906] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:12,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:12,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 02:45:12,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683941241] [2022-02-10 02:45:12,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:12,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 02:45:12,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:12,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 02:45:12,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:12,786 INFO L87 Difference]: Start difference. First operand 117 states and 185 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 02:45:12,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:12,839 INFO L93 Difference]: Finished difference Result 153 states and 235 transitions. [2022-02-10 02:45:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:12,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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 21 [2022-02-10 02:45:12,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:12,840 INFO L225 Difference]: With dead ends: 153 [2022-02-10 02:45:12,840 INFO L226 Difference]: Without dead ends: 148 [2022-02-10 02:45:12,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:12,841 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:12,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 135 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:12,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-02-10 02:45:12,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 131. [2022-02-10 02:45:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.6307692307692307) internal successors, (212), 130 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 212 transitions. [2022-02-10 02:45:12,853 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 212 transitions. Word has length 21 [2022-02-10 02:45:12,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:12,853 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 212 transitions. [2022-02-10 02:45:12,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 02:45:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 212 transitions. [2022-02-10 02:45:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:45:12,854 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:12,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:12,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:13,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:13,072 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:13,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2064470665, now seen corresponding path program 4 times [2022-02-10 02:45:13,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:13,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283158311] [2022-02-10 02:45:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:13,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:13,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:13,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283158311] [2022-02-10 02:45:13,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283158311] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:13,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953377584] [2022-02-10 02:45:13,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:13,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:13,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:13,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:13,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 02:45:13,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:13,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:13,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 02:45:13,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:13,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:13,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953377584] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:13,351 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:13,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-02-10 02:45:13,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180990216] [2022-02-10 02:45:13,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:13,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 02:45:13,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:13,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 02:45:13,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:13,352 INFO L87 Difference]: Start difference. First operand 131 states and 212 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 02:45:13,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:13,399 INFO L93 Difference]: Finished difference Result 165 states and 259 transitions. [2022-02-10 02:45:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:13,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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 21 [2022-02-10 02:45:13,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:13,401 INFO L225 Difference]: With dead ends: 165 [2022-02-10 02:45:13,401 INFO L226 Difference]: Without dead ends: 160 [2022-02-10 02:45:13,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:13,402 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:13,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 131 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:13,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-02-10 02:45:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 144. [2022-02-10 02:45:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.6573426573426573) internal successors, (237), 143 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 237 transitions. [2022-02-10 02:45:13,407 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 237 transitions. Word has length 21 [2022-02-10 02:45:13,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:13,407 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 237 transitions. [2022-02-10 02:45:13,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 02:45:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 237 transitions. [2022-02-10 02:45:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:45:13,408 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:13,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:13,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:13,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:13,633 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:13,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1990614105, now seen corresponding path program 5 times [2022-02-10 02:45:13,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:13,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238184439] [2022-02-10 02:45:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:13,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:45:13,711 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:13,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238184439] [2022-02-10 02:45:13,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238184439] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:45:13,712 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:45:13,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 02:45:13,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351126373] [2022-02-10 02:45:13,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:45:13,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 02:45:13,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:13,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 02:45:13,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:13,715 INFO L87 Difference]: Start difference. First operand 144 states and 237 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 02:45:13,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:13,771 INFO L93 Difference]: Finished difference Result 204 states and 319 transitions. [2022-02-10 02:45:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:45:13,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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 21 [2022-02-10 02:45:13,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:13,773 INFO L225 Difference]: With dead ends: 204 [2022-02-10 02:45:13,773 INFO L226 Difference]: Without dead ends: 199 [2022-02-10 02:45:13,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:45:13,774 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 16 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:13,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 143 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:13,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-02-10 02:45:13,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 174. [2022-02-10 02:45:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.6647398843930636) internal successors, (288), 173 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 288 transitions. [2022-02-10 02:45:13,781 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 288 transitions. Word has length 21 [2022-02-10 02:45:13,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:13,781 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 288 transitions. [2022-02-10 02:45:13,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2022-02-10 02:45:13,782 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 288 transitions. [2022-02-10 02:45:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:45:13,783 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:13,784 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:13,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-10 02:45:13,784 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:13,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:13,784 INFO L85 PathProgramCache]: Analyzing trace with hash 393381579, now seen corresponding path program 6 times [2022-02-10 02:45:13,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:13,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7720202] [2022-02-10 02:45:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:13,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:13,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:13,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7720202] [2022-02-10 02:45:13,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7720202] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:13,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832528063] [2022-02-10 02:45:13,842 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:13,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:13,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:13,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:13,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 02:45:13,875 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:45:13,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:13,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:45:13,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:13,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:13,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832528063] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:13,992 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:13,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-10 02:45:13,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371521730] [2022-02-10 02:45:13,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:13,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:45:13,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:13,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:45:13,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:45:13,994 INFO L87 Difference]: Start difference. First operand 174 states and 288 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2022-02-10 02:45:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:14,081 INFO L93 Difference]: Finished difference Result 368 states and 592 transitions. [2022-02-10 02:45:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:45:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 24 [2022-02-10 02:45:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:14,083 INFO L225 Difference]: With dead ends: 368 [2022-02-10 02:45:14,083 INFO L226 Difference]: Without dead ends: 362 [2022-02-10 02:45:14,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:14,084 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 98 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:14,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 102 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:45:14,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-02-10 02:45:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 171. [2022-02-10 02:45:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.6705882352941177) internal successors, (284), 170 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 284 transitions. [2022-02-10 02:45:14,104 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 284 transitions. Word has length 24 [2022-02-10 02:45:14,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:14,104 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 284 transitions. [2022-02-10 02:45:14,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2022-02-10 02:45:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 284 transitions. [2022-02-10 02:45:14,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:45:14,105 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:14,105 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:14,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-02-10 02:45:14,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:14,320 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1964844981, now seen corresponding path program 7 times [2022-02-10 02:45:14,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:14,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868671339] [2022-02-10 02:45:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:14,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:14,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:14,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868671339] [2022-02-10 02:45:14,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868671339] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:14,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107768034] [2022-02-10 02:45:14,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:14,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:14,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:14,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:14,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 02:45:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:14,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:45:14,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:14,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:14,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107768034] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:14,547 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:14,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:45:14,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138112478] [2022-02-10 02:45:14,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:14,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:45:14,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:14,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:45:14,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:45:14,549 INFO L87 Difference]: Start difference. First operand 171 states and 284 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:14,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:14,750 INFO L93 Difference]: Finished difference Result 517 states and 796 transitions. [2022-02-10 02:45:14,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:45:14,750 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:45:14,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:14,752 INFO L225 Difference]: With dead ends: 517 [2022-02-10 02:45:14,752 INFO L226 Difference]: Without dead ends: 517 [2022-02-10 02:45:14,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:45:14,753 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 181 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:14,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 128 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:14,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-02-10 02:45:14,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 299. [2022-02-10 02:45:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.6610738255033557) internal successors, (495), 298 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) [2022-02-10 02:45:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 495 transitions. [2022-02-10 02:45:14,761 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 495 transitions. Word has length 24 [2022-02-10 02:45:14,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:14,761 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 495 transitions. [2022-02-10 02:45:14,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:14,762 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 495 transitions. [2022-02-10 02:45:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-10 02:45:14,762 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:14,762 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:14,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:14,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-02-10 02:45:14,987 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash 677214987, now seen corresponding path program 8 times [2022-02-10 02:45:14,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:14,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101469359] [2022-02-10 02:45:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:14,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:15,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101469359] [2022-02-10 02:45:15,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101469359] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:15,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364226224] [2022-02-10 02:45:15,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:15,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:15,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:15,032 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:15,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 02:45:15,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:15,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:15,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:45:15,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364226224] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:15,182 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:15,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:45:15,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941965474] [2022-02-10 02:45:15,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:15,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:45:15,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:45:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:45:15,183 INFO L87 Difference]: Start difference. First operand 299 states and 495 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:15,282 INFO L93 Difference]: Finished difference Result 434 states and 710 transitions. [2022-02-10 02:45:15,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:45:15,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-10 02:45:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:15,284 INFO L225 Difference]: With dead ends: 434 [2022-02-10 02:45:15,284 INFO L226 Difference]: Without dead ends: 429 [2022-02-10 02:45:15,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:15,285 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 79 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:15,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 120 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-02-10 02:45:15,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 309. [2022-02-10 02:45:15,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.655844155844156) internal successors, (510), 308 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) [2022-02-10 02:45:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 510 transitions. [2022-02-10 02:45:15,292 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 510 transitions. Word has length 24 [2022-02-10 02:45:15,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:15,292 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 510 transitions. [2022-02-10 02:45:15,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 510 transitions. [2022-02-10 02:45:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:15,293 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:15,293 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:15,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:15,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-10 02:45:15,510 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:15,511 INFO L85 PathProgramCache]: Analyzing trace with hash -869401013, now seen corresponding path program 9 times [2022-02-10 02:45:15,511 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:15,511 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50901293] [2022-02-10 02:45:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:15,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:15,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50901293] [2022-02-10 02:45:15,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50901293] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:15,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306441881] [2022-02-10 02:45:15,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:15,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:15,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:15,563 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:15,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 02:45:15,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:45:15,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:15,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:45:15,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:15,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:15,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306441881] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:15,726 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:15,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-02-10 02:45:15,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772319114] [2022-02-10 02:45:15,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:15,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:45:15,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:45:15,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:45:15,728 INFO L87 Difference]: Start difference. First operand 309 states and 510 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:15,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:15,836 INFO L93 Difference]: Finished difference Result 436 states and 705 transitions. [2022-02-10 02:45:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:45:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:15,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:15,838 INFO L225 Difference]: With dead ends: 436 [2022-02-10 02:45:15,838 INFO L226 Difference]: Without dead ends: 436 [2022-02-10 02:45:15,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:15,839 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 66 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:15,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 133 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:15,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-02-10 02:45:15,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 345. [2022-02-10 02:45:15,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.6511627906976745) internal successors, (568), 344 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 568 transitions. [2022-02-10 02:45:15,847 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 568 transitions. Word has length 27 [2022-02-10 02:45:15,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:15,847 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 568 transitions. [2022-02-10 02:45:15,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:15,847 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 568 transitions. [2022-02-10 02:45:15,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:15,848 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:15,848 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:15,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:16,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-10 02:45:16,072 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:16,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash 820010967, now seen corresponding path program 10 times [2022-02-10 02:45:16,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:16,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070913779] [2022-02-10 02:45:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:16,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:16,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:16,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070913779] [2022-02-10 02:45:16,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070913779] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:16,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35659400] [2022-02-10 02:45:16,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:16,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:16,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:16,118 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:16,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 02:45:16,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:16,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:16,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:45:16,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:16,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:16,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35659400] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:16,272 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:16,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:45:16,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599193634] [2022-02-10 02:45:16,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:16,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:45:16,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:16,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:45:16,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:45:16,273 INFO L87 Difference]: Start difference. First operand 345 states and 568 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:16,430 INFO L93 Difference]: Finished difference Result 621 states and 997 transitions. [2022-02-10 02:45:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:45:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:16,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:16,433 INFO L225 Difference]: With dead ends: 621 [2022-02-10 02:45:16,433 INFO L226 Difference]: Without dead ends: 619 [2022-02-10 02:45:16,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:45:16,434 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 112 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:16,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 148 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-02-10 02:45:16,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 432. [2022-02-10 02:45:16,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.6612529002320187) internal successors, (716), 431 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 716 transitions. [2022-02-10 02:45:16,446 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 716 transitions. Word has length 27 [2022-02-10 02:45:16,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:16,446 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 716 transitions. [2022-02-10 02:45:16,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:16,446 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 716 transitions. [2022-02-10 02:45:16,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:16,449 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:16,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:16,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:16,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 02:45:16,671 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:16,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2130026079, now seen corresponding path program 11 times [2022-02-10 02:45:16,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:16,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862354777] [2022-02-10 02:45:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:16,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:16,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:16,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862354777] [2022-02-10 02:45:16,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862354777] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:16,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240592537] [2022-02-10 02:45:16,715 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:16,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:16,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:16,717 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:16,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 02:45:16,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:45:16,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:16,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:45:16,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:16,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:16,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240592537] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:16,920 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:16,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-10 02:45:16,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160082103] [2022-02-10 02:45:16,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:16,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:45:16,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:16,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:45:16,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:45:16,922 INFO L87 Difference]: Start difference. First operand 432 states and 716 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:17,072 INFO L93 Difference]: Finished difference Result 594 states and 959 transitions. [2022-02-10 02:45:17,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:45:17,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:17,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:17,075 INFO L225 Difference]: With dead ends: 594 [2022-02-10 02:45:17,075 INFO L226 Difference]: Without dead ends: 594 [2022-02-10 02:45:17,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:45:17,076 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 82 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:17,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 171 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:17,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-02-10 02:45:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 518. [2022-02-10 02:45:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.6827852998065764) internal successors, (870), 517 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 870 transitions. [2022-02-10 02:45:17,092 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 870 transitions. Word has length 27 [2022-02-10 02:45:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:17,092 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 870 transitions. [2022-02-10 02:45:17,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 870 transitions. [2022-02-10 02:45:17,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:17,093 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:17,093 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:17,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:17,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-10 02:45:17,321 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:17,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:17,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1287444551, now seen corresponding path program 12 times [2022-02-10 02:45:17,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:17,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398030706] [2022-02-10 02:45:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:17,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:17,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:17,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398030706] [2022-02-10 02:45:17,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398030706] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:17,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808214429] [2022-02-10 02:45:17,368 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:17,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:17,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:17,370 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:17,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 02:45:17,397 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:45:17,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:17,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:45:17,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:17,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:17,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808214429] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:17,574 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:17,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-10 02:45:17,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661234005] [2022-02-10 02:45:17,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:17,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:17,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:17,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:17,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:17,576 INFO L87 Difference]: Start difference. First operand 518 states and 870 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:17,807 INFO L93 Difference]: Finished difference Result 905 states and 1498 transitions. [2022-02-10 02:45:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:45:17,807 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:17,811 INFO L225 Difference]: With dead ends: 905 [2022-02-10 02:45:17,811 INFO L226 Difference]: Without dead ends: 905 [2022-02-10 02:45:17,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:45:17,812 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 92 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:17,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 196 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:17,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-02-10 02:45:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 576. [2022-02-10 02:45:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 1.6817391304347826) internal successors, (967), 575 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 967 transitions. [2022-02-10 02:45:17,827 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 967 transitions. Word has length 27 [2022-02-10 02:45:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:17,827 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 967 transitions. [2022-02-10 02:45:17,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:17,827 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 967 transitions. [2022-02-10 02:45:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 02:45:17,828 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:17,829 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:17,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:18,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-10 02:45:18,044 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:18,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:18,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1013737503, now seen corresponding path program 13 times [2022-02-10 02:45:18,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:18,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928463529] [2022-02-10 02:45:18,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:18,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:18,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:18,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928463529] [2022-02-10 02:45:18,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928463529] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:18,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412306301] [2022-02-10 02:45:18,084 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:18,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:18,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:18,092 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:18,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 02:45:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:18,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 02:45:18,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:18,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:18,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412306301] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:18,264 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:18,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-10 02:45:18,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905801192] [2022-02-10 02:45:18,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:18,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:18,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:18,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:18,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:18,265 INFO L87 Difference]: Start difference. First operand 576 states and 967 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:18,413 INFO L93 Difference]: Finished difference Result 1075 states and 1779 transitions. [2022-02-10 02:45:18,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:45:18,413 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-10 02:45:18,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:18,417 INFO L225 Difference]: With dead ends: 1075 [2022-02-10 02:45:18,417 INFO L226 Difference]: Without dead ends: 1061 [2022-02-10 02:45:18,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:45:18,418 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 128 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:18,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 116 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-02-10 02:45:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 701. [2022-02-10 02:45:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.6857142857142857) internal successors, (1180), 700 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:18,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1180 transitions. [2022-02-10 02:45:18,435 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1180 transitions. Word has length 27 [2022-02-10 02:45:18,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:18,435 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 1180 transitions. [2022-02-10 02:45:18,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:18,435 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1180 transitions. [2022-02-10 02:45:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:18,436 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:18,436 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:18,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:18,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:18,659 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:18,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:18,660 INFO L85 PathProgramCache]: Analyzing trace with hash -158978833, now seen corresponding path program 14 times [2022-02-10 02:45:18,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:18,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257321707] [2022-02-10 02:45:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:18,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:18,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:18,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257321707] [2022-02-10 02:45:18,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257321707] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:18,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969254620] [2022-02-10 02:45:18,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:18,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:18,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:18,768 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:18,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 02:45:18,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:18,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:18,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:45:18,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:18,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:19,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969254620] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:19,014 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:19,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 02:45:19,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38553065] [2022-02-10 02:45:19,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:19,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:19,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:19,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:19,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:19,016 INFO L87 Difference]: Start difference. First operand 701 states and 1180 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:19,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:19,141 INFO L93 Difference]: Finished difference Result 972 states and 1592 transitions. [2022-02-10 02:45:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:45:19,141 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 30 [2022-02-10 02:45:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:19,145 INFO L225 Difference]: With dead ends: 972 [2022-02-10 02:45:19,145 INFO L226 Difference]: Without dead ends: 967 [2022-02-10 02:45:19,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:19,146 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 37 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:19,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 430 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:19,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-02-10 02:45:19,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 838. [2022-02-10 02:45:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.6750298685782556) internal successors, (1402), 837 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1402 transitions. [2022-02-10 02:45:19,165 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1402 transitions. Word has length 30 [2022-02-10 02:45:19,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:19,165 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1402 transitions. [2022-02-10 02:45:19,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1402 transitions. [2022-02-10 02:45:19,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:19,167 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:19,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:19,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:19,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:19,391 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:19,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:19,391 INFO L85 PathProgramCache]: Analyzing trace with hash -648296977, now seen corresponding path program 15 times [2022-02-10 02:45:19,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:19,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047671569] [2022-02-10 02:45:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:19,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:19,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:19,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047671569] [2022-02-10 02:45:19,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047671569] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:19,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794569536] [2022-02-10 02:45:19,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:19,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:19,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:19,528 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:19,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 02:45:19,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:45:19,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:19,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:45:19,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:19,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:19,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794569536] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:19,808 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:19,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 02:45:19,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241366821] [2022-02-10 02:45:19,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:19,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:19,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:19,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:19,809 INFO L87 Difference]: Start difference. First operand 838 states and 1402 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:19,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:19,943 INFO L93 Difference]: Finished difference Result 1137 states and 1876 transitions. [2022-02-10 02:45:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:45:19,944 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 30 [2022-02-10 02:45:19,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:19,948 INFO L225 Difference]: With dead ends: 1137 [2022-02-10 02:45:19,949 INFO L226 Difference]: Without dead ends: 1131 [2022-02-10 02:45:19,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:19,949 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 28 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:19,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 395 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:19,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-02-10 02:45:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1050. [2022-02-10 02:45:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1049 states have (on average 1.6892278360343185) internal successors, (1772), 1049 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1772 transitions. [2022-02-10 02:45:19,977 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1772 transitions. Word has length 30 [2022-02-10 02:45:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:19,977 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1772 transitions. [2022-02-10 02:45:19,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1772 transitions. [2022-02-10 02:45:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:19,979 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:19,979 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:20,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:20,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:20,195 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash -61299259, now seen corresponding path program 16 times [2022-02-10 02:45:20,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:20,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824085462] [2022-02-10 02:45:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:20,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:20,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:20,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824085462] [2022-02-10 02:45:20,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824085462] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:20,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992687317] [2022-02-10 02:45:20,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:20,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:20,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:20,300 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:20,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 02:45:20,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:20,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:20,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:45:20,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:20,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:20,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992687317] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:20,566 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:20,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 02:45:20,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739711694] [2022-02-10 02:45:20,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:20,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:20,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:20,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:20,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:20,567 INFO L87 Difference]: Start difference. First operand 1050 states and 1772 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:20,674 INFO L93 Difference]: Finished difference Result 1471 states and 2466 transitions. [2022-02-10 02:45:20,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:45:20,675 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 30 [2022-02-10 02:45:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:20,687 INFO L225 Difference]: With dead ends: 1471 [2022-02-10 02:45:20,687 INFO L226 Difference]: Without dead ends: 1465 [2022-02-10 02:45:20,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:20,689 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:20,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 386 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2022-02-10 02:45:20,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1385. [2022-02-10 02:45:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1384 states have (on average 1.7080924855491328) internal successors, (2364), 1384 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 2364 transitions. [2022-02-10 02:45:20,738 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 2364 transitions. Word has length 30 [2022-02-10 02:45:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:20,739 INFO L470 AbstractCegarLoop]: Abstraction has 1385 states and 2364 transitions. [2022-02-10 02:45:20,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 2364 transitions. [2022-02-10 02:45:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:20,743 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:20,743 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:20,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-02-10 02:45:20,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:20,959 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:20,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash -170394257, now seen corresponding path program 17 times [2022-02-10 02:45:20,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:20,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204730627] [2022-02-10 02:45:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:20,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:21,067 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:21,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204730627] [2022-02-10 02:45:21,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204730627] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:21,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939329265] [2022-02-10 02:45:21,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:21,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:21,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:21,069 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:21,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 02:45:21,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:45:21,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:21,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:45:21,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:21,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:21,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939329265] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:21,321 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:21,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 02:45:21,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831309682] [2022-02-10 02:45:21,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:21,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:21,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:21,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:21,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:21,324 INFO L87 Difference]: Start difference. First operand 1385 states and 2364 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:21,436 INFO L93 Difference]: Finished difference Result 1905 states and 3239 transitions. [2022-02-10 02:45:21,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:45:21,437 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 30 [2022-02-10 02:45:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:21,445 INFO L225 Difference]: With dead ends: 1905 [2022-02-10 02:45:21,445 INFO L226 Difference]: Without dead ends: 1899 [2022-02-10 02:45:21,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:21,446 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 26 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:21,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 377 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-02-10 02:45:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1821. [2022-02-10 02:45:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 1.7252747252747254) internal successors, (3140), 1820 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 3140 transitions. [2022-02-10 02:45:21,488 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 3140 transitions. Word has length 30 [2022-02-10 02:45:21,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:21,488 INFO L470 AbstractCegarLoop]: Abstraction has 1821 states and 3140 transitions. [2022-02-10 02:45:21,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 3140 transitions. [2022-02-10 02:45:21,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:21,491 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:21,491 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:21,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:21,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:21,716 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:21,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:21,716 INFO L85 PathProgramCache]: Analyzing trace with hash -359509627, now seen corresponding path program 18 times [2022-02-10 02:45:21,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:21,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648335634] [2022-02-10 02:45:21,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:21,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:21,835 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:21,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648335634] [2022-02-10 02:45:21,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648335634] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:21,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263244709] [2022-02-10 02:45:21,835 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:21,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:21,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:21,840 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:21,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 02:45:21,870 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:45:21,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:21,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:45:21,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:21,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:22,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263244709] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:22,086 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:22,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 02:45:22,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796470351] [2022-02-10 02:45:22,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:22,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:22,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:22,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:22,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:22,088 INFO L87 Difference]: Start difference. First operand 1821 states and 3140 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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) [2022-02-10 02:45:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:22,209 INFO L93 Difference]: Finished difference Result 2547 states and 4365 transitions. [2022-02-10 02:45:22,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:45:22,210 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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 30 [2022-02-10 02:45:22,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:22,220 INFO L225 Difference]: With dead ends: 2547 [2022-02-10 02:45:22,220 INFO L226 Difference]: Without dead ends: 2541 [2022-02-10 02:45:22,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:22,221 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 34 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:22,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 402 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2541 states. [2022-02-10 02:45:22,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2541 to 2366. [2022-02-10 02:45:22,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2365 states have (on average 1.7369978858350952) internal successors, (4108), 2365 states have internal predecessors, (4108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:22,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 4108 transitions. [2022-02-10 02:45:22,302 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 4108 transitions. Word has length 30 [2022-02-10 02:45:22,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:22,302 INFO L470 AbstractCegarLoop]: Abstraction has 2366 states and 4108 transitions. [2022-02-10 02:45:22,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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) [2022-02-10 02:45:22,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 4108 transitions. [2022-02-10 02:45:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:22,306 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:22,306 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:22,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:22,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:22,526 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:22,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:22,526 INFO L85 PathProgramCache]: Analyzing trace with hash -36939665, now seen corresponding path program 19 times [2022-02-10 02:45:22,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:22,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942984393] [2022-02-10 02:45:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:22,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:22,628 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:22,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942984393] [2022-02-10 02:45:22,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942984393] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:22,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787962781] [2022-02-10 02:45:22,629 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:22,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:22,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:22,630 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:22,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 02:45:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:22,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:45:22,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:22,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:22,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787962781] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:22,875 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:22,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 02:45:22,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669052163] [2022-02-10 02:45:22,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:22,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:22,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:22,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:22,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:22,876 INFO L87 Difference]: Start difference. First operand 2366 states and 4108 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:22,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:22,978 INFO L93 Difference]: Finished difference Result 2765 states and 4746 transitions. [2022-02-10 02:45:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:45:22,979 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 30 [2022-02-10 02:45:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:22,993 INFO L225 Difference]: With dead ends: 2765 [2022-02-10 02:45:22,993 INFO L226 Difference]: Without dead ends: 2753 [2022-02-10 02:45:22,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:22,994 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 24 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:22,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 358 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:22,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2022-02-10 02:45:23,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2682. [2022-02-10 02:45:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2681 states have (on average 1.7370384185005594) internal successors, (4657), 2681 states have internal predecessors, (4657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4657 transitions. [2022-02-10 02:45:23,059 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4657 transitions. Word has length 30 [2022-02-10 02:45:23,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:23,059 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 4657 transitions. [2022-02-10 02:45:23,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:23,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4657 transitions. [2022-02-10 02:45:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:23,064 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:23,064 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:23,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:23,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-02-10 02:45:23,273 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:23,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:23,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1176797243, now seen corresponding path program 20 times [2022-02-10 02:45:23,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:23,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576814351] [2022-02-10 02:45:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:23,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:23,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:23,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576814351] [2022-02-10 02:45:23,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576814351] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:23,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928831028] [2022-02-10 02:45:23,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:23,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:23,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:23,365 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:23,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 02:45:23,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:23,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:23,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:45:23,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:23,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:23,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928831028] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:23,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:23,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 02:45:23,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856908715] [2022-02-10 02:45:23,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:23,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:23,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:23,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:23,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:23,621 INFO L87 Difference]: Start difference. First operand 2682 states and 4657 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:23,738 INFO L93 Difference]: Finished difference Result 3164 states and 5448 transitions. [2022-02-10 02:45:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:45:23,738 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 30 [2022-02-10 02:45:23,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:23,754 INFO L225 Difference]: With dead ends: 3164 [2022-02-10 02:45:23,754 INFO L226 Difference]: Without dead ends: 3152 [2022-02-10 02:45:23,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:23,755 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 23 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:23,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 350 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:23,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2022-02-10 02:45:23,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 3083. [2022-02-10 02:45:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 3082 states have (on average 1.7394548994159638) internal successors, (5361), 3082 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 5361 transitions. [2022-02-10 02:45:23,817 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 5361 transitions. Word has length 30 [2022-02-10 02:45:23,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:23,818 INFO L470 AbstractCegarLoop]: Abstraction has 3083 states and 5361 transitions. [2022-02-10 02:45:23,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 5361 transitions. [2022-02-10 02:45:23,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:23,822 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:23,823 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:23,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:24,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-02-10 02:45:24,046 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:24,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:24,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1222578193, now seen corresponding path program 21 times [2022-02-10 02:45:24,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:24,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75661169] [2022-02-10 02:45:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:24,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:24,145 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:24,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75661169] [2022-02-10 02:45:24,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75661169] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:24,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194920594] [2022-02-10 02:45:24,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:24,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:24,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:24,147 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:24,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 02:45:24,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:45:24,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:24,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:45:24,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:24,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:24,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194920594] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:24,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:24,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 02:45:24,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997267454] [2022-02-10 02:45:24,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:24,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:24,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:24,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:24,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:24,384 INFO L87 Difference]: Start difference. First operand 3083 states and 5361 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:24,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:24,510 INFO L93 Difference]: Finished difference Result 3635 states and 6283 transitions. [2022-02-10 02:45:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:45:24,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 30 [2022-02-10 02:45:24,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:24,521 INFO L225 Difference]: With dead ends: 3635 [2022-02-10 02:45:24,521 INFO L226 Difference]: Without dead ends: 3623 [2022-02-10 02:45:24,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:24,522 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 22 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:24,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 342 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2022-02-10 02:45:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3556. [2022-02-10 02:45:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 1.7434599156118142) internal successors, (6198), 3555 states have internal predecessors, (6198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 6198 transitions. [2022-02-10 02:45:24,606 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 6198 transitions. Word has length 30 [2022-02-10 02:45:24,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:24,606 INFO L470 AbstractCegarLoop]: Abstraction has 3556 states and 6198 transitions. [2022-02-10 02:45:24,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2022-02-10 02:45:24,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 6198 transitions. [2022-02-10 02:45:24,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-10 02:45:24,612 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:24,612 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:24,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:24,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-02-10 02:45:24,837 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:24,837 INFO L85 PathProgramCache]: Analyzing trace with hash -812295291, now seen corresponding path program 22 times [2022-02-10 02:45:24,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:24,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097529607] [2022-02-10 02:45:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:24,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:24,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:24,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097529607] [2022-02-10 02:45:24,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097529607] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:24,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097252115] [2022-02-10 02:45:24,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:24,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:24,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:24,955 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:24,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 02:45:24,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:24,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:24,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 02:45:24,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:25,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:25,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097252115] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:25,213 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:25,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-02-10 02:45:25,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628251856] [2022-02-10 02:45:25,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:25,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:45:25,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:25,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:45:25,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:25,214 INFO L87 Difference]: Start difference. First operand 3556 states and 6198 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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) [2022-02-10 02:45:25,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:25,368 INFO L93 Difference]: Finished difference Result 4212 states and 7297 transitions. [2022-02-10 02:45:25,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 02:45:25,368 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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 30 [2022-02-10 02:45:25,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:25,379 INFO L225 Difference]: With dead ends: 4212 [2022-02-10 02:45:25,379 INFO L226 Difference]: Without dead ends: 4200 [2022-02-10 02:45:25,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:45:25,380 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 30 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:25,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 373 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:25,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2022-02-10 02:45:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 4125. [2022-02-10 02:45:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4124 states have (on average 1.7468477206595538) internal successors, (7204), 4124 states have internal predecessors, (7204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 7204 transitions. [2022-02-10 02:45:25,471 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 7204 transitions. Word has length 30 [2022-02-10 02:45:25,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:25,471 INFO L470 AbstractCegarLoop]: Abstraction has 4125 states and 7204 transitions. [2022-02-10 02:45:25,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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) [2022-02-10 02:45:25,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 7204 transitions. [2022-02-10 02:45:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:25,480 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:25,480 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:25,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:25,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:25,691 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:25,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:25,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1570649141, now seen corresponding path program 23 times [2022-02-10 02:45:25,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:25,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135871535] [2022-02-10 02:45:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:25,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:25,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:25,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135871535] [2022-02-10 02:45:25,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135871535] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:25,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17859915] [2022-02-10 02:45:25,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:25,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:25,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:25,745 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:25,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 02:45:25,767 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:45:25,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:25,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:25,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:25,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:25,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17859915] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:25,919 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:25,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 02:45:25,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006997229] [2022-02-10 02:45:25,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:25,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:45:25,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:25,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:45:25,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:45:25,921 INFO L87 Difference]: Start difference. First operand 4125 states and 7204 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:26,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:26,046 INFO L93 Difference]: Finished difference Result 6791 states and 11565 transitions. [2022-02-10 02:45:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:45:26,046 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:26,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:26,066 INFO L225 Difference]: With dead ends: 6791 [2022-02-10 02:45:26,066 INFO L226 Difference]: Without dead ends: 6782 [2022-02-10 02:45:26,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:45:26,067 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 85 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:26,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 142 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:26,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6782 states. [2022-02-10 02:45:26,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6782 to 4122. [2022-02-10 02:45:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 4121 states have (on average 1.7471487503033245) internal successors, (7200), 4121 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 7200 transitions. [2022-02-10 02:45:26,171 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 7200 transitions. Word has length 33 [2022-02-10 02:45:26,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:26,171 INFO L470 AbstractCegarLoop]: Abstraction has 4122 states and 7200 transitions. [2022-02-10 02:45:26,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:26,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 7200 transitions. [2022-02-10 02:45:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:26,180 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:26,180 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:26,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-10 02:45:26,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-10 02:45:26,395 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:26,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1632294287, now seen corresponding path program 24 times [2022-02-10 02:45:26,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:26,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565590893] [2022-02-10 02:45:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:26,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:26,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:26,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565590893] [2022-02-10 02:45:26,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565590893] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:26,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412010836] [2022-02-10 02:45:26,440 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:26,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:26,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:26,442 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:26,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 02:45:26,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:45:26,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:26,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:26,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:26,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:26,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412010836] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:26,679 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:26,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:45:26,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591394659] [2022-02-10 02:45:26,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:26,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:26,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:26,682 INFO L87 Difference]: Start difference. First operand 4122 states and 7200 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:27,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:27,085 INFO L93 Difference]: Finished difference Result 7843 states and 13199 transitions. [2022-02-10 02:45:27,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 02:45:27,085 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:27,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:27,104 INFO L225 Difference]: With dead ends: 7843 [2022-02-10 02:45:27,104 INFO L226 Difference]: Without dead ends: 7842 [2022-02-10 02:45:27,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=367, Invalid=823, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:45:27,105 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 248 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:27,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 264 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:27,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2022-02-10 02:45:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 4989. [2022-02-10 02:45:27,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4989 states, 4988 states have (on average 1.7201283079390537) internal successors, (8580), 4988 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4989 states to 4989 states and 8580 transitions. [2022-02-10 02:45:27,255 INFO L78 Accepts]: Start accepts. Automaton has 4989 states and 8580 transitions. Word has length 33 [2022-02-10 02:45:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:27,256 INFO L470 AbstractCegarLoop]: Abstraction has 4989 states and 8580 transitions. [2022-02-10 02:45:27,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 4989 states and 8580 transitions. [2022-02-10 02:45:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:27,265 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:27,265 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:27,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:27,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-10 02:45:27,484 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:27,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash -20613041, now seen corresponding path program 25 times [2022-02-10 02:45:27,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:27,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662180630] [2022-02-10 02:45:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:27,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:27,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:27,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662180630] [2022-02-10 02:45:27,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662180630] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:27,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073461806] [2022-02-10 02:45:27,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:27,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:27,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:27,537 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:27,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 02:45:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:27,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:27,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:27,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:27,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073461806] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:27,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:27,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:45:27,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381080467] [2022-02-10 02:45:27,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:27,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:27,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:27,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:27,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:27,742 INFO L87 Difference]: Start difference. First operand 4989 states and 8580 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:27,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:27,973 INFO L93 Difference]: Finished difference Result 8380 states and 14215 transitions. [2022-02-10 02:45:27,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:45:27,973 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:27,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:27,997 INFO L225 Difference]: With dead ends: 8380 [2022-02-10 02:45:27,997 INFO L226 Difference]: Without dead ends: 8371 [2022-02-10 02:45:27,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:45:27,999 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 217 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:27,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 201 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:28,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8371 states. [2022-02-10 02:45:28,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8371 to 5967. [2022-02-10 02:45:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5967 states, 5966 states have (on average 1.724606101240362) internal successors, (10289), 5966 states have internal predecessors, (10289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5967 states to 5967 states and 10289 transitions. [2022-02-10 02:45:28,144 INFO L78 Accepts]: Start accepts. Automaton has 5967 states and 10289 transitions. Word has length 33 [2022-02-10 02:45:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:28,145 INFO L470 AbstractCegarLoop]: Abstraction has 5967 states and 10289 transitions. [2022-02-10 02:45:28,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5967 states and 10289 transitions. [2022-02-10 02:45:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-10 02:45:28,153 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:28,153 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:28,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:28,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:28,378 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:28,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:28,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1614770059, now seen corresponding path program 26 times [2022-02-10 02:45:28,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:28,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032303088] [2022-02-10 02:45:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:28,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:28,427 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:28,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032303088] [2022-02-10 02:45:28,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032303088] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:28,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518724839] [2022-02-10 02:45:28,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:28,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:28,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:28,428 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:28,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 02:45:28,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:28,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:28,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:28,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:28,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:28,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518724839] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:28,625 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:28,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:45:28,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176683706] [2022-02-10 02:45:28,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:28,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:28,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:28,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:28,626 INFO L87 Difference]: Start difference. First operand 5967 states and 10289 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:28,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:28,792 INFO L93 Difference]: Finished difference Result 7546 states and 12725 transitions. [2022-02-10 02:45:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:45:28,793 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-10 02:45:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:28,810 INFO L225 Difference]: With dead ends: 7546 [2022-02-10 02:45:28,811 INFO L226 Difference]: Without dead ends: 7538 [2022-02-10 02:45:28,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:45:28,812 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 109 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:28,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 152 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:28,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7538 states. [2022-02-10 02:45:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7538 to 5985. [2022-02-10 02:45:28,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5985 states, 5984 states have (on average 1.7237633689839573) internal successors, (10315), 5984 states have internal predecessors, (10315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5985 states to 5985 states and 10315 transitions. [2022-02-10 02:45:28,935 INFO L78 Accepts]: Start accepts. Automaton has 5985 states and 10315 transitions. Word has length 33 [2022-02-10 02:45:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:28,936 INFO L470 AbstractCegarLoop]: Abstraction has 5985 states and 10315 transitions. [2022-02-10 02:45:28,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5985 states and 10315 transitions. [2022-02-10 02:45:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:28,945 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:28,945 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:28,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:29,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:29,167 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:29,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1239046125, now seen corresponding path program 27 times [2022-02-10 02:45:29,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:29,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660753671] [2022-02-10 02:45:29,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:29,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:29,212 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:29,212 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:29,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660753671] [2022-02-10 02:45:29,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660753671] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:29,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887628175] [2022-02-10 02:45:29,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:29,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:29,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:29,214 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:29,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 02:45:29,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:45:29,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:29,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:29,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:29,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:29,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887628175] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:29,401 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:29,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-10 02:45:29,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276053879] [2022-02-10 02:45:29,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:29,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:45:29,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:29,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:45:29,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:45:29,402 INFO L87 Difference]: Start difference. First operand 5985 states and 10315 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:29,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:29,586 INFO L93 Difference]: Finished difference Result 6632 states and 11362 transitions. [2022-02-10 02:45:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:45:29,586 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:29,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:29,602 INFO L225 Difference]: With dead ends: 6632 [2022-02-10 02:45:29,602 INFO L226 Difference]: Without dead ends: 6632 [2022-02-10 02:45:29,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:45:29,604 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 93 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:29,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 225 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:29,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6632 states. [2022-02-10 02:45:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6632 to 6068. [2022-02-10 02:45:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6068 states, 6067 states have (on average 1.7219383550354377) internal successors, (10447), 6067 states have internal predecessors, (10447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:29,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6068 states to 6068 states and 10447 transitions. [2022-02-10 02:45:29,718 INFO L78 Accepts]: Start accepts. Automaton has 6068 states and 10447 transitions. Word has length 36 [2022-02-10 02:45:29,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:29,718 INFO L470 AbstractCegarLoop]: Abstraction has 6068 states and 10447 transitions. [2022-02-10 02:45:29,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:29,718 INFO L276 IsEmpty]: Start isEmpty. Operand 6068 states and 10447 transitions. [2022-02-10 02:45:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:29,728 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:29,729 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:29,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:29,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:29,952 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:29,952 INFO L85 PathProgramCache]: Analyzing trace with hash -533058541, now seen corresponding path program 28 times [2022-02-10 02:45:29,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:29,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427669147] [2022-02-10 02:45:29,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:29,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:30,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:30,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427669147] [2022-02-10 02:45:30,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427669147] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:30,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759960924] [2022-02-10 02:45:30,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:30,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:30,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:30,005 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:30,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 02:45:30,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:30,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:30,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:30,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:30,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:30,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759960924] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:30,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:30,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:45:30,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831092246] [2022-02-10 02:45:30,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:30,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:30,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:30,206 INFO L87 Difference]: Start difference. First operand 6068 states and 10447 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:30,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:30,562 INFO L93 Difference]: Finished difference Result 6847 states and 11665 transitions. [2022-02-10 02:45:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 02:45:30,563 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:30,576 INFO L225 Difference]: With dead ends: 6847 [2022-02-10 02:45:30,576 INFO L226 Difference]: Without dead ends: 6845 [2022-02-10 02:45:30,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=389, Invalid=733, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:45:30,577 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 215 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:30,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 277 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2022-02-10 02:45:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 5569. [2022-02-10 02:45:30,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 5568 states have (on average 1.7097701149425288) internal successors, (9520), 5568 states have internal predecessors, (9520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 9520 transitions. [2022-02-10 02:45:30,681 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 9520 transitions. Word has length 36 [2022-02-10 02:45:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:30,681 INFO L470 AbstractCegarLoop]: Abstraction has 5569 states and 9520 transitions. [2022-02-10 02:45:30,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:30,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 9520 transitions. [2022-02-10 02:45:30,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:30,691 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:30,691 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:30,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:30,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:30,912 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:30,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:30,912 INFO L85 PathProgramCache]: Analyzing trace with hash 811871709, now seen corresponding path program 29 times [2022-02-10 02:45:30,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:30,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665916245] [2022-02-10 02:45:30,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:30,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:30,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:30,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665916245] [2022-02-10 02:45:30,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665916245] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:30,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939215049] [2022-02-10 02:45:30,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:30,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:30,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:30,961 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:30,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 02:45:30,990 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:45:30,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:30,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:30,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:31,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:31,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939215049] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:31,188 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:31,188 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-10 02:45:31,188 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63631991] [2022-02-10 02:45:31,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:31,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:31,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:31,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:31,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:31,190 INFO L87 Difference]: Start difference. First operand 5569 states and 9520 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:31,528 INFO L93 Difference]: Finished difference Result 6604 states and 11176 transitions. [2022-02-10 02:45:31,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 02:45:31,531 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:31,545 INFO L225 Difference]: With dead ends: 6604 [2022-02-10 02:45:31,545 INFO L226 Difference]: Without dead ends: 6604 [2022-02-10 02:45:31,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=391, Invalid=799, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:45:31,546 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 156 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:31,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 272 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2022-02-10 02:45:31,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 5872. [2022-02-10 02:45:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 5871 states have (on average 1.7089081928121275) internal successors, (10033), 5871 states have internal predecessors, (10033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 10033 transitions. [2022-02-10 02:45:31,679 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 10033 transitions. Word has length 36 [2022-02-10 02:45:31,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:31,679 INFO L470 AbstractCegarLoop]: Abstraction has 5872 states and 10033 transitions. [2022-02-10 02:45:31,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:31,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 10033 transitions. [2022-02-10 02:45:31,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:31,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:31,689 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:31,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:31,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-02-10 02:45:31,904 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:31,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:31,904 INFO L85 PathProgramCache]: Analyzing trace with hash 897301587, now seen corresponding path program 30 times [2022-02-10 02:45:31,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:31,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888336838] [2022-02-10 02:45:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:31,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:31,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:31,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888336838] [2022-02-10 02:45:31,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888336838] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:31,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432286640] [2022-02-10 02:45:31,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:31,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:31,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:31,950 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:31,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 02:45:31,979 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:45:31,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:31,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:31,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:32,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:32,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432286640] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:32,169 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:32,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2022-02-10 02:45:32,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590849056] [2022-02-10 02:45:32,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:32,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:45:32,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:32,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:45:32,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:45:32,170 INFO L87 Difference]: Start difference. First operand 5872 states and 10033 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:32,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:32,517 INFO L93 Difference]: Finished difference Result 8263 states and 14085 transitions. [2022-02-10 02:45:32,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 02:45:32,518 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:32,530 INFO L225 Difference]: With dead ends: 8263 [2022-02-10 02:45:32,530 INFO L226 Difference]: Without dead ends: 8263 [2022-02-10 02:45:32,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=353, Invalid=703, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:45:32,531 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 141 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:32,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 257 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:32,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8263 states. [2022-02-10 02:45:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8263 to 5650. [2022-02-10 02:45:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5650 states, 5649 states have (on average 1.7080899274207824) internal successors, (9649), 5649 states have internal predecessors, (9649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5650 states to 5650 states and 9649 transitions. [2022-02-10 02:45:32,631 INFO L78 Accepts]: Start accepts. Automaton has 5650 states and 9649 transitions. Word has length 36 [2022-02-10 02:45:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:32,631 INFO L470 AbstractCegarLoop]: Abstraction has 5650 states and 9649 transitions. [2022-02-10 02:45:32,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:32,632 INFO L276 IsEmpty]: Start isEmpty. Operand 5650 states and 9649 transitions. [2022-02-10 02:45:32,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:32,640 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:32,640 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:32,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:32,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:32,866 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:32,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1989050003, now seen corresponding path program 31 times [2022-02-10 02:45:32,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:32,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408745710] [2022-02-10 02:45:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:32,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:32,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:32,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408745710] [2022-02-10 02:45:32,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408745710] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:32,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739982582] [2022-02-10 02:45:32,913 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:32,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:32,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:32,915 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:32,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 02:45:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:32,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:32,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:33,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:33,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739982582] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:33,128 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:33,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-02-10 02:45:33,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493555043] [2022-02-10 02:45:33,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:33,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:45:33,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:33,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:45:33,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:45:33,129 INFO L87 Difference]: Start difference. First operand 5650 states and 9649 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:33,431 INFO L93 Difference]: Finished difference Result 8173 states and 13910 transitions. [2022-02-10 02:45:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 02:45:33,432 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:33,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:33,444 INFO L225 Difference]: With dead ends: 8173 [2022-02-10 02:45:33,444 INFO L226 Difference]: Without dead ends: 8158 [2022-02-10 02:45:33,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=373, Invalid=817, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:45:33,445 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 204 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:33,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 201 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8158 states. [2022-02-10 02:45:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8158 to 5156. [2022-02-10 02:45:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5156 states, 5155 states have (on average 1.6884578079534434) internal successors, (8704), 5155 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 8704 transitions. [2022-02-10 02:45:33,549 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 8704 transitions. Word has length 36 [2022-02-10 02:45:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:33,549 INFO L470 AbstractCegarLoop]: Abstraction has 5156 states and 8704 transitions. [2022-02-10 02:45:33,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 8704 transitions. [2022-02-10 02:45:33,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:33,557 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:33,557 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:33,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:33,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:33,783 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1241696147, now seen corresponding path program 32 times [2022-02-10 02:45:33,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:33,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814082220] [2022-02-10 02:45:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:33,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:33,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:33,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814082220] [2022-02-10 02:45:33,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814082220] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:33,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640310482] [2022-02-10 02:45:33,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:33,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:33,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:33,860 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:33,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 02:45:33,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:33,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:33,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:33,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:34,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:34,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640310482] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:34,113 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:34,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-02-10 02:45:34,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080309431] [2022-02-10 02:45:34,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:34,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:45:34,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:34,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:45:34,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:45:34,115 INFO L87 Difference]: Start difference. First operand 5156 states and 8704 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:34,533 INFO L93 Difference]: Finished difference Result 9377 states and 15765 transitions. [2022-02-10 02:45:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 02:45:34,533 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:34,547 INFO L225 Difference]: With dead ends: 9377 [2022-02-10 02:45:34,548 INFO L226 Difference]: Without dead ends: 9377 [2022-02-10 02:45:34,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=451, Invalid=955, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 02:45:34,549 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 168 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:34,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 298 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:34,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9377 states. [2022-02-10 02:45:34,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9377 to 6824. [2022-02-10 02:45:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6824 states, 6823 states have (on average 1.6901656162978163) internal successors, (11532), 6823 states have internal predecessors, (11532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 11532 transitions. [2022-02-10 02:45:34,701 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 11532 transitions. Word has length 36 [2022-02-10 02:45:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:34,701 INFO L470 AbstractCegarLoop]: Abstraction has 6824 states and 11532 transitions. [2022-02-10 02:45:34,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:34,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 11532 transitions. [2022-02-10 02:45:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-10 02:45:34,711 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:34,711 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:34,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:34,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-02-10 02:45:34,936 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:34,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:34,936 INFO L85 PathProgramCache]: Analyzing trace with hash 804974867, now seen corresponding path program 33 times [2022-02-10 02:45:34,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:34,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469687567] [2022-02-10 02:45:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:34,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:35,000 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:35,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469687567] [2022-02-10 02:45:35,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469687567] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:35,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411441595] [2022-02-10 02:45:35,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:35,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:35,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:35,002 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:35,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 02:45:35,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:45:35,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:35,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:45:35,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:35,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:35,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411441595] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:35,247 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:35,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-02-10 02:45:35,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592397536] [2022-02-10 02:45:35,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:35,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:35,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:35,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:35,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:35,248 INFO L87 Difference]: Start difference. First operand 6824 states and 11532 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:35,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:35,579 INFO L93 Difference]: Finished difference Result 10855 states and 18343 transitions. [2022-02-10 02:45:35,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 02:45:35,580 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-10 02:45:35,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:35,600 INFO L225 Difference]: With dead ends: 10855 [2022-02-10 02:45:35,600 INFO L226 Difference]: Without dead ends: 10829 [2022-02-10 02:45:35,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=364, Invalid=896, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 02:45:35,601 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 178 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:35,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 216 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10829 states. [2022-02-10 02:45:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10829 to 7656. [2022-02-10 02:45:35,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7656 states, 7655 states have (on average 1.69157413455258) internal successors, (12949), 7655 states have internal predecessors, (12949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 12949 transitions. [2022-02-10 02:45:35,722 INFO L78 Accepts]: Start accepts. Automaton has 7656 states and 12949 transitions. Word has length 36 [2022-02-10 02:45:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:35,722 INFO L470 AbstractCegarLoop]: Abstraction has 7656 states and 12949 transitions. [2022-02-10 02:45:35,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand 7656 states and 12949 transitions. [2022-02-10 02:45:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:35,733 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:35,733 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:35,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-02-10 02:45:35,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-10 02:45:35,934 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:35,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:35,934 INFO L85 PathProgramCache]: Analyzing trace with hash 39636519, now seen corresponding path program 34 times [2022-02-10 02:45:35,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:35,934 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617948153] [2022-02-10 02:45:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:35,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:36,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:36,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617948153] [2022-02-10 02:45:36,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617948153] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:36,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163603883] [2022-02-10 02:45:36,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:36,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:36,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:36,098 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:36,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 02:45:36,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:36,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:36,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:36,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:36,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:36,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163603883] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:36,438 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:36,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:36,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14259751] [2022-02-10 02:45:36,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:36,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:36,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:36,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:36,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:36,439 INFO L87 Difference]: Start difference. First operand 7656 states and 12949 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:36,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:36,698 INFO L93 Difference]: Finished difference Result 8946 states and 14965 transitions. [2022-02-10 02:45:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:36,698 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:36,711 INFO L225 Difference]: With dead ends: 8946 [2022-02-10 02:45:36,711 INFO L226 Difference]: Without dead ends: 8936 [2022-02-10 02:45:36,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:36,712 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 54 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:36,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 852 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8936 states. [2022-02-10 02:45:36,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8936 to 8162. [2022-02-10 02:45:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8162 states, 8161 states have (on average 1.6898664379365274) internal successors, (13791), 8161 states have internal predecessors, (13791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 13791 transitions. [2022-02-10 02:45:36,830 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 13791 transitions. Word has length 39 [2022-02-10 02:45:36,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:36,831 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 13791 transitions. [2022-02-10 02:45:36,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:36,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 13791 transitions. [2022-02-10 02:45:36,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:36,841 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:36,841 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:36,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:37,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-10 02:45:37,042 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash 964846541, now seen corresponding path program 35 times [2022-02-10 02:45:37,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:37,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530468098] [2022-02-10 02:45:37,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:37,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:37,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:37,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530468098] [2022-02-10 02:45:37,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530468098] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:37,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715312803] [2022-02-10 02:45:37,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:37,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:37,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:37,204 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:37,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 02:45:37,226 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:45:37,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:37,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:37,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:37,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:37,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715312803] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:37,520 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:37,520 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:37,520 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285966443] [2022-02-10 02:45:37,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:37,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:37,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:37,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:37,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:37,521 INFO L87 Difference]: Start difference. First operand 8162 states and 13791 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:37,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:37,714 INFO L93 Difference]: Finished difference Result 9347 states and 15651 transitions. [2022-02-10 02:45:37,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:37,715 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:37,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:37,728 INFO L225 Difference]: With dead ends: 9347 [2022-02-10 02:45:37,728 INFO L226 Difference]: Without dead ends: 9337 [2022-02-10 02:45:37,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:37,729 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 45 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:37,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 801 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:37,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9337 states. [2022-02-10 02:45:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9337 to 8844. [2022-02-10 02:45:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8844 states, 8843 states have (on average 1.6893588148818275) internal successors, (14939), 8843 states have internal predecessors, (14939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8844 states to 8844 states and 14939 transitions. [2022-02-10 02:45:37,852 INFO L78 Accepts]: Start accepts. Automaton has 8844 states and 14939 transitions. Word has length 39 [2022-02-10 02:45:37,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:37,852 INFO L470 AbstractCegarLoop]: Abstraction has 8844 states and 14939 transitions. [2022-02-10 02:45:37,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:37,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8844 states and 14939 transitions. [2022-02-10 02:45:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:37,862 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:37,862 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:37,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-02-10 02:45:38,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-10 02:45:38,064 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:38,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:38,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1313883805, now seen corresponding path program 36 times [2022-02-10 02:45:38,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:38,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73631255] [2022-02-10 02:45:38,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:38,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:38,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:38,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73631255] [2022-02-10 02:45:38,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73631255] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:38,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786238386] [2022-02-10 02:45:38,230 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:38,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:38,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:38,236 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:38,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 02:45:38,264 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:45:38,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:38,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:38,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:38,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:38,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786238386] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:38,563 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:38,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:38,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302537648] [2022-02-10 02:45:38,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:38,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:38,563 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:38,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:38,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:38,564 INFO L87 Difference]: Start difference. First operand 8844 states and 14939 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:38,791 INFO L93 Difference]: Finished difference Result 10726 states and 18015 transitions. [2022-02-10 02:45:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:38,792 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:38,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:38,807 INFO L225 Difference]: With dead ends: 10726 [2022-02-10 02:45:38,807 INFO L226 Difference]: Without dead ends: 10716 [2022-02-10 02:45:38,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:38,808 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 44 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:38,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 788 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:38,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2022-02-10 02:45:38,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 10044. [2022-02-10 02:45:38,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10044 states, 10043 states have (on average 1.6894354276610575) internal successors, (16967), 10043 states have internal predecessors, (16967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:38,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10044 states to 10044 states and 16967 transitions. [2022-02-10 02:45:38,943 INFO L78 Accepts]: Start accepts. Automaton has 10044 states and 16967 transitions. Word has length 39 [2022-02-10 02:45:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:38,944 INFO L470 AbstractCegarLoop]: Abstraction has 10044 states and 16967 transitions. [2022-02-10 02:45:38,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:38,944 INFO L276 IsEmpty]: Start isEmpty. Operand 10044 states and 16967 transitions. [2022-02-10 02:45:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:38,952 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:38,953 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:38,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-10 02:45:39,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:39,154 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1142187695, now seen corresponding path program 37 times [2022-02-10 02:45:39,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:39,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528022494] [2022-02-10 02:45:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:39,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:39,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:39,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528022494] [2022-02-10 02:45:39,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528022494] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:39,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975602324] [2022-02-10 02:45:39,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:39,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:39,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:39,306 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:39,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 02:45:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:39,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:39,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:39,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:39,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975602324] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:39,569 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:39,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:39,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139000813] [2022-02-10 02:45:39,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:39,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:39,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:39,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:39,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:39,570 INFO L87 Difference]: Start difference. First operand 10044 states and 16967 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:39,768 INFO L93 Difference]: Finished difference Result 12353 states and 20778 transitions. [2022-02-10 02:45:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:39,793 INFO L225 Difference]: With dead ends: 12353 [2022-02-10 02:45:39,793 INFO L226 Difference]: Without dead ends: 12343 [2022-02-10 02:45:39,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:39,794 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 43 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:39,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 775 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12343 states. [2022-02-10 02:45:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12343 to 11538. [2022-02-10 02:45:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11538 states, 11537 states have (on average 1.6892606396810264) internal successors, (19489), 11537 states have internal predecessors, (19489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:39,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11538 states to 11538 states and 19489 transitions. [2022-02-10 02:45:39,971 INFO L78 Accepts]: Start accepts. Automaton has 11538 states and 19489 transitions. Word has length 39 [2022-02-10 02:45:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:39,971 INFO L470 AbstractCegarLoop]: Abstraction has 11538 states and 19489 transitions. [2022-02-10 02:45:39,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:39,971 INFO L276 IsEmpty]: Start isEmpty. Operand 11538 states and 19489 transitions. [2022-02-10 02:45:39,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:39,981 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:39,981 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:39,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-02-10 02:45:40,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-02-10 02:45:40,182 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:40,182 INFO L85 PathProgramCache]: Analyzing trace with hash 776653599, now seen corresponding path program 38 times [2022-02-10 02:45:40,182 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:40,182 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192242027] [2022-02-10 02:45:40,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:40,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:40,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:40,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192242027] [2022-02-10 02:45:40,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192242027] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:40,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655284690] [2022-02-10 02:45:40,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:40,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:40,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:40,365 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:40,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 02:45:40,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:40,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:40,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:40,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:40,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:40,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655284690] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:40,661 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:40,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:40,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136819137] [2022-02-10 02:45:40,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:40,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:40,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:40,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:40,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:40,662 INFO L87 Difference]: Start difference. First operand 11538 states and 19489 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:40,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:40,884 INFO L93 Difference]: Finished difference Result 14762 states and 24822 transitions. [2022-02-10 02:45:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:40,885 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:40,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:40,911 INFO L225 Difference]: With dead ends: 14762 [2022-02-10 02:45:40,911 INFO L226 Difference]: Without dead ends: 14746 [2022-02-10 02:45:40,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:40,912 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 51 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:40,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 812 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14746 states. [2022-02-10 02:45:41,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14746 to 13313. [2022-02-10 02:45:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13313 states, 13312 states have (on average 1.6884014423076923) internal successors, (22476), 13312 states have internal predecessors, (22476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 22476 transitions. [2022-02-10 02:45:41,123 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 22476 transitions. Word has length 39 [2022-02-10 02:45:41,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:41,123 INFO L470 AbstractCegarLoop]: Abstraction has 13313 states and 22476 transitions. [2022-02-10 02:45:41,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:41,123 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 22476 transitions. [2022-02-10 02:45:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:41,136 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:41,137 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:41,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:41,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-02-10 02:45:41,338 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:41,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:41,338 INFO L85 PathProgramCache]: Analyzing trace with hash -199146091, now seen corresponding path program 39 times [2022-02-10 02:45:41,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:41,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006967564] [2022-02-10 02:45:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:41,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:41,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:41,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006967564] [2022-02-10 02:45:41,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006967564] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:41,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046312421] [2022-02-10 02:45:41,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:41,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:41,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:41,511 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:41,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 02:45:41,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:45:41,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:41,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:41,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:41,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:41,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046312421] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:41,860 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:41,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:41,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457033290] [2022-02-10 02:45:41,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:41,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:41,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:41,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:41,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:41,861 INFO L87 Difference]: Start difference. First operand 13313 states and 22476 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:42,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:42,109 INFO L93 Difference]: Finished difference Result 15126 states and 25405 transitions. [2022-02-10 02:45:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:42,109 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:42,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:42,143 INFO L225 Difference]: With dead ends: 15126 [2022-02-10 02:45:42,143 INFO L226 Difference]: Without dead ends: 15110 [2022-02-10 02:45:42,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:42,147 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 41 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:42,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 734 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15110 states. [2022-02-10 02:45:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15110 to 14687. [2022-02-10 02:45:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14687 states, 14686 states have (on average 1.6873212583412773) internal successors, (24780), 14686 states have internal predecessors, (24780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14687 states to 14687 states and 24780 transitions. [2022-02-10 02:45:42,474 INFO L78 Accepts]: Start accepts. Automaton has 14687 states and 24780 transitions. Word has length 39 [2022-02-10 02:45:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:42,474 INFO L470 AbstractCegarLoop]: Abstraction has 14687 states and 24780 transitions. [2022-02-10 02:45:42,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 14687 states and 24780 transitions. [2022-02-10 02:45:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:42,488 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:42,488 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:42,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-02-10 02:45:42,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-02-10 02:45:42,694 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:42,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:42,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1193382571, now seen corresponding path program 40 times [2022-02-10 02:45:42,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:42,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884240829] [2022-02-10 02:45:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:42,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:42,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:42,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884240829] [2022-02-10 02:45:42,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884240829] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:42,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528829252] [2022-02-10 02:45:42,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:42,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:42,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:42,863 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:42,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 02:45:42,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:42,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:42,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:42,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:43,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:43,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528829252] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:43,221 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:43,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:43,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361766892] [2022-02-10 02:45:43,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:43,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:43,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:43,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:43,222 INFO L87 Difference]: Start difference. First operand 14687 states and 24780 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:43,454 INFO L93 Difference]: Finished difference Result 17342 states and 29163 transitions. [2022-02-10 02:45:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:43,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:43,480 INFO L225 Difference]: With dead ends: 17342 [2022-02-10 02:45:43,481 INFO L226 Difference]: Without dead ends: 17326 [2022-02-10 02:45:43,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:43,481 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 40 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:43,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 721 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:43,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17326 states. [2022-02-10 02:45:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17326 to 16819. [2022-02-10 02:45:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16819 states, 16818 states have (on average 1.6872398620525628) internal successors, (28376), 16818 states have internal predecessors, (28376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16819 states to 16819 states and 28376 transitions. [2022-02-10 02:45:43,805 INFO L78 Accepts]: Start accepts. Automaton has 16819 states and 28376 transitions. Word has length 39 [2022-02-10 02:45:43,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:43,806 INFO L470 AbstractCegarLoop]: Abstraction has 16819 states and 28376 transitions. [2022-02-10 02:45:43,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 16819 states and 28376 transitions. [2022-02-10 02:45:43,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:43,823 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:43,823 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:43,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:44,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:44,048 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:44,049 INFO L85 PathProgramCache]: Analyzing trace with hash -924182793, now seen corresponding path program 41 times [2022-02-10 02:45:44,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:44,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492558079] [2022-02-10 02:45:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:44,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:44,213 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:44,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492558079] [2022-02-10 02:45:44,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492558079] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:44,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738827740] [2022-02-10 02:45:44,213 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:44,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:44,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:44,215 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:44,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 02:45:44,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:45:44,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:44,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:44,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:44,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:44,570 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:44,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738827740] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:44,571 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:44,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:44,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146139542] [2022-02-10 02:45:44,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:44,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:44,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:44,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:44,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:44,573 INFO L87 Difference]: Start difference. First operand 16819 states and 28376 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:44,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:44,833 INFO L93 Difference]: Finished difference Result 19867 states and 33435 transitions. [2022-02-10 02:45:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:44,833 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:44,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:44,865 INFO L225 Difference]: With dead ends: 19867 [2022-02-10 02:45:44,865 INFO L226 Difference]: Without dead ends: 19851 [2022-02-10 02:45:44,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:44,865 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 39 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:44,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 708 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19851 states. [2022-02-10 02:45:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19851 to 19293. [2022-02-10 02:45:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19293 states, 19292 states have (on average 1.6872797014306449) internal successors, (32551), 19292 states have internal predecessors, (32551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19293 states to 19293 states and 32551 transitions. [2022-02-10 02:45:45,165 INFO L78 Accepts]: Start accepts. Automaton has 19293 states and 32551 transitions. Word has length 39 [2022-02-10 02:45:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:45,165 INFO L470 AbstractCegarLoop]: Abstraction has 19293 states and 32551 transitions. [2022-02-10 02:45:45,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:45,165 INFO L276 IsEmpty]: Start isEmpty. Operand 19293 states and 32551 transitions. [2022-02-10 02:45:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:45,179 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:45,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:45,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-02-10 02:45:45,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:45,383 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:45,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:45,383 INFO L85 PathProgramCache]: Analyzing trace with hash -964728985, now seen corresponding path program 42 times [2022-02-10 02:45:45,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:45,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975916569] [2022-02-10 02:45:45,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:45,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:45,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:45,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975916569] [2022-02-10 02:45:45,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975916569] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:45,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020922510] [2022-02-10 02:45:45,542 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:45,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:45,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:45,544 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:45,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 02:45:45,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:45:45,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:45,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:45,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:45,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:45,979 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:45,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020922510] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:45,980 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:45,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:45,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026145721] [2022-02-10 02:45:45,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:45,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:45,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:45,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:45,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:45,981 INFO L87 Difference]: Start difference. First operand 19293 states and 32551 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:46,228 INFO L93 Difference]: Finished difference Result 23027 states and 38738 transitions. [2022-02-10 02:45:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:46,229 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:46,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:46,269 INFO L225 Difference]: With dead ends: 23027 [2022-02-10 02:45:46,269 INFO L226 Difference]: Without dead ends: 23005 [2022-02-10 02:45:46,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:46,270 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 47 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:46,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 760 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23005 states. [2022-02-10 02:45:46,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23005 to 22056. [2022-02-10 02:45:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22056 states, 22055 states have (on average 1.6871457719338019) internal successors, (37210), 22055 states have internal predecessors, (37210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22056 states to 22056 states and 37210 transitions. [2022-02-10 02:45:46,639 INFO L78 Accepts]: Start accepts. Automaton has 22056 states and 37210 transitions. Word has length 39 [2022-02-10 02:45:46,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:46,639 INFO L470 AbstractCegarLoop]: Abstraction has 22056 states and 37210 transitions. [2022-02-10 02:45:46,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:46,639 INFO L276 IsEmpty]: Start isEmpty. Operand 22056 states and 37210 transitions. [2022-02-10 02:45:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:46,655 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:46,656 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:46,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-10 02:45:46,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-02-10 02:45:46,856 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:46,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:46,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1848750429, now seen corresponding path program 43 times [2022-02-10 02:45:46,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:46,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479931118] [2022-02-10 02:45:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:46,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:46,995 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:46,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479931118] [2022-02-10 02:45:46,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479931118] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:46,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664979022] [2022-02-10 02:45:46,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:46,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:46,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:46,997 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:46,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 02:45:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:47,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:47,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:47,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:47,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664979022] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:47,279 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:47,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:47,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228675963] [2022-02-10 02:45:47,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:47,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:47,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:47,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:47,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:47,280 INFO L87 Difference]: Start difference. First operand 22056 states and 37210 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:47,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:47,568 INFO L93 Difference]: Finished difference Result 23347 states and 39255 transitions. [2022-02-10 02:45:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:47,569 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:47,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:47,610 INFO L225 Difference]: With dead ends: 23347 [2022-02-10 02:45:47,610 INFO L226 Difference]: Without dead ends: 23329 [2022-02-10 02:45:47,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:47,610 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 37 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:47,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 696 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23329 states. [2022-02-10 02:45:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23329 to 23186. [2022-02-10 02:45:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23186 states, 23185 states have (on average 1.685615699805909) internal successors, (39081), 23185 states have internal predecessors, (39081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23186 states to 23186 states and 39081 transitions. [2022-02-10 02:45:47,956 INFO L78 Accepts]: Start accepts. Automaton has 23186 states and 39081 transitions. Word has length 39 [2022-02-10 02:45:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:47,956 INFO L470 AbstractCegarLoop]: Abstraction has 23186 states and 39081 transitions. [2022-02-10 02:45:47,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 23186 states and 39081 transitions. [2022-02-10 02:45:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:47,974 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:47,974 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:47,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-02-10 02:45:48,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-02-10 02:45:48,175 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:48,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:48,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1288525299, now seen corresponding path program 44 times [2022-02-10 02:45:48,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:48,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158154980] [2022-02-10 02:45:48,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:48,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:48,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:48,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158154980] [2022-02-10 02:45:48,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158154980] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:48,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587696536] [2022-02-10 02:45:48,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:48,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:48,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:48,342 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:48,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 02:45:48,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:48,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:48,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:48,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:48,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:48,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587696536] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:48,687 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:48,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:48,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544140162] [2022-02-10 02:45:48,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:48,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:48,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:48,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:48,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:48,688 INFO L87 Difference]: Start difference. First operand 23186 states and 39081 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:48,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:48,935 INFO L93 Difference]: Finished difference Result 24977 states and 41987 transitions. [2022-02-10 02:45:48,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:48,936 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:48,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:49,065 INFO L225 Difference]: With dead ends: 24977 [2022-02-10 02:45:49,066 INFO L226 Difference]: Without dead ends: 24959 [2022-02-10 02:45:49,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:49,066 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 36 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:49,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 684 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24959 states. [2022-02-10 02:45:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24959 to 24820. [2022-02-10 02:45:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24820 states, 24819 states have (on average 1.6848785204883356) internal successors, (41817), 24819 states have internal predecessors, (41817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24820 states to 24820 states and 41817 transitions. [2022-02-10 02:45:49,438 INFO L78 Accepts]: Start accepts. Automaton has 24820 states and 41817 transitions. Word has length 39 [2022-02-10 02:45:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:49,439 INFO L470 AbstractCegarLoop]: Abstraction has 24820 states and 41817 transitions. [2022-02-10 02:45:49,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 24820 states and 41817 transitions. [2022-02-10 02:45:49,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:49,460 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:49,460 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:49,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-02-10 02:45:49,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-02-10 02:45:49,661 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:49,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:49,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1015254721, now seen corresponding path program 45 times [2022-02-10 02:45:49,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:49,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879046175] [2022-02-10 02:45:49,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:49,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:49,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:49,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879046175] [2022-02-10 02:45:49,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879046175] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:49,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293391967] [2022-02-10 02:45:49,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:45:49,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:49,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:49,806 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:49,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 02:45:49,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:45:49,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:49,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:49,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:49,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:45:50,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293391967] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:50,078 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:50,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:50,078 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049976103] [2022-02-10 02:45:50,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:50,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:50,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:50,079 INFO L87 Difference]: Start difference. First operand 24820 states and 41817 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:50,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:50,363 INFO L93 Difference]: Finished difference Result 26850 states and 45134 transitions. [2022-02-10 02:45:50,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:50,364 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:50,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:50,527 INFO L225 Difference]: With dead ends: 26850 [2022-02-10 02:45:50,527 INFO L226 Difference]: Without dead ends: 26832 [2022-02-10 02:45:50,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:50,528 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 35 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:50,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 672 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:50,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26832 states. [2022-02-10 02:45:51,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26832 to 26697. [2022-02-10 02:45:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26697 states, 26696 states have (on average 1.6844471081810009) internal successors, (44968), 26696 states have internal predecessors, (44968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26697 states to 26697 states and 44968 transitions. [2022-02-10 02:45:51,099 INFO L78 Accepts]: Start accepts. Automaton has 26697 states and 44968 transitions. Word has length 39 [2022-02-10 02:45:51,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:51,100 INFO L470 AbstractCegarLoop]: Abstraction has 26697 states and 44968 transitions. [2022-02-10 02:45:51,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 26697 states and 44968 transitions. [2022-02-10 02:45:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 02:45:51,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:51,121 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:51,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-10 02:45:51,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:51,323 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1802523217, now seen corresponding path program 46 times [2022-02-10 02:45:51,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:51,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242050987] [2022-02-10 02:45:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:51,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:51,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:51,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242050987] [2022-02-10 02:45:51,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242050987] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:51,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215624026] [2022-02-10 02:45:51,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:45:51,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:51,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:51,471 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:51,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 02:45:51,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:45:51,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:51,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-10 02:45:51,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:51,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:45:51,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215624026] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:51,753 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:51,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2022-02-10 02:45:51,753 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591736372] [2022-02-10 02:45:51,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:51,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:51,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:51,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:51,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:51,754 INFO L87 Difference]: Start difference. First operand 26697 states and 44968 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:52,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:52,042 INFO L93 Difference]: Finished difference Result 29020 states and 48765 transitions. [2022-02-10 02:45:52,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:45:52,043 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 02:45:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:52,100 INFO L225 Difference]: With dead ends: 29020 [2022-02-10 02:45:52,100 INFO L226 Difference]: Without dead ends: 29002 [2022-02-10 02:45:52,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:52,101 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 43 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:52,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 715 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:52,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29002 states. [2022-02-10 02:45:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29002 to 28854. [2022-02-10 02:45:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28854 states, 28853 states have (on average 1.6839150175025128) internal successors, (48586), 28853 states have internal predecessors, (48586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28854 states to 28854 states and 48586 transitions. [2022-02-10 02:45:52,641 INFO L78 Accepts]: Start accepts. Automaton has 28854 states and 48586 transitions. Word has length 39 [2022-02-10 02:45:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:52,642 INFO L470 AbstractCegarLoop]: Abstraction has 28854 states and 48586 transitions. [2022-02-10 02:45:52,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 28854 states and 48586 transitions. [2022-02-10 02:45:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 02:45:52,667 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:52,667 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:52,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-10 02:45:52,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:52,868 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:52,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:52,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1209335699, now seen corresponding path program 47 times [2022-02-10 02:45:52,869 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:52,869 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141032378] [2022-02-10 02:45:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:52,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:52,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:52,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141032378] [2022-02-10 02:45:52,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141032378] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:52,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543205409] [2022-02-10 02:45:52,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:45:52,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:52,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:52,928 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:52,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-10 02:45:52,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:45:52,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:52,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:52,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:53,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:53,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543205409] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:53,161 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:53,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-10 02:45:53,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569051784] [2022-02-10 02:45:53,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:53,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:45:53,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:53,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:45:53,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:45:53,162 INFO L87 Difference]: Start difference. First operand 28854 states and 48586 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:53,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:53,410 INFO L93 Difference]: Finished difference Result 43204 states and 71800 transitions. [2022-02-10 02:45:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:45:53,410 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-10 02:45:53,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:53,493 INFO L225 Difference]: With dead ends: 43204 [2022-02-10 02:45:53,493 INFO L226 Difference]: Without dead ends: 43192 [2022-02-10 02:45:53,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:45:53,494 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 186 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:53,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 141 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:53,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43192 states. [2022-02-10 02:45:54,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43192 to 28851. [2022-02-10 02:45:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28851 states, 28850 states have (on average 1.6839514731369152) internal successors, (48582), 28850 states have internal predecessors, (48582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:54,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28851 states to 28851 states and 48582 transitions. [2022-02-10 02:45:54,360 INFO L78 Accepts]: Start accepts. Automaton has 28851 states and 48582 transitions. Word has length 42 [2022-02-10 02:45:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:54,360 INFO L470 AbstractCegarLoop]: Abstraction has 28851 states and 48582 transitions. [2022-02-10 02:45:54,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 28851 states and 48582 transitions. [2022-02-10 02:45:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 02:45:54,388 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:54,388 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:54,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:54,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:54,589 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:54,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:54,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1136051565, now seen corresponding path program 48 times [2022-02-10 02:45:54,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:54,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849376926] [2022-02-10 02:45:54,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:54,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:54,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:54,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849376926] [2022-02-10 02:45:54,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849376926] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:54,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577376236] [2022-02-10 02:45:54,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:45:54,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:54,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:54,651 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:54,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-10 02:45:54,679 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:45:54,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:54,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:54,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:54,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:54,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577376236] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:54,875 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:54,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:45:54,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820003792] [2022-02-10 02:45:54,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:54,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:54,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:54,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:54,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:54,876 INFO L87 Difference]: Start difference. First operand 28851 states and 48582 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:55,695 INFO L93 Difference]: Finished difference Result 52406 states and 86639 transitions. [2022-02-10 02:45:55,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 02:45:55,696 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-10 02:45:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:55,819 INFO L225 Difference]: With dead ends: 52406 [2022-02-10 02:45:55,820 INFO L226 Difference]: Without dead ends: 52398 [2022-02-10 02:45:55,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=804, Invalid=1952, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:45:55,820 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 386 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:55,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 337 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:45:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52398 states. [2022-02-10 02:45:56,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52398 to 34213. [2022-02-10 02:45:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34213 states, 34212 states have (on average 1.6711387817140184) internal successors, (57173), 34212 states have internal predecessors, (57173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34213 states to 34213 states and 57173 transitions. [2022-02-10 02:45:56,907 INFO L78 Accepts]: Start accepts. Automaton has 34213 states and 57173 transitions. Word has length 42 [2022-02-10 02:45:56,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:56,907 INFO L470 AbstractCegarLoop]: Abstraction has 34213 states and 57173 transitions. [2022-02-10 02:45:56,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:56,907 INFO L276 IsEmpty]: Start isEmpty. Operand 34213 states and 57173 transitions. [2022-02-10 02:45:56,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 02:45:56,938 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:56,938 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:56,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:57,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-02-10 02:45:57,140 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:57,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1506008403, now seen corresponding path program 49 times [2022-02-10 02:45:57,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:57,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246982342] [2022-02-10 02:45:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:57,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:57,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:57,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246982342] [2022-02-10 02:45:57,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246982342] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:57,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762734643] [2022-02-10 02:45:57,299 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:45:57,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:57,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:57,300 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:57,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-10 02:45:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:57,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:57,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:57,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:57,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762734643] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:57,522 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:57,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:45:57,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50382137] [2022-02-10 02:45:57,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:57,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:57,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:57,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:57,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:57,523 INFO L87 Difference]: Start difference. First operand 34213 states and 57173 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:45:58,053 INFO L93 Difference]: Finished difference Result 49755 states and 82356 transitions. [2022-02-10 02:45:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-10 02:45:58,053 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-10 02:45:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:45:58,178 INFO L225 Difference]: With dead ends: 49755 [2022-02-10 02:45:58,179 INFO L226 Difference]: Without dead ends: 49746 [2022-02-10 02:45:58,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=308, Invalid=814, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:45:58,179 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 292 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:45:58,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 294 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:45:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49746 states. [2022-02-10 02:45:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49746 to 37774. [2022-02-10 02:45:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37774 states, 37773 states have (on average 1.6750589045085114) internal successors, (63272), 37773 states have internal predecessors, (63272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37774 states to 37774 states and 63272 transitions. [2022-02-10 02:45:59,109 INFO L78 Accepts]: Start accepts. Automaton has 37774 states and 63272 transitions. Word has length 42 [2022-02-10 02:45:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:45:59,110 INFO L470 AbstractCegarLoop]: Abstraction has 37774 states and 63272 transitions. [2022-02-10 02:45:59,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:45:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 37774 states and 63272 transitions. [2022-02-10 02:45:59,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 02:45:59,140 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:45:59,140 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:45:59,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-10 02:45:59,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-02-10 02:45:59,341 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:45:59,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:45:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1153575793, now seen corresponding path program 50 times [2022-02-10 02:45:59,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:45:59,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388087439] [2022-02-10 02:45:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:45:59,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:45:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:45:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:59,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:45:59,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388087439] [2022-02-10 02:45:59,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388087439] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:45:59,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635827156] [2022-02-10 02:45:59,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:45:59,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:45:59,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:45:59,536 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:45:59,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-10 02:45:59,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:45:59,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:45:59,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:45:59,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:45:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:59,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:45:59,748 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:45:59,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635827156] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:45:59,748 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:45:59,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:45:59,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438816659] [2022-02-10 02:45:59,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:45:59,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:45:59,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:45:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:45:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:45:59,749 INFO L87 Difference]: Start difference. First operand 37774 states and 63272 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:00,309 INFO L93 Difference]: Finished difference Result 54829 states and 90814 transitions. [2022-02-10 02:46:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 02:46:00,309 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-10 02:46:00,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:00,448 INFO L225 Difference]: With dead ends: 54829 [2022-02-10 02:46:00,448 INFO L226 Difference]: Without dead ends: 54818 [2022-02-10 02:46:00,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 02:46:00,448 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 224 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:00,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 292 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:00,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54818 states. [2022-02-10 02:46:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54818 to 38723. [2022-02-10 02:46:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38723 states, 38722 states have (on average 1.6776251226692835) internal successors, (64961), 38722 states have internal predecessors, (64961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38723 states to 38723 states and 64961 transitions. [2022-02-10 02:46:01,495 INFO L78 Accepts]: Start accepts. Automaton has 38723 states and 64961 transitions. Word has length 42 [2022-02-10 02:46:01,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:01,495 INFO L470 AbstractCegarLoop]: Abstraction has 38723 states and 64961 transitions. [2022-02-10 02:46:01,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:01,495 INFO L276 IsEmpty]: Start isEmpty. Operand 38723 states and 64961 transitions. [2022-02-10 02:46:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-10 02:46:01,528 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:01,528 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:01,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:01,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:01,729 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:01,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:01,729 INFO L85 PathProgramCache]: Analyzing trace with hash 730317779, now seen corresponding path program 51 times [2022-02-10 02:46:01,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:01,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139765023] [2022-02-10 02:46:01,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:01,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:01,791 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:01,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139765023] [2022-02-10 02:46:01,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139765023] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:01,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004199353] [2022-02-10 02:46:01,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:46:01,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:01,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:01,792 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:01,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-10 02:46:01,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:46:01,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:01,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:46:01,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:01,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:02,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004199353] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:02,017 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:02,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:46:02,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512453764] [2022-02-10 02:46:02,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:02,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:46:02,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:46:02,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:46:02,019 INFO L87 Difference]: Start difference. First operand 38723 states and 64961 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:02,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:02,540 INFO L93 Difference]: Finished difference Result 46852 states and 77234 transitions. [2022-02-10 02:46:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:46:02,540 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-02-10 02:46:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:02,640 INFO L225 Difference]: With dead ends: 46852 [2022-02-10 02:46:02,641 INFO L226 Difference]: Without dead ends: 46841 [2022-02-10 02:46:02,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:46:02,641 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 165 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:02,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 195 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46841 states. [2022-02-10 02:46:03,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46841 to 38719. [2022-02-10 02:46:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38719 states, 38718 states have (on average 1.6770752621519707) internal successors, (64933), 38718 states have internal predecessors, (64933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38719 states to 38719 states and 64933 transitions. [2022-02-10 02:46:03,568 INFO L78 Accepts]: Start accepts. Automaton has 38719 states and 64933 transitions. Word has length 42 [2022-02-10 02:46:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:03,568 INFO L470 AbstractCegarLoop]: Abstraction has 38719 states and 64933 transitions. [2022-02-10 02:46:03,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:03,569 INFO L276 IsEmpty]: Start isEmpty. Operand 38719 states and 64933 transitions. [2022-02-10 02:46:03,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:03,610 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:03,610 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:03,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:03,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-10 02:46:03,811 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:03,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:03,811 INFO L85 PathProgramCache]: Analyzing trace with hash 155949955, now seen corresponding path program 52 times [2022-02-10 02:46:03,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:03,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981277383] [2022-02-10 02:46:03,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:03,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:03,875 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:03,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981277383] [2022-02-10 02:46:03,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981277383] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:03,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121528221] [2022-02-10 02:46:03,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:46:03,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:03,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:03,877 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:03,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-10 02:46:03,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:46:03,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:03,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:46:03,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:04,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:04,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121528221] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:04,087 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:04,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2022-02-10 02:46:04,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528841351] [2022-02-10 02:46:04,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:04,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:46:04,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:46:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:46:04,088 INFO L87 Difference]: Start difference. First operand 38719 states and 64933 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:04,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:04,544 INFO L93 Difference]: Finished difference Result 41205 states and 68943 transitions. [2022-02-10 02:46:04,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:46:04,544 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:04,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:04,620 INFO L225 Difference]: With dead ends: 41205 [2022-02-10 02:46:04,620 INFO L226 Difference]: Without dead ends: 41201 [2022-02-10 02:46:04,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2022-02-10 02:46:04,621 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 104 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:04,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 409 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41201 states. [2022-02-10 02:46:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41201 to 39093. [2022-02-10 02:46:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39093 states, 39092 states have (on average 1.6766601862273611) internal successors, (65544), 39092 states have internal predecessors, (65544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39093 states to 39093 states and 65544 transitions. [2022-02-10 02:46:05,510 INFO L78 Accepts]: Start accepts. Automaton has 39093 states and 65544 transitions. Word has length 45 [2022-02-10 02:46:05,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:05,510 INFO L470 AbstractCegarLoop]: Abstraction has 39093 states and 65544 transitions. [2022-02-10 02:46:05,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:05,510 INFO L276 IsEmpty]: Start isEmpty. Operand 39093 states and 65544 transitions. [2022-02-10 02:46:05,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:05,550 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:05,550 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:05,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-10 02:46:05,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-02-10 02:46:05,751 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:05,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:05,751 INFO L85 PathProgramCache]: Analyzing trace with hash -362317681, now seen corresponding path program 53 times [2022-02-10 02:46:05,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:05,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774646610] [2022-02-10 02:46:05,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:05,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:05,813 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:05,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774646610] [2022-02-10 02:46:05,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774646610] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:05,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141139348] [2022-02-10 02:46:05,814 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:46:05,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:05,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:05,815 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:05,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-10 02:46:05,844 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:46:05,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:05,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:46:05,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:05,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:06,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141139348] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:06,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:06,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:46:06,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974012156] [2022-02-10 02:46:06,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:06,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:46:06,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:06,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:46:06,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:46:06,039 INFO L87 Difference]: Start difference. First operand 39093 states and 65544 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:06,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:06,809 INFO L93 Difference]: Finished difference Result 41348 states and 69157 transitions. [2022-02-10 02:46:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-10 02:46:06,809 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:06,893 INFO L225 Difference]: With dead ends: 41348 [2022-02-10 02:46:06,894 INFO L226 Difference]: Without dead ends: 41346 [2022-02-10 02:46:06,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=838, Invalid=1612, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:46:06,894 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 280 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:06,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 376 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:06,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41346 states. [2022-02-10 02:46:07,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41346 to 35818. [2022-02-10 02:46:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35818 states, 35817 states have (on average 1.6745679425970907) internal successors, (59978), 35817 states have internal predecessors, (59978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35818 states to 35818 states and 59978 transitions. [2022-02-10 02:46:07,790 INFO L78 Accepts]: Start accepts. Automaton has 35818 states and 59978 transitions. Word has length 45 [2022-02-10 02:46:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:07,790 INFO L470 AbstractCegarLoop]: Abstraction has 35818 states and 59978 transitions. [2022-02-10 02:46:07,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 35818 states and 59978 transitions. [2022-02-10 02:46:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:07,826 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:07,826 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:07,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-02-10 02:46:08,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:08,028 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:08,028 INFO L85 PathProgramCache]: Analyzing trace with hash 982612569, now seen corresponding path program 54 times [2022-02-10 02:46:08,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:08,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298018828] [2022-02-10 02:46:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:08,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:08,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:08,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298018828] [2022-02-10 02:46:08,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298018828] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:08,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365498851] [2022-02-10 02:46:08,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:46:08,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:08,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:08,091 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:08,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-10 02:46:08,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:46:08,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:08,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:46:08,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 25 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:08,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:08,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365498851] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:08,395 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:08,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-02-10 02:46:08,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536218650] [2022-02-10 02:46:08,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:08,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:46:08,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:46:08,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:46:08,396 INFO L87 Difference]: Start difference. First operand 35818 states and 59978 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:09,155 INFO L93 Difference]: Finished difference Result 39155 states and 65340 transitions. [2022-02-10 02:46:09,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 02:46:09,156 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:09,404 INFO L225 Difference]: With dead ends: 39155 [2022-02-10 02:46:09,404 INFO L226 Difference]: Without dead ends: 39151 [2022-02-10 02:46:09,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=981, Invalid=2099, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 02:46:09,405 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 216 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:09,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 455 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:09,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39151 states. [2022-02-10 02:46:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39151 to 35165. [2022-02-10 02:46:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35165 states, 35164 states have (on average 1.6729041064725287) internal successors, (58826), 35164 states have internal predecessors, (58826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:10,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35165 states to 35165 states and 58826 transitions. [2022-02-10 02:46:10,099 INFO L78 Accepts]: Start accepts. Automaton has 35165 states and 58826 transitions. Word has length 45 [2022-02-10 02:46:10,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:10,100 INFO L470 AbstractCegarLoop]: Abstraction has 35165 states and 58826 transitions. [2022-02-10 02:46:10,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:10,100 INFO L276 IsEmpty]: Start isEmpty. Operand 35165 states and 58826 transitions. [2022-02-10 02:46:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:10,132 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:10,132 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:10,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-02-10 02:46:10,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:10,333 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:10,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:10,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1931475889, now seen corresponding path program 55 times [2022-02-10 02:46:10,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:10,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002548049] [2022-02-10 02:46:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:10,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:10,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:10,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002548049] [2022-02-10 02:46:10,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002548049] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:10,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899436549] [2022-02-10 02:46:10,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:46:10,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:10,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:10,389 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:10,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-10 02:46:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:10,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:46:10,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 25 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:10,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:10,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899436549] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:10,678 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:10,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-02-10 02:46:10,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99061152] [2022-02-10 02:46:10,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:10,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:46:10,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:10,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:46:10,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:46:10,679 INFO L87 Difference]: Start difference. First operand 35165 states and 58826 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:11,488 INFO L93 Difference]: Finished difference Result 46797 states and 78262 transitions. [2022-02-10 02:46:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-10 02:46:11,488 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:11,588 INFO L225 Difference]: With dead ends: 46797 [2022-02-10 02:46:11,588 INFO L226 Difference]: Without dead ends: 46793 [2022-02-10 02:46:11,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=933, Invalid=1929, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 02:46:11,589 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 215 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:11,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 445 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:11,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46793 states. [2022-02-10 02:46:12,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46793 to 35872. [2022-02-10 02:46:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35872 states, 35871 states have (on average 1.6741657606423015) internal successors, (60054), 35871 states have internal predecessors, (60054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:12,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35872 states to 35872 states and 60054 transitions. [2022-02-10 02:46:12,563 INFO L78 Accepts]: Start accepts. Automaton has 35872 states and 60054 transitions. Word has length 45 [2022-02-10 02:46:12,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:12,563 INFO L470 AbstractCegarLoop]: Abstraction has 35872 states and 60054 transitions. [2022-02-10 02:46:12,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 35872 states and 60054 transitions. [2022-02-10 02:46:12,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:12,594 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:12,594 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:12,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:12,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-10 02:46:12,796 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1028606505, now seen corresponding path program 56 times [2022-02-10 02:46:12,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:12,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378117162] [2022-02-10 02:46:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:12,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:12,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:12,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378117162] [2022-02-10 02:46:12,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378117162] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:12,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688843787] [2022-02-10 02:46:12,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:46:12,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:12,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:12,851 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:12,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-10 02:46:12,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:46:12,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:12,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:46:12,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:13,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:13,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688843787] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:13,074 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:13,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-02-10 02:46:13,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418544997] [2022-02-10 02:46:13,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:13,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:46:13,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:13,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:46:13,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:46:13,075 INFO L87 Difference]: Start difference. First operand 35872 states and 60054 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:13,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:13,620 INFO L93 Difference]: Finished difference Result 41867 states and 70258 transitions. [2022-02-10 02:46:13,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 02:46:13,620 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:13,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:13,700 INFO L225 Difference]: With dead ends: 41867 [2022-02-10 02:46:13,700 INFO L226 Difference]: Without dead ends: 41852 [2022-02-10 02:46:13,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=776, Invalid=1674, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:46:13,701 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 209 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:13,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 357 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41852 states. [2022-02-10 02:46:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41852 to 30603. [2022-02-10 02:46:14,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30603 states, 30602 states have (on average 1.669564080779034) internal successors, (51092), 30602 states have internal predecessors, (51092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30603 states to 30603 states and 51092 transitions. [2022-02-10 02:46:14,482 INFO L78 Accepts]: Start accepts. Automaton has 30603 states and 51092 transitions. Word has length 45 [2022-02-10 02:46:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:14,482 INFO L470 AbstractCegarLoop]: Abstraction has 30603 states and 51092 transitions. [2022-02-10 02:46:14,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 30603 states and 51092 transitions. [2022-02-10 02:46:14,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:14,514 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:14,514 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:14,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-02-10 02:46:14,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:14,720 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:14,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:14,720 INFO L85 PathProgramCache]: Analyzing trace with hash 811515961, now seen corresponding path program 57 times [2022-02-10 02:46:14,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:14,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832631786] [2022-02-10 02:46:14,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:14,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:14,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:14,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832631786] [2022-02-10 02:46:14,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832631786] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:14,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374210441] [2022-02-10 02:46:14,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:46:14,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:14,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:14,770 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:14,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-10 02:46:14,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:46:14,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:14,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:46:14,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 25 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:14,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:15,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374210441] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:15,012 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:15,012 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2022-02-10 02:46:15,012 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300527578] [2022-02-10 02:46:15,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:15,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:46:15,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:15,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:46:15,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:46:15,013 INFO L87 Difference]: Start difference. First operand 30603 states and 51092 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:15,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:15,742 INFO L93 Difference]: Finished difference Result 51842 states and 86982 transitions. [2022-02-10 02:46:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 02:46:15,743 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:15,857 INFO L225 Difference]: With dead ends: 51842 [2022-02-10 02:46:15,857 INFO L226 Difference]: Without dead ends: 51838 [2022-02-10 02:46:15,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=919, Invalid=1837, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:46:15,858 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 264 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:15,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 416 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51838 states. [2022-02-10 02:46:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51838 to 30921. [2022-02-10 02:46:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30921 states, 30920 states have (on average 1.6704721862871927) internal successors, (51651), 30920 states have internal predecessors, (51651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30921 states to 30921 states and 51651 transitions. [2022-02-10 02:46:16,853 INFO L78 Accepts]: Start accepts. Automaton has 30921 states and 51651 transitions. Word has length 45 [2022-02-10 02:46:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:16,853 INFO L470 AbstractCegarLoop]: Abstraction has 30921 states and 51651 transitions. [2022-02-10 02:46:16,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 30921 states and 51651 transitions. [2022-02-10 02:46:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:16,879 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:16,879 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:16,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-10 02:46:17,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-02-10 02:46:17,080 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:17,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1025039647, now seen corresponding path program 58 times [2022-02-10 02:46:17,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:17,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887751201] [2022-02-10 02:46:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:17,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:17,139 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:17,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887751201] [2022-02-10 02:46:17,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887751201] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:17,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250129800] [2022-02-10 02:46:17,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:46:17,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:17,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:17,141 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:17,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-10 02:46:17,168 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:46:17,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:17,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:46:17,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:17,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:17,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250129800] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:17,391 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:17,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-02-10 02:46:17,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541573393] [2022-02-10 02:46:17,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:17,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:46:17,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:17,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:46:17,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:46:17,392 INFO L87 Difference]: Start difference. First operand 30921 states and 51651 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:17,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:17,924 INFO L93 Difference]: Finished difference Result 44832 states and 75474 transitions. [2022-02-10 02:46:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-10 02:46:17,925 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:17,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:18,173 INFO L225 Difference]: With dead ends: 44832 [2022-02-10 02:46:18,175 INFO L226 Difference]: Without dead ends: 44799 [2022-02-10 02:46:18,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=746, Invalid=1804, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:46:18,184 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 308 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:18,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 274 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:18,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44799 states. [2022-02-10 02:46:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44799 to 29165. [2022-02-10 02:46:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29165 states, 29164 states have (on average 1.6652379646139075) internal successors, (48565), 29164 states have internal predecessors, (48565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29165 states to 29165 states and 48565 transitions. [2022-02-10 02:46:18,816 INFO L78 Accepts]: Start accepts. Automaton has 29165 states and 48565 transitions. Word has length 45 [2022-02-10 02:46:18,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:18,816 INFO L470 AbstractCegarLoop]: Abstraction has 29165 states and 48565 transitions. [2022-02-10 02:46:18,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:18,816 INFO L276 IsEmpty]: Start isEmpty. Operand 29165 states and 48565 transitions. [2022-02-10 02:46:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:18,843 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:18,843 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:18,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-10 02:46:19,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-02-10 02:46:19,044 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:19,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash -422969663, now seen corresponding path program 59 times [2022-02-10 02:46:19,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:19,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397429324] [2022-02-10 02:46:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:19,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:19,100 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:19,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397429324] [2022-02-10 02:46:19,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397429324] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:19,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94164321] [2022-02-10 02:46:19,100 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:46:19,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:19,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:19,102 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:19,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-10 02:46:19,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:46:19,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:19,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:46:19,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 25 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:19,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:19,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94164321] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:19,360 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:19,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 17 [2022-02-10 02:46:19,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950904937] [2022-02-10 02:46:19,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:19,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:46:19,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:46:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:46:19,361 INFO L87 Difference]: Start difference. First operand 29165 states and 48565 transitions. Second operand has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:20,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:20,138 INFO L93 Difference]: Finished difference Result 55924 states and 93666 transitions. [2022-02-10 02:46:20,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-10 02:46:20,138 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:20,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:20,435 INFO L225 Difference]: With dead ends: 55924 [2022-02-10 02:46:20,435 INFO L226 Difference]: Without dead ends: 55920 [2022-02-10 02:46:20,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1295 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1203, Invalid=2579, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 02:46:20,436 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 267 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:20,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 385 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:46:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55920 states. [2022-02-10 02:46:21,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55920 to 39291. [2022-02-10 02:46:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39291 states, 39290 states have (on average 1.6664036650547214) internal successors, (65473), 39290 states have internal predecessors, (65473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39291 states to 39291 states and 65473 transitions. [2022-02-10 02:46:21,316 INFO L78 Accepts]: Start accepts. Automaton has 39291 states and 65473 transitions. Word has length 45 [2022-02-10 02:46:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:21,316 INFO L470 AbstractCegarLoop]: Abstraction has 39291 states and 65473 transitions. [2022-02-10 02:46:21,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 39291 states and 65473 transitions. [2022-02-10 02:46:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 02:46:21,353 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:21,353 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:21,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-10 02:46:21,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:21,554 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:21,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1028157031, now seen corresponding path program 60 times [2022-02-10 02:46:21,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:21,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444768371] [2022-02-10 02:46:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:21,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:21,618 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:21,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444768371] [2022-02-10 02:46:21,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444768371] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:21,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862420899] [2022-02-10 02:46:21,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:46:21,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:21,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:21,620 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:21,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-10 02:46:21,648 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:46:21,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:21,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:46:21,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:21,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:21,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862420899] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:21,898 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:21,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-02-10 02:46:21,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016544353] [2022-02-10 02:46:21,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:21,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:21,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:21,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:21,899 INFO L87 Difference]: Start difference. First operand 39291 states and 65473 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:22,628 INFO L93 Difference]: Finished difference Result 58062 states and 97606 transitions. [2022-02-10 02:46:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 02:46:22,628 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 02:46:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:22,756 INFO L225 Difference]: With dead ends: 58062 [2022-02-10 02:46:22,756 INFO L226 Difference]: Without dead ends: 58024 [2022-02-10 02:46:22,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=694, Invalid=1856, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:46:22,757 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 244 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:22,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 311 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:46:22,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58024 states. [2022-02-10 02:46:23,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58024 to 42758. [2022-02-10 02:46:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42758 states, 42757 states have (on average 1.6673059382089483) internal successors, (71289), 42757 states have internal predecessors, (71289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42758 states to 42758 states and 71289 transitions. [2022-02-10 02:46:23,834 INFO L78 Accepts]: Start accepts. Automaton has 42758 states and 71289 transitions. Word has length 45 [2022-02-10 02:46:23,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:23,835 INFO L470 AbstractCegarLoop]: Abstraction has 42758 states and 71289 transitions. [2022-02-10 02:46:23,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 42758 states and 71289 transitions. [2022-02-10 02:46:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:23,886 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:23,886 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:23,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-02-10 02:46:24,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:24,087 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:24,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:24,087 INFO L85 PathProgramCache]: Analyzing trace with hash 264299703, now seen corresponding path program 61 times [2022-02-10 02:46:24,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:24,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361500601] [2022-02-10 02:46:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:24,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:24,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:24,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361500601] [2022-02-10 02:46:24,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361500601] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:24,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145200945] [2022-02-10 02:46:24,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:46:24,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:24,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:24,311 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:24,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-10 02:46:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:24,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:24,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:24,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:46:24,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145200945] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:24,666 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:24,666 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:24,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127735882] [2022-02-10 02:46:24,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:24,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:24,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:24,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:24,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:24,667 INFO L87 Difference]: Start difference. First operand 42758 states and 71289 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:25,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:25,097 INFO L93 Difference]: Finished difference Result 46585 states and 77260 transitions. [2022-02-10 02:46:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:25,098 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:25,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:25,177 INFO L225 Difference]: With dead ends: 46585 [2022-02-10 02:46:25,178 INFO L226 Difference]: Without dead ends: 46571 [2022-02-10 02:46:25,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:25,178 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 71 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:25,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 1418 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46571 states. [2022-02-10 02:46:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46571 to 43894. [2022-02-10 02:46:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43894 states, 43893 states have (on average 1.6670084068074635) internal successors, (73170), 43893 states have internal predecessors, (73170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43894 states to 43894 states and 73170 transitions. [2022-02-10 02:46:26,091 INFO L78 Accepts]: Start accepts. Automaton has 43894 states and 73170 transitions. Word has length 48 [2022-02-10 02:46:26,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:26,091 INFO L470 AbstractCegarLoop]: Abstraction has 43894 states and 73170 transitions. [2022-02-10 02:46:26,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:26,091 INFO L276 IsEmpty]: Start isEmpty. Operand 43894 states and 73170 transitions. [2022-02-10 02:46:26,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:26,134 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:26,134 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:26,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-10 02:46:26,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-02-10 02:46:26,335 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:26,335 INFO L85 PathProgramCache]: Analyzing trace with hash -821005321, now seen corresponding path program 62 times [2022-02-10 02:46:26,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:26,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580788693] [2022-02-10 02:46:26,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:26,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:26,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:26,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580788693] [2022-02-10 02:46:26,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580788693] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:26,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662804832] [2022-02-10 02:46:26,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:46:26,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:26,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:26,534 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:26,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-10 02:46:26,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:46:26,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:26,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:26,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:26,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:26,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662804832] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:26,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:26,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:26,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561330502] [2022-02-10 02:46:26,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:26,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:26,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:26,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:26,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:26,855 INFO L87 Difference]: Start difference. First operand 43894 states and 73170 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:27,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:27,458 INFO L93 Difference]: Finished difference Result 47187 states and 78267 transitions. [2022-02-10 02:46:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:27,459 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:27,532 INFO L225 Difference]: With dead ends: 47187 [2022-02-10 02:46:27,532 INFO L226 Difference]: Without dead ends: 47173 [2022-02-10 02:46:27,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:27,533 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 62 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:27,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1351 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:27,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47173 states. [2022-02-10 02:46:28,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47173 to 45301. [2022-02-10 02:46:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45301 states, 45300 states have (on average 1.6671523178807948) internal successors, (75522), 45300 states have internal predecessors, (75522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:28,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45301 states to 45301 states and 75522 transitions. [2022-02-10 02:46:28,450 INFO L78 Accepts]: Start accepts. Automaton has 45301 states and 75522 transitions. Word has length 48 [2022-02-10 02:46:28,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:28,450 INFO L470 AbstractCegarLoop]: Abstraction has 45301 states and 75522 transitions. [2022-02-10 02:46:28,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:28,450 INFO L276 IsEmpty]: Start isEmpty. Operand 45301 states and 75522 transitions. [2022-02-10 02:46:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:28,500 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:28,500 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:28,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-02-10 02:46:28,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-02-10 02:46:28,701 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:28,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:28,701 INFO L85 PathProgramCache]: Analyzing trace with hash -644580403, now seen corresponding path program 63 times [2022-02-10 02:46:28,701 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:28,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416337523] [2022-02-10 02:46:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:28,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:28,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:28,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416337523] [2022-02-10 02:46:28,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416337523] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:28,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202804593] [2022-02-10 02:46:28,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:46:28,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:28,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:28,937 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:28,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-10 02:46:28,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:46:28,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:28,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:28,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:29,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:29,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202804593] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:29,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:29,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:29,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945744398] [2022-02-10 02:46:29,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:29,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:29,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:29,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:29,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:29,422 INFO L87 Difference]: Start difference. First operand 45301 states and 75522 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:29,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:29,855 INFO L93 Difference]: Finished difference Result 50909 states and 84575 transitions. [2022-02-10 02:46:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:29,856 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:29,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:30,013 INFO L225 Difference]: With dead ends: 50909 [2022-02-10 02:46:30,014 INFO L226 Difference]: Without dead ends: 50895 [2022-02-10 02:46:30,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:30,014 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 61 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:30,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 1334 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50895 states. [2022-02-10 02:46:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50895 to 47856. [2022-02-10 02:46:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47856 states, 47855 states have (on average 1.667474663044614) internal successors, (79797), 47855 states have internal predecessors, (79797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47856 states to 47856 states and 79797 transitions. [2022-02-10 02:46:31,110 INFO L78 Accepts]: Start accepts. Automaton has 47856 states and 79797 transitions. Word has length 48 [2022-02-10 02:46:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:31,110 INFO L470 AbstractCegarLoop]: Abstraction has 47856 states and 79797 transitions. [2022-02-10 02:46:31,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 47856 states and 79797 transitions. [2022-02-10 02:46:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:31,159 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:31,160 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:31,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-10 02:46:31,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:31,360 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:31,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:31,361 INFO L85 PathProgramCache]: Analyzing trace with hash 333535287, now seen corresponding path program 64 times [2022-02-10 02:46:31,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:31,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123395886] [2022-02-10 02:46:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:31,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:31,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:31,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123395886] [2022-02-10 02:46:31,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123395886] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:31,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141210682] [2022-02-10 02:46:31,574 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:46:31,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:31,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:31,575 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:31,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-10 02:46:31,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:46:31,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:31,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:31,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:31,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:31,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141210682] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:31,893 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:31,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:31,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515304513] [2022-02-10 02:46:31,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:31,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:31,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:31,894 INFO L87 Difference]: Start difference. First operand 47856 states and 79797 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:32,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:32,330 INFO L93 Difference]: Finished difference Result 54659 states and 90868 transitions. [2022-02-10 02:46:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:32,330 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:32,482 INFO L225 Difference]: With dead ends: 54659 [2022-02-10 02:46:32,482 INFO L226 Difference]: Without dead ends: 54645 [2022-02-10 02:46:32,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:32,483 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 60 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:32,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1317 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:32,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54645 states. [2022-02-10 02:46:33,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54645 to 51014. [2022-02-10 02:46:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51014 states, 51013 states have (on average 1.6676337404191088) internal successors, (85071), 51013 states have internal predecessors, (85071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51014 states to 51014 states and 85071 transitions. [2022-02-10 02:46:33,710 INFO L78 Accepts]: Start accepts. Automaton has 51014 states and 85071 transitions. Word has length 48 [2022-02-10 02:46:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:33,710 INFO L470 AbstractCegarLoop]: Abstraction has 51014 states and 85071 transitions. [2022-02-10 02:46:33,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 51014 states and 85071 transitions. [2022-02-10 02:46:33,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:33,763 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:33,764 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:33,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-10 02:46:33,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-10 02:46:33,964 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:33,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1317705229, now seen corresponding path program 65 times [2022-02-10 02:46:33,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:33,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221955142] [2022-02-10 02:46:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:33,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:34,149 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:34,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221955142] [2022-02-10 02:46:34,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221955142] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:34,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923199173] [2022-02-10 02:46:34,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:46:34,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:34,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:34,151 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:34,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-10 02:46:34,174 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:46:34,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:34,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:34,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:34,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:34,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923199173] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:34,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:34,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:34,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721702233] [2022-02-10 02:46:34,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:34,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:34,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:34,642 INFO L87 Difference]: Start difference. First operand 51014 states and 85071 transitions. Second operand has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:35,105 INFO L93 Difference]: Finished difference Result 59991 states and 99774 transitions. [2022-02-10 02:46:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:35,106 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:35,219 INFO L225 Difference]: With dead ends: 59991 [2022-02-10 02:46:35,219 INFO L226 Difference]: Without dead ends: 59971 [2022-02-10 02:46:35,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:35,220 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 68 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:35,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 1366 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:35,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59971 states. [2022-02-10 02:46:36,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59971 to 54653. [2022-02-10 02:46:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54653 states, 54652 states have (on average 1.6674412647295616) internal successors, (91129), 54652 states have internal predecessors, (91129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54653 states to 54653 states and 91129 transitions. [2022-02-10 02:46:36,425 INFO L78 Accepts]: Start accepts. Automaton has 54653 states and 91129 transitions. Word has length 48 [2022-02-10 02:46:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:36,426 INFO L470 AbstractCegarLoop]: Abstraction has 54653 states and 91129 transitions. [2022-02-10 02:46:36,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand 54653 states and 91129 transitions. [2022-02-10 02:46:36,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:36,475 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:36,475 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:36,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-10 02:46:36,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-10 02:46:36,676 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1087070583, now seen corresponding path program 66 times [2022-02-10 02:46:36,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:36,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838426474] [2022-02-10 02:46:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:36,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:36,904 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:36,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838426474] [2022-02-10 02:46:36,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838426474] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:36,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573945263] [2022-02-10 02:46:36,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:46:36,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:36,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:36,906 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:36,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-10 02:46:36,934 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:46:36,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:36,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:36,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:37,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:37,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573945263] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:37,324 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:37,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:37,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926604147] [2022-02-10 02:46:37,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:37,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:37,325 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:37,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:37,325 INFO L87 Difference]: Start difference. First operand 54653 states and 91129 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:38,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:38,120 INFO L93 Difference]: Finished difference Result 59930 states and 99622 transitions. [2022-02-10 02:46:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:38,121 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:38,296 INFO L225 Difference]: With dead ends: 59930 [2022-02-10 02:46:38,296 INFO L226 Difference]: Without dead ends: 59910 [2022-02-10 02:46:38,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:38,297 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 58 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:38,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 1264 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:38,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59910 states. [2022-02-10 02:46:39,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59910 to 57868. [2022-02-10 02:46:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57868 states, 57867 states have (on average 1.6673579069244993) internal successors, (96485), 57867 states have internal predecessors, (96485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:39,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57868 states to 57868 states and 96485 transitions. [2022-02-10 02:46:39,478 INFO L78 Accepts]: Start accepts. Automaton has 57868 states and 96485 transitions. Word has length 48 [2022-02-10 02:46:39,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:39,478 INFO L470 AbstractCegarLoop]: Abstraction has 57868 states and 96485 transitions. [2022-02-10 02:46:39,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:39,478 INFO L276 IsEmpty]: Start isEmpty. Operand 57868 states and 96485 transitions. [2022-02-10 02:46:39,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:39,526 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:39,526 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:39,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-10 02:46:39,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:39,727 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:39,727 INFO L85 PathProgramCache]: Analyzing trace with hash -597446451, now seen corresponding path program 67 times [2022-02-10 02:46:39,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:39,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59224566] [2022-02-10 02:46:39,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:39,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:39,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:39,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59224566] [2022-02-10 02:46:39,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59224566] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:39,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419405780] [2022-02-10 02:46:39,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:46:39,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:39,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:39,956 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:39,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-10 02:46:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:39,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:39,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:40,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:40,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419405780] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:40,365 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:40,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:40,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582040222] [2022-02-10 02:46:40,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:40,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:40,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:40,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:40,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:40,366 INFO L87 Difference]: Start difference. First operand 57868 states and 96485 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:40,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:40,837 INFO L93 Difference]: Finished difference Result 66069 states and 109939 transitions. [2022-02-10 02:46:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:40,838 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:40,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:40,973 INFO L225 Difference]: With dead ends: 66069 [2022-02-10 02:46:40,974 INFO L226 Difference]: Without dead ends: 66049 [2022-02-10 02:46:40,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:40,974 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 57 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:40,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 1247 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66049 states. [2022-02-10 02:46:42,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66049 to 62948. [2022-02-10 02:46:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62948 states, 62947 states have (on average 1.6678793270529175) internal successors, (104988), 62947 states have internal predecessors, (104988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62948 states to 62948 states and 104988 transitions. [2022-02-10 02:46:42,521 INFO L78 Accepts]: Start accepts. Automaton has 62948 states and 104988 transitions. Word has length 48 [2022-02-10 02:46:42,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:42,521 INFO L470 AbstractCegarLoop]: Abstraction has 62948 states and 104988 transitions. [2022-02-10 02:46:42,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:42,521 INFO L276 IsEmpty]: Start isEmpty. Operand 62948 states and 104988 transitions. [2022-02-10 02:46:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:42,564 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:42,564 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:42,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-02-10 02:46:42,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2022-02-10 02:46:42,765 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:42,765 INFO L85 PathProgramCache]: Analyzing trace with hash -269478473, now seen corresponding path program 68 times [2022-02-10 02:46:42,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:42,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459704267] [2022-02-10 02:46:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:42,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:42,972 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:42,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459704267] [2022-02-10 02:46:42,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459704267] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:42,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845468913] [2022-02-10 02:46:42,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:46:42,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:42,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:42,973 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:42,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-10 02:46:42,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:46:42,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:42,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:42,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:43,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:43,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845468913] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:43,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:43,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:43,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376671833] [2022-02-10 02:46:43,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:43,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:43,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:43,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:43,286 INFO L87 Difference]: Start difference. First operand 62948 states and 104988 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:43,785 INFO L93 Difference]: Finished difference Result 72147 states and 120113 transitions. [2022-02-10 02:46:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:43,785 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:43,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:43,935 INFO L225 Difference]: With dead ends: 72147 [2022-02-10 02:46:43,935 INFO L226 Difference]: Without dead ends: 72127 [2022-02-10 02:46:44,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:44,179 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 56 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:44,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 1230 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:44,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72127 states. [2022-02-10 02:46:45,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72127 to 68636. [2022-02-10 02:46:45,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68636 states, 68635 states have (on average 1.6681430756902456) internal successors, (114493), 68635 states have internal predecessors, (114493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:45,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68636 states to 68636 states and 114493 transitions. [2022-02-10 02:46:45,564 INFO L78 Accepts]: Start accepts. Automaton has 68636 states and 114493 transitions. Word has length 48 [2022-02-10 02:46:45,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:45,564 INFO L470 AbstractCegarLoop]: Abstraction has 68636 states and 114493 transitions. [2022-02-10 02:46:45,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 68636 states and 114493 transitions. [2022-02-10 02:46:45,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:45,611 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:45,611 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:45,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:45,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:45,824 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:45,825 INFO L85 PathProgramCache]: Analyzing trace with hash -596829427, now seen corresponding path program 69 times [2022-02-10 02:46:45,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:45,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422319666] [2022-02-10 02:46:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:45,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:46,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:46,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422319666] [2022-02-10 02:46:46,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422319666] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:46,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279104920] [2022-02-10 02:46:46,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:46:46,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:46,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:46,026 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:46,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-10 02:46:46,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:46:46,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:46,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:46,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:46,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:46:46,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279104920] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:46,358 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:46,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:46,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559539701] [2022-02-10 02:46:46,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:46,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:46,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:46,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:46,359 INFO L87 Difference]: Start difference. First operand 68636 states and 114493 transitions. Second operand has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:47,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:47,168 INFO L93 Difference]: Finished difference Result 79761 states and 132797 transitions. [2022-02-10 02:46:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:47,168 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:47,326 INFO L225 Difference]: With dead ends: 79761 [2022-02-10 02:46:47,326 INFO L226 Difference]: Without dead ends: 79735 [2022-02-10 02:46:47,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:47,326 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 64 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:47,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 1298 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79735 states. [2022-02-10 02:46:48,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79735 to 74794. [2022-02-10 02:46:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74794 states, 74793 states have (on average 1.6681106520663698) internal successors, (124763), 74793 states have internal predecessors, (124763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:48,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74794 states to 74794 states and 124763 transitions. [2022-02-10 02:46:48,877 INFO L78 Accepts]: Start accepts. Automaton has 74794 states and 124763 transitions. Word has length 48 [2022-02-10 02:46:48,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:48,877 INFO L470 AbstractCegarLoop]: Abstraction has 74794 states and 124763 transitions. [2022-02-10 02:46:48,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:48,878 INFO L276 IsEmpty]: Start isEmpty. Operand 74794 states and 124763 transitions. [2022-02-10 02:46:48,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:48,934 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:48,934 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:48,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:49,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:49,143 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:49,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:49,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1761726729, now seen corresponding path program 70 times [2022-02-10 02:46:49,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:49,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113383272] [2022-02-10 02:46:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:49,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:49,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:49,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113383272] [2022-02-10 02:46:49,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113383272] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:49,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311720132] [2022-02-10 02:46:49,631 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:46:49,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:49,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:49,632 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:49,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-10 02:46:49,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:46:49,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:49,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:49,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:49,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:49,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311720132] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:49,949 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:49,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:49,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640895152] [2022-02-10 02:46:49,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:49,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:49,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:49,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:49,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:49,950 INFO L87 Difference]: Start difference. First operand 74794 states and 124763 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:50,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:50,447 INFO L93 Difference]: Finished difference Result 79760 states and 132771 transitions. [2022-02-10 02:46:50,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:50,447 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:50,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:50,621 INFO L225 Difference]: With dead ends: 79760 [2022-02-10 02:46:50,621 INFO L226 Difference]: Without dead ends: 79738 [2022-02-10 02:46:50,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:50,622 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 54 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:50,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1196 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79738 states. [2022-02-10 02:46:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79738 to 78439. [2022-02-10 02:46:52,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78439 states, 78438 states have (on average 1.6672786149570362) internal successors, (130778), 78438 states have internal predecessors, (130778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78439 states to 78439 states and 130778 transitions. [2022-02-10 02:46:52,518 INFO L78 Accepts]: Start accepts. Automaton has 78439 states and 130778 transitions. Word has length 48 [2022-02-10 02:46:52,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:52,518 INFO L470 AbstractCegarLoop]: Abstraction has 78439 states and 130778 transitions. [2022-02-10 02:46:52,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 78439 states and 130778 transitions. [2022-02-10 02:46:52,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:52,571 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:52,571 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:52,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:52,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:52,772 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:52,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:52,772 INFO L85 PathProgramCache]: Analyzing trace with hash -231266867, now seen corresponding path program 71 times [2022-02-10 02:46:52,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:52,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661565544] [2022-02-10 02:46:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:52,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:53,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:53,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661565544] [2022-02-10 02:46:53,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661565544] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:53,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078244038] [2022-02-10 02:46:53,005 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:46:53,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:53,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:53,007 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:53,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-10 02:46:53,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 02:46:53,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:53,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:53,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:53,211 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:53,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:53,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078244038] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:53,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:53,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:53,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098528403] [2022-02-10 02:46:53,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:53,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:53,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:53,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:53,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:53,354 INFO L87 Difference]: Start difference. First operand 78439 states and 130778 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:54,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:54,150 INFO L93 Difference]: Finished difference Result 86039 states and 143192 transitions. [2022-02-10 02:46:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:54,151 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:54,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:54,342 INFO L225 Difference]: With dead ends: 86039 [2022-02-10 02:46:54,342 INFO L226 Difference]: Without dead ends: 86017 [2022-02-10 02:46:54,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:54,343 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 53 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:54,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1179 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86017 states. [2022-02-10 02:46:55,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86017 to 84078. [2022-02-10 02:46:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84078 states, 84077 states have (on average 1.6662345231157154) internal successors, (140092), 84077 states have internal predecessors, (140092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:56,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84078 states to 84078 states and 140092 transitions. [2022-02-10 02:46:56,351 INFO L78 Accepts]: Start accepts. Automaton has 84078 states and 140092 transitions. Word has length 48 [2022-02-10 02:46:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:46:56,351 INFO L470 AbstractCegarLoop]: Abstraction has 84078 states and 140092 transitions. [2022-02-10 02:46:56,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 84078 states and 140092 transitions. [2022-02-10 02:46:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:46:56,409 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:46:56,410 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:46:56,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-10 02:46:56,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-02-10 02:46:56,631 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:46:56,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:46:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1985655607, now seen corresponding path program 72 times [2022-02-10 02:46:56,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:46:56,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109721452] [2022-02-10 02:46:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:46:56,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:46:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:46:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:56,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:46:56,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109721452] [2022-02-10 02:46:56,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109721452] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:46:56,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349898681] [2022-02-10 02:46:56,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:46:56,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:46:56,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:46:56,865 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:46:56,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-10 02:46:56,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:46:56,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:46:56,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:46:56,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:46:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:57,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:46:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:46:57,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349898681] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:46:57,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:46:57,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:46:57,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130963139] [2022-02-10 02:46:57,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:46:57,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:46:57,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:46:57,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:46:57,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:57,195 INFO L87 Difference]: Start difference. First operand 84078 states and 140092 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:46:58,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:46:58,045 INFO L93 Difference]: Finished difference Result 92616 states and 154069 transitions. [2022-02-10 02:46:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:46:58,045 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:46:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:46:58,279 INFO L225 Difference]: With dead ends: 92616 [2022-02-10 02:46:58,279 INFO L226 Difference]: Without dead ends: 92594 [2022-02-10 02:46:58,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:46:58,279 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 52 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:46:58,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1162 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:46:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92594 states. [2022-02-10 02:47:00,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92594 to 90494. [2022-02-10 02:47:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90494 states, 90493 states have (on average 1.6652337749881205) internal successors, (150692), 90493 states have internal predecessors, (150692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90494 states to 90494 states and 150692 transitions. [2022-02-10 02:47:00,566 INFO L78 Accepts]: Start accepts. Automaton has 90494 states and 150692 transitions. Word has length 48 [2022-02-10 02:47:00,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:00,566 INFO L470 AbstractCegarLoop]: Abstraction has 90494 states and 150692 transitions. [2022-02-10 02:47:00,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:00,566 INFO L276 IsEmpty]: Start isEmpty. Operand 90494 states and 150692 transitions. [2022-02-10 02:47:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:47:00,629 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:00,629 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:00,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:00,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:00,830 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:00,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1785208819, now seen corresponding path program 73 times [2022-02-10 02:47:00,831 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:00,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840928810] [2022-02-10 02:47:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:00,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:47:01,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:01,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840928810] [2022-02-10 02:47:01,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840928810] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:01,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559368064] [2022-02-10 02:47:01,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:47:01,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:01,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:01,054 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:01,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-10 02:47:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:01,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:47:01,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:47:01,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:47:01,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559368064] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:01,442 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:01,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:47:01,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111845321] [2022-02-10 02:47:01,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:01,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:47:01,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:01,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:47:01,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:01,443 INFO L87 Difference]: Start difference. First operand 90494 states and 150692 transitions. Second operand has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:02,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:02,396 INFO L93 Difference]: Finished difference Result 100450 states and 166970 transitions. [2022-02-10 02:47:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:47:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:47:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:02,660 INFO L225 Difference]: With dead ends: 100450 [2022-02-10 02:47:02,661 INFO L226 Difference]: Without dead ends: 100422 [2022-02-10 02:47:02,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:02,661 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 60 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:02,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1230 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:02,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100422 states. [2022-02-10 02:47:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100422 to 97502. [2022-02-10 02:47:04,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97502 states, 97501 states have (on average 1.6642393411349627) internal successors, (162265), 97501 states have internal predecessors, (162265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97502 states to 97502 states and 162265 transitions. [2022-02-10 02:47:04,778 INFO L78 Accepts]: Start accepts. Automaton has 97502 states and 162265 transitions. Word has length 48 [2022-02-10 02:47:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:04,778 INFO L470 AbstractCegarLoop]: Abstraction has 97502 states and 162265 transitions. [2022-02-10 02:47:04,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 97502 states and 162265 transitions. [2022-02-10 02:47:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:47:04,843 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:04,843 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:04,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:05,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:05,044 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:05,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:05,044 INFO L85 PathProgramCache]: Analyzing trace with hash -801055625, now seen corresponding path program 74 times [2022-02-10 02:47:05,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:05,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337967494] [2022-02-10 02:47:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:05,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:47:05,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:05,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337967494] [2022-02-10 02:47:05,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337967494] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:05,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466141340] [2022-02-10 02:47:05,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:47:05,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:05,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:05,273 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:05,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-10 02:47:05,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:47:05,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:05,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:47:05,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:47:05,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:47:05,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466141340] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:05,589 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:05,589 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:47:05,589 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992851028] [2022-02-10 02:47:05,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:05,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:47:05,590 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:05,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:47:05,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:05,590 INFO L87 Difference]: Start difference. First operand 97502 states and 162265 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:06,511 INFO L93 Difference]: Finished difference Result 100505 states and 167024 transitions. [2022-02-10 02:47:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:47:06,512 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:47:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:06,785 INFO L225 Difference]: With dead ends: 100505 [2022-02-10 02:47:06,785 INFO L226 Difference]: Without dead ends: 100481 [2022-02-10 02:47:06,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:06,786 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 50 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:06,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1146 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 02:47:06,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100481 states. [2022-02-10 02:47:08,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100481 to 100241. [2022-02-10 02:47:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100241 states, 100240 states have (on average 1.6634078212290502) internal successors, (166740), 100240 states have internal predecessors, (166740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100241 states to 100241 states and 166740 transitions. [2022-02-10 02:47:09,462 INFO L78 Accepts]: Start accepts. Automaton has 100241 states and 166740 transitions. Word has length 48 [2022-02-10 02:47:09,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:09,462 INFO L470 AbstractCegarLoop]: Abstraction has 100241 states and 166740 transitions. [2022-02-10 02:47:09,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:09,462 INFO L276 IsEmpty]: Start isEmpty. Operand 100241 states and 166740 transitions. [2022-02-10 02:47:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:47:09,553 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:09,553 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:09,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:09,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-02-10 02:47:09,754 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:09,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:09,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1457445581, now seen corresponding path program 75 times [2022-02-10 02:47:09,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:09,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112494828] [2022-02-10 02:47:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:09,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:47:09,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:09,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112494828] [2022-02-10 02:47:09,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112494828] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:09,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36507008] [2022-02-10 02:47:09,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:47:09,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:09,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:09,978 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:09,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-10 02:47:10,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:47:10,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:10,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:47:10,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:47:10,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:47:10,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36507008] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:10,293 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:10,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:47:10,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680722769] [2022-02-10 02:47:10,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:10,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:47:10,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:10,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:47:10,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:10,294 INFO L87 Difference]: Start difference. First operand 100241 states and 166740 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:10,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:10,932 INFO L93 Difference]: Finished difference Result 104793 states and 174099 transitions. [2022-02-10 02:47:10,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:47:10,933 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:47:10,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:11,532 INFO L225 Difference]: With dead ends: 104793 [2022-02-10 02:47:11,532 INFO L226 Difference]: Without dead ends: 104769 [2022-02-10 02:47:11,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:11,532 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 49 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:11,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1130 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104769 states. [2022-02-10 02:47:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104769 to 104535. [2022-02-10 02:47:13,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104535 states, 104534 states have (on average 1.6628178391719441) internal successors, (173821), 104534 states have internal predecessors, (173821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104535 states to 104535 states and 173821 transitions. [2022-02-10 02:47:13,790 INFO L78 Accepts]: Start accepts. Automaton has 104535 states and 173821 transitions. Word has length 48 [2022-02-10 02:47:13,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:13,790 INFO L470 AbstractCegarLoop]: Abstraction has 104535 states and 173821 transitions. [2022-02-10 02:47:13,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 104535 states and 173821 transitions. [2022-02-10 02:47:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:47:13,874 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:13,875 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:13,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:14,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-02-10 02:47:14,075 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1430703945, now seen corresponding path program 76 times [2022-02-10 02:47:14,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:14,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830524818] [2022-02-10 02:47:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:14,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:47:14,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:14,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830524818] [2022-02-10 02:47:14,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830524818] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:14,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147293904] [2022-02-10 02:47:14,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:47:14,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:14,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:14,315 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:14,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-10 02:47:14,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:47:14,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:14,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:47:14,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:47:14,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:47:15,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147293904] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:15,097 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:15,097 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:47:15,097 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992216336] [2022-02-10 02:47:15,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:15,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:47:15,097 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:15,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:47:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:15,098 INFO L87 Difference]: Start difference. First operand 104535 states and 173821 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:15,781 INFO L93 Difference]: Finished difference Result 109583 states and 182001 transitions. [2022-02-10 02:47:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:47:15,782 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:47:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:16,038 INFO L225 Difference]: With dead ends: 109583 [2022-02-10 02:47:16,038 INFO L226 Difference]: Without dead ends: 109559 [2022-02-10 02:47:16,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:16,039 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 48 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:16,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1114 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109559 states. [2022-02-10 02:47:18,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109559 to 109331. [2022-02-10 02:47:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109331 states, 109330 states have (on average 1.6622061648220983) internal successors, (181729), 109330 states have internal predecessors, (181729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:18,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109331 states to 109331 states and 181729 transitions. [2022-02-10 02:47:18,859 INFO L78 Accepts]: Start accepts. Automaton has 109331 states and 181729 transitions. Word has length 48 [2022-02-10 02:47:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:18,859 INFO L470 AbstractCegarLoop]: Abstraction has 109331 states and 181729 transitions. [2022-02-10 02:47:18,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 109331 states and 181729 transitions. [2022-02-10 02:47:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-10 02:47:18,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:18,957 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:18,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-02-10 02:47:19,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:19,158 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:19,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1926948109, now seen corresponding path program 77 times [2022-02-10 02:47:19,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:19,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804027214] [2022-02-10 02:47:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:19,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:47:19,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:19,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804027214] [2022-02-10 02:47:19,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804027214] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:19,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755394724] [2022-02-10 02:47:19,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:47:19,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:19,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:19,353 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:19,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-10 02:47:19,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:47:19,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:19,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 43 conjunts are in the unsatisfiable core [2022-02-10 02:47:19,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:47:19,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:47:19,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755394724] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:19,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:19,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-02-10 02:47:19,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746616462] [2022-02-10 02:47:19,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:19,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:47:19,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:47:19,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:19,670 INFO L87 Difference]: Start difference. First operand 109331 states and 181729 transitions. Second operand has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:20,771 INFO L93 Difference]: Finished difference Result 114936 states and 190809 transitions. [2022-02-10 02:47:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:47:20,771 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-10 02:47:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:21,076 INFO L225 Difference]: With dead ends: 114936 [2022-02-10 02:47:21,076 INFO L226 Difference]: Without dead ends: 114912 [2022-02-10 02:47:21,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:21,077 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 56 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:21,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 1169 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:47:21,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114912 states. [2022-02-10 02:47:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114912 to 114667. [2022-02-10 02:47:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114667 states, 114666 states have (on average 1.6615212879144645) internal successors, (190520), 114666 states have internal predecessors, (190520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:23,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114667 states to 114667 states and 190520 transitions. [2022-02-10 02:47:23,962 INFO L78 Accepts]: Start accepts. Automaton has 114667 states and 190520 transitions. Word has length 48 [2022-02-10 02:47:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:23,962 INFO L470 AbstractCegarLoop]: Abstraction has 114667 states and 190520 transitions. [2022-02-10 02:47:23,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 114667 states and 190520 transitions. [2022-02-10 02:47:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:47:24,080 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:24,080 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:24,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:24,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:24,281 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1703764221, now seen corresponding path program 78 times [2022-02-10 02:47:24,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:24,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162060885] [2022-02-10 02:47:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:24,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 35 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:24,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:24,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162060885] [2022-02-10 02:47:24,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162060885] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:24,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107757678] [2022-02-10 02:47:24,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:47:24,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:24,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:24,347 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:24,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-10 02:47:24,370 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:47:24,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:24,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:47:24,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 35 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:24,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 35 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:24,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107757678] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:24,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:24,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2022-02-10 02:47:24,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665048161] [2022-02-10 02:47:24,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:24,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:47:24,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:24,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:47:24,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:47:24,584 INFO L87 Difference]: Start difference. First operand 114667 states and 190520 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:25,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:25,681 INFO L93 Difference]: Finished difference Result 160388 states and 263948 transitions. [2022-02-10 02:47:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 02:47:25,682 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:47:25,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:26,127 INFO L225 Difference]: With dead ends: 160388 [2022-02-10 02:47:26,127 INFO L226 Difference]: Without dead ends: 160373 [2022-02-10 02:47:26,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=645, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:47:26,128 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 163 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:26,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 191 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:47:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160373 states. [2022-02-10 02:47:28,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160373 to 114664. [2022-02-10 02:47:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114664 states, 114663 states have (on average 1.661529874501801) internal successors, (190516), 114663 states have internal predecessors, (190516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114664 states to 114664 states and 190516 transitions. [2022-02-10 02:47:29,673 INFO L78 Accepts]: Start accepts. Automaton has 114664 states and 190516 transitions. Word has length 51 [2022-02-10 02:47:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:29,673 INFO L470 AbstractCegarLoop]: Abstraction has 114664 states and 190516 transitions. [2022-02-10 02:47:29,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:29,674 INFO L276 IsEmpty]: Start isEmpty. Operand 114664 states and 190516 transitions. [2022-02-10 02:47:29,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:47:29,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:29,778 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:29,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:29,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-02-10 02:47:29,978 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:29,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:29,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1742556999, now seen corresponding path program 79 times [2022-02-10 02:47:29,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:29,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642213592] [2022-02-10 02:47:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:29,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:30,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:30,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642213592] [2022-02-10 02:47:30,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642213592] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:30,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985361075] [2022-02-10 02:47:30,058 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:47:30,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:30,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:30,060 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:30,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-10 02:47:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:30,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:47:30,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:30,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:30,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985361075] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:30,341 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:30,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:47:30,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31076256] [2022-02-10 02:47:30,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:30,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:47:30,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:47:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:30,342 INFO L87 Difference]: Start difference. First operand 114664 states and 190516 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:32,226 INFO L93 Difference]: Finished difference Result 196206 states and 321576 transitions. [2022-02-10 02:47:32,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 02:47:32,227 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:47:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:32,758 INFO L225 Difference]: With dead ends: 196206 [2022-02-10 02:47:32,758 INFO L226 Difference]: Without dead ends: 196192 [2022-02-10 02:47:32,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1935 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1550, Invalid=4000, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 02:47:32,759 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 531 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:32,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 417 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:47:33,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196192 states. [2022-02-10 02:47:36,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196192 to 132147. [2022-02-10 02:47:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132147 states, 132146 states have (on average 1.65224070346435) internal successors, (218337), 132146 states have internal predecessors, (218337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:37,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132147 states to 132147 states and 218337 transitions. [2022-02-10 02:47:37,064 INFO L78 Accepts]: Start accepts. Automaton has 132147 states and 218337 transitions. Word has length 51 [2022-02-10 02:47:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:37,064 INFO L470 AbstractCegarLoop]: Abstraction has 132147 states and 218337 transitions. [2022-02-10 02:47:37,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:37,065 INFO L276 IsEmpty]: Start isEmpty. Operand 132147 states and 218337 transitions. [2022-02-10 02:47:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:47:37,185 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:37,185 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:37,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-10 02:47:37,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:37,385 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:37,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:37,386 INFO L85 PathProgramCache]: Analyzing trace with hash 89649671, now seen corresponding path program 80 times [2022-02-10 02:47:37,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:37,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747120783] [2022-02-10 02:47:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:37,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:37,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:37,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747120783] [2022-02-10 02:47:37,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747120783] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:37,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990839558] [2022-02-10 02:47:37,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:47:37,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:37,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:37,445 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:37,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-10 02:47:37,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:47:37,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:37,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:47:37,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:37,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:37,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990839558] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:37,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:37,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:47:37,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388747331] [2022-02-10 02:47:37,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:37,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:47:37,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:37,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:47:37,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:37,702 INFO L87 Difference]: Start difference. First operand 132147 states and 218337 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:39,124 INFO L93 Difference]: Finished difference Result 181342 states and 297510 transitions. [2022-02-10 02:47:39,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 02:47:39,124 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:47:39,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:39,625 INFO L225 Difference]: With dead ends: 181342 [2022-02-10 02:47:39,626 INFO L226 Difference]: Without dead ends: 181333 [2022-02-10 02:47:39,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=560, Invalid=1510, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 02:47:39,626 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 420 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:39,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 350 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:47:39,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181333 states. [2022-02-10 02:47:43,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181333 to 144785. [2022-02-10 02:47:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144785 states, 144784 states have (on average 1.6563363355066858) internal successors, (239811), 144784 states have internal predecessors, (239811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144785 states to 144785 states and 239811 transitions. [2022-02-10 02:47:44,050 INFO L78 Accepts]: Start accepts. Automaton has 144785 states and 239811 transitions. Word has length 51 [2022-02-10 02:47:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:44,050 INFO L470 AbstractCegarLoop]: Abstraction has 144785 states and 239811 transitions. [2022-02-10 02:47:44,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 144785 states and 239811 transitions. [2022-02-10 02:47:44,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:47:44,168 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:44,168 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:44,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:44,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:44,369 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:44,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:44,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1725032771, now seen corresponding path program 81 times [2022-02-10 02:47:44,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:44,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799769224] [2022-02-10 02:47:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:44,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:44,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:44,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799769224] [2022-02-10 02:47:44,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799769224] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:44,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405178625] [2022-02-10 02:47:44,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:47:44,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:44,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:44,426 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:44,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-10 02:47:44,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-10 02:47:44,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:44,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:47:44,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:44,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:44,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405178625] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:44,719 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:44,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:47:44,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798995053] [2022-02-10 02:47:44,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:44,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:47:44,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:44,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:47:44,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:44,720 INFO L87 Difference]: Start difference. First operand 144785 states and 239811 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:46,450 INFO L93 Difference]: Finished difference Result 195912 states and 320650 transitions. [2022-02-10 02:47:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 02:47:46,450 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:47:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:47,303 INFO L225 Difference]: With dead ends: 195912 [2022-02-10 02:47:47,303 INFO L226 Difference]: Without dead ends: 195901 [2022-02-10 02:47:47,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=457, Invalid=1349, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 02:47:47,304 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 345 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:47,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 340 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:47:47,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195901 states. [2022-02-10 02:47:51,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195901 to 147135. [2022-02-10 02:47:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147135 states, 147134 states have (on average 1.6573259749615996) internal successors, (243849), 147134 states have internal predecessors, (243849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147135 states to 147135 states and 243849 transitions. [2022-02-10 02:47:51,628 INFO L78 Accepts]: Start accepts. Automaton has 147135 states and 243849 transitions. Word has length 51 [2022-02-10 02:47:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:51,628 INFO L470 AbstractCegarLoop]: Abstraction has 147135 states and 243849 transitions. [2022-02-10 02:47:51,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:51,628 INFO L276 IsEmpty]: Start isEmpty. Operand 147135 states and 243849 transitions. [2022-02-10 02:47:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:47:51,751 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:51,751 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:51,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:51,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2022-02-10 02:47:51,953 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:51,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash -686040953, now seen corresponding path program 82 times [2022-02-10 02:47:51,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:51,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316054628] [2022-02-10 02:47:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:51,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 23 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:52,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:52,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316054628] [2022-02-10 02:47:52,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316054628] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:52,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161000370] [2022-02-10 02:47:52,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:47:52,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:52,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:52,020 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:52,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-10 02:47:52,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:47:52,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:52,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:47:52,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 23 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:52,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 23 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:52,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161000370] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:52,265 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:52,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:47:52,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200794521] [2022-02-10 02:47:52,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:52,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:47:52,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:52,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:47:52,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:52,266 INFO L87 Difference]: Start difference. First operand 147135 states and 243849 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:47:53,745 INFO L93 Difference]: Finished difference Result 206832 states and 339920 transitions. [2022-02-10 02:47:53,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 02:47:53,746 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:47:53,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:47:54,321 INFO L225 Difference]: With dead ends: 206832 [2022-02-10 02:47:54,321 INFO L226 Difference]: Without dead ends: 206818 [2022-02-10 02:47:54,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:47:54,322 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 277 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:47:54,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 307 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:47:54,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206818 states. [2022-02-10 02:47:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206818 to 148070. [2022-02-10 02:47:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148070 states, 148069 states have (on average 1.6579770242251923) internal successors, (245495), 148069 states have internal predecessors, (245495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148070 states to 148070 states and 245495 transitions. [2022-02-10 02:47:59,140 INFO L78 Accepts]: Start accepts. Automaton has 148070 states and 245495 transitions. Word has length 51 [2022-02-10 02:47:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:47:59,140 INFO L470 AbstractCegarLoop]: Abstraction has 148070 states and 245495 transitions. [2022-02-10 02:47:59,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:47:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 148070 states and 245495 transitions. [2022-02-10 02:47:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 02:47:59,252 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:47:59,252 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:47:59,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-02-10 02:47:59,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:59,452 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:47:59,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:47:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash 49705667, now seen corresponding path program 83 times [2022-02-10 02:47:59,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:47:59,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575442871] [2022-02-10 02:47:59,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:47:59,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:47:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:47:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 31 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:59,520 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:47:59,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575442871] [2022-02-10 02:47:59,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575442871] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:47:59,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325088136] [2022-02-10 02:47:59,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:47:59,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:47:59,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:47:59,522 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:47:59,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-10 02:47:59,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:47:59,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:47:59,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:47:59,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:47:59,703 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 31 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:59,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:47:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 31 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:47:59,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325088136] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:47:59,780 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:47:59,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:47:59,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780777932] [2022-02-10 02:47:59,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:47:59,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:47:59,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:47:59,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:47:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:47:59,781 INFO L87 Difference]: Start difference. First operand 148070 states and 245495 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:01,041 INFO L93 Difference]: Finished difference Result 173003 states and 282815 transitions. [2022-02-10 02:48:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 02:48:01,042 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-10 02:48:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:01,493 INFO L225 Difference]: With dead ends: 173003 [2022-02-10 02:48:01,494 INFO L226 Difference]: Without dead ends: 172989 [2022-02-10 02:48:01,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:48:01,494 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 273 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:01,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 181 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:01,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172989 states. [2022-02-10 02:48:04,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172989 to 148066. [2022-02-10 02:48:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148066 states, 148065 states have (on average 1.6577989396548813) internal successors, (245462), 148065 states have internal predecessors, (245462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:05,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148066 states to 148066 states and 245462 transitions. [2022-02-10 02:48:05,290 INFO L78 Accepts]: Start accepts. Automaton has 148066 states and 245462 transitions. Word has length 51 [2022-02-10 02:48:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:05,290 INFO L470 AbstractCegarLoop]: Abstraction has 148066 states and 245462 transitions. [2022-02-10 02:48:05,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:05,290 INFO L276 IsEmpty]: Start isEmpty. Operand 148066 states and 245462 transitions. [2022-02-10 02:48:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-10 02:48:05,914 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:05,914 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:05,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:06,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:06,115 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:06,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:06,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1903337765, now seen corresponding path program 84 times [2022-02-10 02:48:06,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:06,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487231960] [2022-02-10 02:48:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:06,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:06,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:06,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487231960] [2022-02-10 02:48:06,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487231960] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:06,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298781377] [2022-02-10 02:48:06,177 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:06,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:06,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:06,178 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:06,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-10 02:48:06,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:48:06,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:06,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:48:06,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:06,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:06,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298781377] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:06,424 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:06,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2022-02-10 02:48:06,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008155246] [2022-02-10 02:48:06,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:06,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 02:48:06,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:06,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 02:48:06,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:48:06,425 INFO L87 Difference]: Start difference. First operand 148066 states and 245462 transitions. Second operand has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:07,176 INFO L93 Difference]: Finished difference Result 154594 states and 255821 transitions. [2022-02-10 02:48:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:48:07,176 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-02-10 02:48:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:07,987 INFO L225 Difference]: With dead ends: 154594 [2022-02-10 02:48:07,987 INFO L226 Difference]: Without dead ends: 154586 [2022-02-10 02:48:07,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2022-02-10 02:48:07,988 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 186 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:07,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 473 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:48:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154586 states. [2022-02-10 02:48:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154586 to 148897. [2022-02-10 02:48:10,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148897 states, 148896 states have (on average 1.6575126262626263) internal successors, (246797), 148896 states have internal predecessors, (246797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148897 states to 148897 states and 246797 transitions. [2022-02-10 02:48:11,597 INFO L78 Accepts]: Start accepts. Automaton has 148897 states and 246797 transitions. Word has length 54 [2022-02-10 02:48:11,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:11,597 INFO L470 AbstractCegarLoop]: Abstraction has 148897 states and 246797 transitions. [2022-02-10 02:48:11,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:11,597 INFO L276 IsEmpty]: Start isEmpty. Operand 148897 states and 246797 transitions. [2022-02-10 02:48:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-10 02:48:11,749 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:11,749 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:11,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:11,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-02-10 02:48:11,950 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:11,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:11,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1346586789, now seen corresponding path program 85 times [2022-02-10 02:48:11,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:11,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964353274] [2022-02-10 02:48:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:11,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 61 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:12,012 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:12,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964353274] [2022-02-10 02:48:12,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964353274] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:12,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842364529] [2022-02-10 02:48:12,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:12,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:12,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:12,013 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:12,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-10 02:48:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:12,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:48:12,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:12,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 61 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:12,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842364529] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:12,273 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:12,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:48:12,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696695309] [2022-02-10 02:48:12,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:12,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:48:12,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:12,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:48:12,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:12,275 INFO L87 Difference]: Start difference. First operand 148897 states and 246797 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:13,898 INFO L93 Difference]: Finished difference Result 153776 states and 254676 transitions. [2022-02-10 02:48:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 02:48:13,899 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-02-10 02:48:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:14,304 INFO L225 Difference]: With dead ends: 153776 [2022-02-10 02:48:14,304 INFO L226 Difference]: Without dead ends: 153774 [2022-02-10 02:48:14,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1591, Invalid=3101, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:48:14,305 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 327 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:14,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 508 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:14,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153774 states. [2022-02-10 02:48:17,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153774 to 141961. [2022-02-10 02:48:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141961 states, 141960 states have (on average 1.6568822203437588) internal successors, (235211), 141960 states have internal predecessors, (235211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141961 states to 141961 states and 235211 transitions. [2022-02-10 02:48:18,355 INFO L78 Accepts]: Start accepts. Automaton has 141961 states and 235211 transitions. Word has length 54 [2022-02-10 02:48:18,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:18,355 INFO L470 AbstractCegarLoop]: Abstraction has 141961 states and 235211 transitions. [2022-02-10 02:48:18,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:18,355 INFO L276 IsEmpty]: Start isEmpty. Operand 141961 states and 235211 transitions. [2022-02-10 02:48:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-10 02:48:18,504 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:18,504 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:18,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:18,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:18,705 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:18,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1656539, now seen corresponding path program 86 times [2022-02-10 02:48:18,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:18,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979108118] [2022-02-10 02:48:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:18,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 41 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:18,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:18,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979108118] [2022-02-10 02:48:18,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979108118] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:18,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142101234] [2022-02-10 02:48:18,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:18,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:18,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:18,773 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:18,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-10 02:48:18,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:18,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:18,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:48:18,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:18,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:19,045 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 41 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:19,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142101234] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:19,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:19,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2022-02-10 02:48:19,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804923230] [2022-02-10 02:48:19,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:19,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:48:19,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:19,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:48:19,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:19,047 INFO L87 Difference]: Start difference. First operand 141961 states and 235211 transitions. Second operand has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:20,871 INFO L93 Difference]: Finished difference Result 151116 states and 249756 transitions. [2022-02-10 02:48:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-10 02:48:20,872 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-02-10 02:48:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:21,270 INFO L225 Difference]: With dead ends: 151116 [2022-02-10 02:48:21,270 INFO L226 Difference]: Without dead ends: 151108 [2022-02-10 02:48:21,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2019, Invalid=4461, Unknown=0, NotChecked=0, Total=6480 [2022-02-10 02:48:21,271 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 282 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:21,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 663 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151108 states. [2022-02-10 02:48:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151108 to 138240. [2022-02-10 02:48:24,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138240 states, 138239 states have (on average 1.6558568855388132) internal successors, (228904), 138239 states have internal predecessors, (228904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:24,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138240 states to 138240 states and 228904 transitions. [2022-02-10 02:48:24,636 INFO L78 Accepts]: Start accepts. Automaton has 138240 states and 228904 transitions. Word has length 54 [2022-02-10 02:48:24,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:24,636 INFO L470 AbstractCegarLoop]: Abstraction has 138240 states and 228904 transitions. [2022-02-10 02:48:24,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:24,636 INFO L276 IsEmpty]: Start isEmpty. Operand 138240 states and 228904 transitions. [2022-02-10 02:48:24,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-10 02:48:24,758 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:24,758 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:24,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:24,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:24,959 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:24,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash 933741659, now seen corresponding path program 87 times [2022-02-10 02:48:24,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:24,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966228717] [2022-02-10 02:48:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:24,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 35 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:25,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:25,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966228717] [2022-02-10 02:48:25,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966228717] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:25,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507033261] [2022-02-10 02:48:25,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:48:25,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:25,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:25,026 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:25,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-10 02:48:25,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:48:25,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:25,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:48:25,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:25,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 35 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:25,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507033261] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:25,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:25,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 19 [2022-02-10 02:48:25,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980872631] [2022-02-10 02:48:25,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:25,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:48:25,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:48:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:25,305 INFO L87 Difference]: Start difference. First operand 138240 states and 228904 transitions. Second operand has 19 states, 19 states have (on average 4.0) internal successors, (76), 19 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:27,165 INFO L93 Difference]: Finished difference Result 167183 states and 276211 transitions. [2022-02-10 02:48:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 02:48:27,165 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 19 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-02-10 02:48:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:27,584 INFO L225 Difference]: With dead ends: 167183 [2022-02-10 02:48:27,584 INFO L226 Difference]: Without dead ends: 167175 [2022-02-10 02:48:27,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1661 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1961, Invalid=4201, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 02:48:27,584 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 313 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:27,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 621 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167175 states. [2022-02-10 02:48:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167175 to 132608. [2022-02-10 02:48:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132608 states, 132607 states have (on average 1.6563228185540733) internal successors, (219640), 132607 states have internal predecessors, (219640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132608 states to 132608 states and 219640 transitions. [2022-02-10 02:48:31,793 INFO L78 Accepts]: Start accepts. Automaton has 132608 states and 219640 transitions. Word has length 54 [2022-02-10 02:48:31,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:31,793 INFO L470 AbstractCegarLoop]: Abstraction has 132608 states and 219640 transitions. [2022-02-10 02:48:31,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 19 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 132608 states and 219640 transitions. [2022-02-10 02:48:31,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-10 02:48:31,970 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:31,970 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:31,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:32,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:32,183 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:32,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:32,184 INFO L85 PathProgramCache]: Analyzing trace with hash -62147365, now seen corresponding path program 88 times [2022-02-10 02:48:32,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:32,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472914040] [2022-02-10 02:48:32,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:32,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 44 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:32,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:32,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472914040] [2022-02-10 02:48:32,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472914040] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:32,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825218153] [2022-02-10 02:48:32,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:48:32,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:32,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:32,268 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:32,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-10 02:48:32,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:48:32,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:32,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:48:32,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:32,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 44 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:32,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825218153] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:32,561 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:32,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-02-10 02:48:32,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435875040] [2022-02-10 02:48:32,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:32,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:48:32,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:48:32,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:48:32,562 INFO L87 Difference]: Start difference. First operand 132608 states and 219640 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:34,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:34,161 INFO L93 Difference]: Finished difference Result 144127 states and 239160 transitions. [2022-02-10 02:48:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 02:48:34,161 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-02-10 02:48:34,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:34,561 INFO L225 Difference]: With dead ends: 144127 [2022-02-10 02:48:34,561 INFO L226 Difference]: Without dead ends: 144112 [2022-02-10 02:48:34,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1464, Invalid=3092, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:48:34,562 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 261 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:34,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 514 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:48:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144112 states. [2022-02-10 02:48:37,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144112 to 117474. [2022-02-10 02:48:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117474 states, 117473 states have (on average 1.6527287121295957) internal successors, (194151), 117473 states have internal predecessors, (194151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117474 states to 117474 states and 194151 transitions. [2022-02-10 02:48:37,564 INFO L78 Accepts]: Start accepts. Automaton has 117474 states and 194151 transitions. Word has length 54 [2022-02-10 02:48:37,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:37,564 INFO L470 AbstractCegarLoop]: Abstraction has 117474 states and 194151 transitions. [2022-02-10 02:48:37,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:37,564 INFO L276 IsEmpty]: Start isEmpty. Operand 117474 states and 194151 transitions. [2022-02-10 02:48:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-10 02:48:37,693 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:37,693 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:37,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:37,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2022-02-10 02:48:37,894 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:37,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash -787944805, now seen corresponding path program 89 times [2022-02-10 02:48:37,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:37,895 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313684567] [2022-02-10 02:48:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:37,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:37,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:37,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313684567] [2022-02-10 02:48:37,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313684567] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:37,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161740056] [2022-02-10 02:48:37,946 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:48:37,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:37,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:37,947 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:37,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-10 02:48:37,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-10 02:48:37,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:37,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:48:37,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:38,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:38,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161740056] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:38,263 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:38,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 19 [2022-02-10 02:48:38,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425856014] [2022-02-10 02:48:38,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:38,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:48:38,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:48:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:38,264 INFO L87 Difference]: Start difference. First operand 117474 states and 194151 transitions. Second operand has 19 states, 19 states have (on average 4.315789473684211) internal successors, (82), 19 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:40,207 INFO L93 Difference]: Finished difference Result 170863 states and 282352 transitions. [2022-02-10 02:48:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 02:48:40,207 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.315789473684211) internal successors, (82), 19 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-02-10 02:48:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:40,978 INFO L225 Difference]: With dead ends: 170863 [2022-02-10 02:48:40,978 INFO L226 Difference]: Without dead ends: 170852 [2022-02-10 02:48:40,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1982, Invalid=4180, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 02:48:40,978 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 376 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:40,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 541 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:48:41,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170852 states. [2022-02-10 02:48:43,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170852 to 130887. [2022-02-10 02:48:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130887 states, 130886 states have (on average 1.654837033754565) internal successors, (216595), 130886 states have internal predecessors, (216595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130887 states to 130887 states and 216595 transitions. [2022-02-10 02:48:44,598 INFO L78 Accepts]: Start accepts. Automaton has 130887 states and 216595 transitions. Word has length 54 [2022-02-10 02:48:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:44,598 INFO L470 AbstractCegarLoop]: Abstraction has 130887 states and 216595 transitions. [2022-02-10 02:48:44,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.315789473684211) internal successors, (82), 19 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 130887 states and 216595 transitions. [2022-02-10 02:48:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-10 02:48:44,713 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:44,713 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:44,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:44,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:44,914 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:44,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:44,914 INFO L85 PathProgramCache]: Analyzing trace with hash 570856027, now seen corresponding path program 90 times [2022-02-10 02:48:44,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:44,915 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244445052] [2022-02-10 02:48:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:44,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 39 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:44,984 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:44,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244445052] [2022-02-10 02:48:44,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244445052] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:44,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009635518] [2022-02-10 02:48:44,984 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:48:44,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:44,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:44,985 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:44,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-10 02:48:45,013 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-02-10 02:48:45,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:45,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:48:45,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:45,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 39 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:45,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009635518] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:45,286 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:45,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2022-02-10 02:48:45,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390174197] [2022-02-10 02:48:45,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:45,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:48:45,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:45,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:48:45,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:48:45,287 INFO L87 Difference]: Start difference. First operand 130887 states and 216595 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:46,853 INFO L93 Difference]: Finished difference Result 158844 states and 264886 transitions. [2022-02-10 02:48:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 02:48:46,853 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-02-10 02:48:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:47,285 INFO L225 Difference]: With dead ends: 158844 [2022-02-10 02:48:47,285 INFO L226 Difference]: Without dead ends: 158811 [2022-02-10 02:48:47,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1406, Invalid=3286, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:48:47,286 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 402 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:47,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 528 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:47,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158811 states. [2022-02-10 02:48:49,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158811 to 118895. [2022-02-10 02:48:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118895 states, 118894 states have (on average 1.6539606708496644) internal successors, (196646), 118894 states have internal predecessors, (196646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:50,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118895 states to 118895 states and 196646 transitions. [2022-02-10 02:48:50,665 INFO L78 Accepts]: Start accepts. Automaton has 118895 states and 196646 transitions. Word has length 54 [2022-02-10 02:48:50,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:50,665 INFO L470 AbstractCegarLoop]: Abstraction has 118895 states and 196646 transitions. [2022-02-10 02:48:50,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:50,665 INFO L276 IsEmpty]: Start isEmpty. Operand 118895 states and 196646 transitions. [2022-02-10 02:48:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-10 02:48:50,799 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:50,799 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:50,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-10 02:48:50,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:51,000 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:51,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2080087845, now seen corresponding path program 91 times [2022-02-10 02:48:51,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:51,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181211875] [2022-02-10 02:48:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:51,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 21 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:51,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:51,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181211875] [2022-02-10 02:48:51,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181211875] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:51,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10962938] [2022-02-10 02:48:51,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:48:51,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:51,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:51,049 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:51,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-10 02:48:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:51,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:48:51,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:51,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 21 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:51,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10962938] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:51,362 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:51,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 19 [2022-02-10 02:48:51,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331632468] [2022-02-10 02:48:51,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:51,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 02:48:51,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:51,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 02:48:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:48:51,363 INFO L87 Difference]: Start difference. First operand 118895 states and 196646 transitions. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:53,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:48:53,342 INFO L93 Difference]: Finished difference Result 206533 states and 344468 transitions. [2022-02-10 02:48:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-10 02:48:53,343 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-02-10 02:48:53,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:48:53,958 INFO L225 Difference]: With dead ends: 206533 [2022-02-10 02:48:53,958 INFO L226 Difference]: Without dead ends: 206525 [2022-02-10 02:48:53,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2281 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2217, Invalid=4589, Unknown=0, NotChecked=0, Total=6806 [2022-02-10 02:48:53,958 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 371 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:48:53,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 461 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:48:54,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206525 states. [2022-02-10 02:48:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206525 to 117350. [2022-02-10 02:48:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117350 states, 117349 states have (on average 1.653997903688996) internal successors, (194095), 117349 states have internal predecessors, (194095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117350 states to 117350 states and 194095 transitions. [2022-02-10 02:48:57,719 INFO L78 Accepts]: Start accepts. Automaton has 117350 states and 194095 transitions. Word has length 54 [2022-02-10 02:48:57,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:48:57,719 INFO L470 AbstractCegarLoop]: Abstraction has 117350 states and 194095 transitions. [2022-02-10 02:48:57,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:48:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 117350 states and 194095 transitions. [2022-02-10 02:48:57,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-10 02:48:57,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:57,838 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:57,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-02-10 02:48:58,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:58,039 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:48:58,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:58,039 INFO L85 PathProgramCache]: Analyzing trace with hash -930787365, now seen corresponding path program 92 times [2022-02-10 02:48:58,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:58,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808219957] [2022-02-10 02:48:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:58,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 46 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:58,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:58,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808219957] [2022-02-10 02:48:58,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808219957] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:48:58,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607101411] [2022-02-10 02:48:58,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:48:58,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:48:58,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:58,118 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:48:58,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-10 02:48:58,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:48:58,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:48:58,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:48:58,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:48:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:58,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:48:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 46 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:58,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607101411] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:48:58,849 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:48:58,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2022-02-10 02:48:58,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585180606] [2022-02-10 02:48:58,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:48:58,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:48:58,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:48:58,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:48:58,850 INFO L87 Difference]: Start difference. First operand 117350 states and 194095 transitions. Second operand has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:00,034 INFO L93 Difference]: Finished difference Result 166774 states and 279002 transitions. [2022-02-10 02:49:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-10 02:49:00,034 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-02-10 02:49:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:00,814 INFO L225 Difference]: With dead ends: 166774 [2022-02-10 02:49:00,814 INFO L226 Difference]: Without dead ends: 166729 [2022-02-10 02:49:00,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1314, Invalid=3378, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:49:00,814 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 281 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:00,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 451 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:00,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166729 states. [2022-02-10 02:49:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166729 to 113873. [2022-02-10 02:49:03,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113873 states, 113872 states have (on average 1.6529612196150063) internal successors, (188226), 113872 states have internal predecessors, (188226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113873 states to 113873 states and 188226 transitions. [2022-02-10 02:49:03,777 INFO L78 Accepts]: Start accepts. Automaton has 113873 states and 188226 transitions. Word has length 54 [2022-02-10 02:49:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:03,777 INFO L470 AbstractCegarLoop]: Abstraction has 113873 states and 188226 transitions. [2022-02-10 02:49:03,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand 113873 states and 188226 transitions. [2022-02-10 02:49:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-10 02:49:03,904 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:03,904 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:03,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:04,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:04,104 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash 664676123, now seen corresponding path program 93 times [2022-02-10 02:49:04,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:04,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007329001] [2022-02-10 02:49:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:04,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 32 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:04,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:04,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007329001] [2022-02-10 02:49:04,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007329001] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:04,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427950085] [2022-02-10 02:49:04,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:04,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:04,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:04,152 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:04,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-10 02:49:04,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:49:04,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:04,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:04,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:04,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 32 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:04,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427950085] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:04,490 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:04,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 20 [2022-02-10 02:49:04,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810569558] [2022-02-10 02:49:04,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:04,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 02:49:04,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 02:49:04,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:49:04,491 INFO L87 Difference]: Start difference. First operand 113873 states and 188226 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:07,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:07,099 INFO L93 Difference]: Finished difference Result 217985 states and 363766 transitions. [2022-02-10 02:49:07,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-10 02:49:07,100 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-02-10 02:49:07,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:07,817 INFO L225 Difference]: With dead ends: 217985 [2022-02-10 02:49:07,817 INFO L226 Difference]: Without dead ends: 217977 [2022-02-10 02:49:07,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3984 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2967, Invalid=6735, Unknown=0, NotChecked=0, Total=9702 [2022-02-10 02:49:07,818 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 385 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:07,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 482 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:08,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217977 states. [2022-02-10 02:49:11,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217977 to 154463. [2022-02-10 02:49:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154463 states, 154462 states have (on average 1.6538436638137535) internal successors, (255456), 154462 states have internal predecessors, (255456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154463 states to 154463 states and 255456 transitions. [2022-02-10 02:49:12,202 INFO L78 Accepts]: Start accepts. Automaton has 154463 states and 255456 transitions. Word has length 54 [2022-02-10 02:49:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:12,202 INFO L470 AbstractCegarLoop]: Abstraction has 154463 states and 255456 transitions. [2022-02-10 02:49:12,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 154463 states and 255456 transitions. [2022-02-10 02:49:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-10 02:49:12,337 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:12,338 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:12,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:12,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-02-10 02:49:12,538 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:12,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2057310885, now seen corresponding path program 94 times [2022-02-10 02:49:12,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:12,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557120547] [2022-02-10 02:49:12,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:12,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:12,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:12,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557120547] [2022-02-10 02:49:12,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557120547] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:12,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810402364] [2022-02-10 02:49:12,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:12,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:12,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:12,606 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:12,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-10 02:49:12,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:12,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:12,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 02:49:12,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:12,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:12,941 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:12,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810402364] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:12,941 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:12,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-02-10 02:49:12,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94570088] [2022-02-10 02:49:12,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:12,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:12,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:12,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:12,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:12,942 INFO L87 Difference]: Start difference. First operand 154463 states and 255456 transitions. Second operand has 23 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:14,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:14,999 INFO L93 Difference]: Finished difference Result 214076 states and 358305 transitions. [2022-02-10 02:49:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 02:49:14,999 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-02-10 02:49:14,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:15,598 INFO L225 Difference]: With dead ends: 214076 [2022-02-10 02:49:15,598 INFO L226 Difference]: Without dead ends: 214026 [2022-02-10 02:49:15,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1337 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1194, Invalid=3362, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:49:15,599 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 297 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:15,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 405 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214026 states. [2022-02-10 02:49:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214026 to 163741. [2022-02-10 02:49:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163741 states, 163740 states have (on average 1.653475021375351) internal successors, (270740), 163740 states have internal predecessors, (270740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163741 states to 163741 states and 270740 transitions. [2022-02-10 02:49:20,697 INFO L78 Accepts]: Start accepts. Automaton has 163741 states and 270740 transitions. Word has length 54 [2022-02-10 02:49:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:20,697 INFO L470 AbstractCegarLoop]: Abstraction has 163741 states and 270740 transitions. [2022-02-10 02:49:20,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 163741 states and 270740 transitions. [2022-02-10 02:49:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:49:20,872 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:20,872 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:20,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:21,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-02-10 02:49:21,073 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:21,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1336689247, now seen corresponding path program 95 times [2022-02-10 02:49:21,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:21,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994440288] [2022-02-10 02:49:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:21,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:21,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:21,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994440288] [2022-02-10 02:49:21,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994440288] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:21,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746483019] [2022-02-10 02:49:21,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:21,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:21,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:21,339 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:21,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-10 02:49:21,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:49:21,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:21,364 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:49:21,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:21,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:21,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746483019] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:21,723 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:21,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:49:21,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050485047] [2022-02-10 02:49:21,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:21,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:21,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:21,724 INFO L87 Difference]: Start difference. First operand 163741 states and 270740 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:23,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:23,171 INFO L93 Difference]: Finished difference Result 173686 states and 286307 transitions. [2022-02-10 02:49:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:49:23,171 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:49:23,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:23,614 INFO L225 Difference]: With dead ends: 173686 [2022-02-10 02:49:23,614 INFO L226 Difference]: Without dead ends: 173668 [2022-02-10 02:49:23,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:23,615 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 88 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:23,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 2128 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:49:24,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173668 states. [2022-02-10 02:49:26,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173668 to 166251. [2022-02-10 02:49:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166251 states, 166250 states have (on average 1.6534075187969925) internal successors, (274879), 166250 states have internal predecessors, (274879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166251 states to 166251 states and 274879 transitions. [2022-02-10 02:49:27,815 INFO L78 Accepts]: Start accepts. Automaton has 166251 states and 274879 transitions. Word has length 57 [2022-02-10 02:49:27,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:27,815 INFO L470 AbstractCegarLoop]: Abstraction has 166251 states and 274879 transitions. [2022-02-10 02:49:27,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:27,815 INFO L276 IsEmpty]: Start isEmpty. Operand 166251 states and 274879 transitions. [2022-02-10 02:49:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:49:27,961 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:27,962 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:27,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:28,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-02-10 02:49:28,162 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:28,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:28,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1683408443, now seen corresponding path program 96 times [2022-02-10 02:49:28,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:28,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167419775] [2022-02-10 02:49:28,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:28,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:28,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:28,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167419775] [2022-02-10 02:49:28,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167419775] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:28,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359049234] [2022-02-10 02:49:28,419 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:28,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:28,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:28,420 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:28,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-10 02:49:28,448 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-10 02:49:28,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:28,449 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:49:28,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:28,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:28,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359049234] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:28,793 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:28,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:49:28,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462867027] [2022-02-10 02:49:28,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:28,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:28,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:28,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:28,794 INFO L87 Difference]: Start difference. First operand 166251 states and 274879 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:30,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:30,102 INFO L93 Difference]: Finished difference Result 174289 states and 287310 transitions. [2022-02-10 02:49:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:49:30,103 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:49:30,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:30,539 INFO L225 Difference]: With dead ends: 174289 [2022-02-10 02:49:30,539 INFO L226 Difference]: Without dead ends: 174271 [2022-02-10 02:49:30,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:30,539 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 79 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:30,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 2045 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:49:30,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174271 states. [2022-02-10 02:49:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174271 to 169148. [2022-02-10 02:49:33,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169148 states, 169147 states have (on average 1.6535143987182745) internal successors, (279687), 169147 states have internal predecessors, (279687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169148 states to 169148 states and 279687 transitions. [2022-02-10 02:49:34,272 INFO L78 Accepts]: Start accepts. Automaton has 169148 states and 279687 transitions. Word has length 57 [2022-02-10 02:49:34,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:34,272 INFO L470 AbstractCegarLoop]: Abstraction has 169148 states and 279687 transitions. [2022-02-10 02:49:34,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:34,272 INFO L276 IsEmpty]: Start isEmpty. Operand 169148 states and 279687 transitions. [2022-02-10 02:49:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:49:34,878 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:34,878 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:34,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-02-10 02:49:35,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:35,079 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:35,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1025402715, now seen corresponding path program 97 times [2022-02-10 02:49:35,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:35,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75560826] [2022-02-10 02:49:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:35,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:35,331 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:35,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75560826] [2022-02-10 02:49:35,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75560826] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:35,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829104141] [2022-02-10 02:49:35,332 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:35,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:35,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:35,333 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:35,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-10 02:49:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:35,357 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:49:35,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:35,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:35,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829104141] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:35,707 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:35,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:49:35,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359505669] [2022-02-10 02:49:35,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:35,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:35,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:35,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:35,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:35,708 INFO L87 Difference]: Start difference. First operand 169148 states and 279687 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:37,032 INFO L93 Difference]: Finished difference Result 183253 states and 302386 transitions. [2022-02-10 02:49:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:49:37,032 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:49:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:37,492 INFO L225 Difference]: With dead ends: 183253 [2022-02-10 02:49:37,492 INFO L226 Difference]: Without dead ends: 183235 [2022-02-10 02:49:37,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:37,492 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 78 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:37,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 2024 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:49:37,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183235 states. [2022-02-10 02:49:40,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183235 to 174625. [2022-02-10 02:49:40,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174625 states, 174624 states have (on average 1.6537932930181418) internal successors, (288792), 174624 states have internal predecessors, (288792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174625 states to 174625 states and 288792 transitions. [2022-02-10 02:49:41,715 INFO L78 Accepts]: Start accepts. Automaton has 174625 states and 288792 transitions. Word has length 57 [2022-02-10 02:49:41,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:41,716 INFO L470 AbstractCegarLoop]: Abstraction has 174625 states and 288792 transitions. [2022-02-10 02:49:41,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:41,716 INFO L276 IsEmpty]: Start isEmpty. Operand 174625 states and 288792 transitions. [2022-02-10 02:49:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:49:41,892 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:41,892 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:41,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:42,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-02-10 02:49:42,094 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:42,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:42,094 INFO L85 PathProgramCache]: Analyzing trace with hash -68266009, now seen corresponding path program 98 times [2022-02-10 02:49:42,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:42,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555906606] [2022-02-10 02:49:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:42,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:42,352 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:42,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:42,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555906606] [2022-02-10 02:49:42,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555906606] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:42,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394817427] [2022-02-10 02:49:42,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:42,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:42,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:42,354 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:42,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-10 02:49:42,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:42,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:42,378 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:49:42,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:42,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:42,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394817427] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:42,726 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:42,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:49:42,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249498609] [2022-02-10 02:49:42,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:42,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:42,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:42,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:42,727 INFO L87 Difference]: Start difference. First operand 174625 states and 288792 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:44,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:44,135 INFO L93 Difference]: Finished difference Result 191547 states and 316207 transitions. [2022-02-10 02:49:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:49:44,135 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:49:44,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:44,632 INFO L225 Difference]: With dead ends: 191547 [2022-02-10 02:49:44,632 INFO L226 Difference]: Without dead ends: 191529 [2022-02-10 02:49:44,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:44,633 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 77 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:44,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 2003 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:49:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191529 states. [2022-02-10 02:49:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191529 to 181232. [2022-02-10 02:49:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181232 states, 181231 states have (on average 1.6539499313031436) internal successors, (299747), 181231 states have internal predecessors, (299747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181232 states to 181232 states and 299747 transitions. [2022-02-10 02:49:49,006 INFO L78 Accepts]: Start accepts. Automaton has 181232 states and 299747 transitions. Word has length 57 [2022-02-10 02:49:49,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:49,006 INFO L470 AbstractCegarLoop]: Abstraction has 181232 states and 299747 transitions. [2022-02-10 02:49:49,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:49,006 INFO L276 IsEmpty]: Start isEmpty. Operand 181232 states and 299747 transitions. [2022-02-10 02:49:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:49:49,619 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:49,619 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:49,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:49,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:49,833 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:49,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:49,833 INFO L85 PathProgramCache]: Analyzing trace with hash 465074839, now seen corresponding path program 99 times [2022-02-10 02:49:49,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:49,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695291124] [2022-02-10 02:49:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:49,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:49:50,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:50,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695291124] [2022-02-10 02:49:50,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695291124] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:50,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751823476] [2022-02-10 02:49:50,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:50,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:50,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:50,093 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:50,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-10 02:49:50,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-02-10 02:49:50,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:50,118 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:49:50,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:49:50,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:49:50,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751823476] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:50,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:50,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:49:50,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887828322] [2022-02-10 02:49:50,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:50,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:50,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:50,471 INFO L87 Difference]: Start difference. First operand 181232 states and 299747 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:51,907 INFO L93 Difference]: Finished difference Result 203343 states and 335825 transitions. [2022-02-10 02:49:51,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:49:51,907 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:49:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:52,514 INFO L225 Difference]: With dead ends: 203343 [2022-02-10 02:49:52,514 INFO L226 Difference]: Without dead ends: 203319 [2022-02-10 02:49:52,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:52,514 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 85 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:52,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 2064 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:49:52,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203319 states. [2022-02-10 02:49:56,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203319 to 188751. [2022-02-10 02:49:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188751 states, 188750 states have (on average 1.6538278145695364) internal successors, (312160), 188750 states have internal predecessors, (312160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188751 states to 188751 states and 312160 transitions. [2022-02-10 02:49:57,505 INFO L78 Accepts]: Start accepts. Automaton has 188751 states and 312160 transitions. Word has length 57 [2022-02-10 02:49:57,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:57,505 INFO L470 AbstractCegarLoop]: Abstraction has 188751 states and 312160 transitions. [2022-02-10 02:49:57,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:57,505 INFO L276 IsEmpty]: Start isEmpty. Operand 188751 states and 312160 transitions. [2022-02-10 02:49:57,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:49:57,702 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:57,702 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:57,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-02-10 02:49:57,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-10 02:49:57,915 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:49:57,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:57,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1239687027, now seen corresponding path program 100 times [2022-02-10 02:49:57,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:57,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878513686] [2022-02-10 02:49:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:57,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:58,231 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:58,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878513686] [2022-02-10 02:49:58,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878513686] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:58,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809013733] [2022-02-10 02:49:58,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:58,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:58,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:58,232 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:58,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-10 02:49:58,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:58,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:58,258 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:49:58,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:58,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:59,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809013733] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:59,026 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:59,026 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:49:59,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915530620] [2022-02-10 02:49:59,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:59,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:49:59,027 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:49:59,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:49:59,027 INFO L87 Difference]: Start difference. First operand 188751 states and 312160 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:00,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:00,388 INFO L93 Difference]: Finished difference Result 202164 states and 333749 transitions. [2022-02-10 02:50:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:50:00,389 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:50:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:00,994 INFO L225 Difference]: With dead ends: 202164 [2022-02-10 02:50:00,994 INFO L226 Difference]: Without dead ends: 202140 [2022-02-10 02:50:00,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:00,995 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 75 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:00,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 1938 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202140 states. [2022-02-10 02:50:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202140 to 195674. [2022-02-10 02:50:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195674 states, 195673 states have (on average 1.6540043848665886) internal successors, (323644), 195673 states have internal predecessors, (323644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195674 states to 195674 states and 323644 transitions. [2022-02-10 02:50:05,487 INFO L78 Accepts]: Start accepts. Automaton has 195674 states and 323644 transitions. Word has length 57 [2022-02-10 02:50:05,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:05,487 INFO L470 AbstractCegarLoop]: Abstraction has 195674 states and 323644 transitions. [2022-02-10 02:50:05,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:05,487 INFO L276 IsEmpty]: Start isEmpty. Operand 195674 states and 323644 transitions. [2022-02-10 02:50:05,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:50:05,643 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:05,643 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:05,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:05,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:05,844 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash 589432227, now seen corresponding path program 101 times [2022-02-10 02:50:05,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:05,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729700899] [2022-02-10 02:50:05,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:05,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:06,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:06,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729700899] [2022-02-10 02:50:06,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729700899] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:06,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796889205] [2022-02-10 02:50:06,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:06,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:06,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:06,106 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:06,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-10 02:50:06,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-10 02:50:06,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:06,131 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:50:06,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:06,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:06,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796889205] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:06,940 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:06,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:50:06,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088626330] [2022-02-10 02:50:06,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:06,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:50:06,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:06,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:50:06,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:06,941 INFO L87 Difference]: Start difference. First operand 195674 states and 323644 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:08,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:08,364 INFO L93 Difference]: Finished difference Result 217081 states and 358710 transitions. [2022-02-10 02:50:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:50:08,364 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:50:08,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:08,975 INFO L225 Difference]: With dead ends: 217081 [2022-02-10 02:50:08,975 INFO L226 Difference]: Without dead ends: 217057 [2022-02-10 02:50:08,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:08,975 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 74 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:08,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1917 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:09,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217057 states. [2022-02-10 02:50:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217057 to 206230. [2022-02-10 02:50:13,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206230 states, 206229 states have (on average 1.654767273273885) internal successors, (341261), 206229 states have internal predecessors, (341261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206230 states to 206230 states and 341261 transitions. [2022-02-10 02:50:14,305 INFO L78 Accepts]: Start accepts. Automaton has 206230 states and 341261 transitions. Word has length 57 [2022-02-10 02:50:14,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:14,305 INFO L470 AbstractCegarLoop]: Abstraction has 206230 states and 341261 transitions. [2022-02-10 02:50:14,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 206230 states and 341261 transitions. [2022-02-10 02:50:14,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:50:14,476 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:14,476 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:14,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:14,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-02-10 02:50:14,678 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:14,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:14,678 INFO L85 PathProgramCache]: Analyzing trace with hash 270949679, now seen corresponding path program 102 times [2022-02-10 02:50:14,678 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:14,678 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222720485] [2022-02-10 02:50:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:14,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:14,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:14,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222720485] [2022-02-10 02:50:14,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222720485] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:14,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864785745] [2022-02-10 02:50:14,943 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:14,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:14,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:14,944 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:14,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-10 02:50:14,970 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:50:14,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:14,971 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:50:14,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:15,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:15,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864785745] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:15,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:15,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:50:15,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311948445] [2022-02-10 02:50:15,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:15,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:50:15,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:15,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:50:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:15,319 INFO L87 Difference]: Start difference. First operand 206230 states and 341261 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:16,816 INFO L93 Difference]: Finished difference Result 230224 states and 380633 transitions. [2022-02-10 02:50:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:50:16,816 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:50:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:17,756 INFO L225 Difference]: With dead ends: 230224 [2022-02-10 02:50:17,757 INFO L226 Difference]: Without dead ends: 230200 [2022-02-10 02:50:17,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:17,757 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 73 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:17,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 1896 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:17,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230200 states. [2022-02-10 02:50:21,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230200 to 217947. [2022-02-10 02:50:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217947 states, 217946 states have (on average 1.6555339395997173) internal successors, (360817), 217946 states have internal predecessors, (360817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217947 states to 217947 states and 360817 transitions. [2022-02-10 02:50:23,117 INFO L78 Accepts]: Start accepts. Automaton has 217947 states and 360817 transitions. Word has length 57 [2022-02-10 02:50:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:23,118 INFO L470 AbstractCegarLoop]: Abstraction has 217947 states and 360817 transitions. [2022-02-10 02:50:23,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 217947 states and 360817 transitions. [2022-02-10 02:50:23,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:50:23,299 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:23,299 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:23,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:23,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:23,500 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:23,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:23,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1567114273, now seen corresponding path program 103 times [2022-02-10 02:50:23,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:23,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365512180] [2022-02-10 02:50:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:23,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:23,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:23,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365512180] [2022-02-10 02:50:23,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365512180] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:23,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202705674] [2022-02-10 02:50:23,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:23,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:23,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:23,777 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:23,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-10 02:50:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:23,802 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:50:23,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:24,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:50:24,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202705674] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:24,563 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:24,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:50:24,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009563295] [2022-02-10 02:50:24,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:24,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:50:24,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:24,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:50:24,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:24,564 INFO L87 Difference]: Start difference. First operand 217947 states and 360817 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:26,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:26,049 INFO L93 Difference]: Finished difference Result 246148 states and 407157 transitions. [2022-02-10 02:50:26,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:50:26,050 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:50:26,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:26,709 INFO L225 Difference]: With dead ends: 246148 [2022-02-10 02:50:26,709 INFO L226 Difference]: Without dead ends: 246118 [2022-02-10 02:50:26,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:26,709 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 81 mSDsluCounter, 2166 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:26,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 1980 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246118 states. [2022-02-10 02:50:31,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246118 to 230248. [2022-02-10 02:50:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230248 states, 230247 states have (on average 1.656208332790438) internal successors, (381337), 230247 states have internal predecessors, (381337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230248 states to 230248 states and 381337 transitions. [2022-02-10 02:50:33,895 INFO L78 Accepts]: Start accepts. Automaton has 230248 states and 381337 transitions. Word has length 57 [2022-02-10 02:50:33,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:33,895 INFO L470 AbstractCegarLoop]: Abstraction has 230248 states and 381337 transitions. [2022-02-10 02:50:33,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 230248 states and 381337 transitions. [2022-02-10 02:50:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:50:34,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:34,108 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:34,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:34,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:34,327 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:34,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1364742485, now seen corresponding path program 104 times [2022-02-10 02:50:34,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:34,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107222926] [2022-02-10 02:50:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:34,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:34,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:34,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107222926] [2022-02-10 02:50:34,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107222926] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:34,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805556735] [2022-02-10 02:50:34,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:34,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:34,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:34,646 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:34,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-10 02:50:34,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:34,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:34,676 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:50:34,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:34,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:35,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805556735] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:35,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:35,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:50:35,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474218946] [2022-02-10 02:50:35,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:35,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:50:35,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:35,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:50:35,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:35,061 INFO L87 Difference]: Start difference. First operand 230248 states and 381337 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:36,647 INFO L93 Difference]: Finished difference Result 243658 states and 403030 transitions. [2022-02-10 02:50:36,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:50:36,648 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:50:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:37,321 INFO L225 Difference]: With dead ends: 243658 [2022-02-10 02:50:37,321 INFO L226 Difference]: Without dead ends: 243632 [2022-02-10 02:50:37,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:37,322 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 71 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:37,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 1854 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:50:37,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243632 states. [2022-02-10 02:50:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243632 to 238335. [2022-02-10 02:50:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238335 states, 238334 states have (on average 1.6561380247887418) internal successors, (394714), 238334 states have internal predecessors, (394714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238335 states to 238335 states and 394714 transitions. [2022-02-10 02:50:43,603 INFO L78 Accepts]: Start accepts. Automaton has 238335 states and 394714 transitions. Word has length 57 [2022-02-10 02:50:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:43,603 INFO L470 AbstractCegarLoop]: Abstraction has 238335 states and 394714 transitions. [2022-02-10 02:50:43,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 238335 states and 394714 transitions. [2022-02-10 02:50:43,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:50:43,800 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:43,800 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:43,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:44,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2022-02-10 02:50:44,001 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:44,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash 876072427, now seen corresponding path program 105 times [2022-02-10 02:50:44,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:44,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056143757] [2022-02-10 02:50:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:44,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:44,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:44,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056143757] [2022-02-10 02:50:44,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056143757] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:44,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668774059] [2022-02-10 02:50:44,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:44,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:44,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:44,261 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:44,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-10 02:50:44,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-02-10 02:50:44,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:44,287 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:50:44,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:44,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:44,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668774059] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:44,632 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:44,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:50:44,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974583131] [2022-02-10 02:50:44,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:44,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:50:44,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:44,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:50:44,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:44,633 INFO L87 Difference]: Start difference. First operand 238335 states and 394714 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:46,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:46,183 INFO L93 Difference]: Finished difference Result 259720 states and 429691 transitions. [2022-02-10 02:50:46,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:50:46,183 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:50:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:47,234 INFO L225 Difference]: With dead ends: 259720 [2022-02-10 02:50:47,234 INFO L226 Difference]: Without dead ends: 259694 [2022-02-10 02:50:47,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:47,235 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 70 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:47,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 1833 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259694 states. [2022-02-10 02:50:52,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259694 to 251163. [2022-02-10 02:50:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251163 states, 251162 states have (on average 1.6562059547224501) internal successors, (415976), 251162 states have internal predecessors, (415976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251163 states to 251163 states and 415976 transitions. [2022-02-10 02:50:53,405 INFO L78 Accepts]: Start accepts. Automaton has 251163 states and 415976 transitions. Word has length 57 [2022-02-10 02:50:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:53,405 INFO L470 AbstractCegarLoop]: Abstraction has 251163 states and 415976 transitions. [2022-02-10 02:50:53,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:53,405 INFO L276 IsEmpty]: Start isEmpty. Operand 251163 states and 415976 transitions. [2022-02-10 02:50:54,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:50:54,073 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:54,073 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:54,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-10 02:50:54,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:54,273 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:50:54,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2051492983, now seen corresponding path program 106 times [2022-02-10 02:50:54,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:54,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611291620] [2022-02-10 02:50:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:54,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:54,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:54,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611291620] [2022-02-10 02:50:54,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611291620] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:54,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579080625] [2022-02-10 02:50:54,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:54,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:54,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:54,549 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:54,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-10 02:50:54,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:54,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:54,575 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:50:54,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:54,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:54,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579080625] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:54,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:54,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:50:54,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843201736] [2022-02-10 02:50:54,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:54,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:50:54,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:54,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:50:54,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:54,924 INFO L87 Difference]: Start difference. First operand 251163 states and 415976 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:56,492 INFO L93 Difference]: Finished difference Result 274662 states and 454418 transitions. [2022-02-10 02:50:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:50:56,492 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:50:56,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:57,259 INFO L225 Difference]: With dead ends: 274662 [2022-02-10 02:50:57,259 INFO L226 Difference]: Without dead ends: 274636 [2022-02-10 02:50:57,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:50:57,259 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 69 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:57,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1812 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:57,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274636 states. [2022-02-10 02:51:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274636 to 265301. [2022-02-10 02:51:03,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265301 states, 265300 states have (on average 1.656159065209197) internal successors, (439379), 265300 states have internal predecessors, (439379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265301 states to 265301 states and 439379 transitions. [2022-02-10 02:51:04,757 INFO L78 Accepts]: Start accepts. Automaton has 265301 states and 439379 transitions. Word has length 57 [2022-02-10 02:51:04,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:04,757 INFO L470 AbstractCegarLoop]: Abstraction has 265301 states and 439379 transitions. [2022-02-10 02:51:04,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:04,757 INFO L276 IsEmpty]: Start isEmpty. Operand 265301 states and 439379 transitions. [2022-02-10 02:51:05,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:51:05,014 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:05,014 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:05,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:05,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:05,235 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:05,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:05,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1677531353, now seen corresponding path program 107 times [2022-02-10 02:51:05,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:05,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123950886] [2022-02-10 02:51:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:05,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:51:05,572 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:05,572 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123950886] [2022-02-10 02:51:05,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123950886] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:05,572 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934132491] [2022-02-10 02:51:05,572 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:51:05,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:05,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:05,574 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:05,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-10 02:51:05,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-02-10 02:51:05,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:05,614 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:51:05,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:51:05,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:51:06,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934132491] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:06,087 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:06,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:51:06,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108272291] [2022-02-10 02:51:06,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:06,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:51:06,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:06,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:51:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:06,088 INFO L87 Difference]: Start difference. First operand 265301 states and 439379 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:08,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:08,390 INFO L93 Difference]: Finished difference Result 292373 states and 483626 transitions. [2022-02-10 02:51:08,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:51:08,390 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:51:08,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:09,737 INFO L225 Difference]: With dead ends: 292373 [2022-02-10 02:51:09,737 INFO L226 Difference]: Without dead ends: 292341 [2022-02-10 02:51:09,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:09,738 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 77 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:09,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1896 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:51:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292341 states. [2022-02-10 02:51:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292341 to 280313. [2022-02-10 02:51:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280313 states, 280312 states have (on average 1.6559940352179001) internal successors, (464195), 280312 states have internal predecessors, (464195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280313 states to 280313 states and 464195 transitions. [2022-02-10 02:51:17,270 INFO L78 Accepts]: Start accepts. Automaton has 280313 states and 464195 transitions. Word has length 57 [2022-02-10 02:51:17,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:17,270 INFO L470 AbstractCegarLoop]: Abstraction has 280313 states and 464195 transitions. [2022-02-10 02:51:17,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 280313 states and 464195 transitions. [2022-02-10 02:51:17,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:51:17,466 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:17,466 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:17,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:17,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:17,667 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:17,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:17,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1654715363, now seen corresponding path program 108 times [2022-02-10 02:51:17,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:17,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127235258] [2022-02-10 02:51:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:17,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:17,924 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:17,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127235258] [2022-02-10 02:51:17,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127235258] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:17,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305879035] [2022-02-10 02:51:17,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:17,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:17,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:17,925 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:17,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-10 02:51:17,955 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-02-10 02:51:17,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:17,956 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:51:17,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:18,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:18,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305879035] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:18,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:18,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:51:18,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714048630] [2022-02-10 02:51:18,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:18,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:51:18,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:18,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:51:18,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:18,310 INFO L87 Difference]: Start difference. First operand 280313 states and 464195 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:20,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:20,349 INFO L93 Difference]: Finished difference Result 290864 states and 481180 transitions. [2022-02-10 02:51:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:51:20,349 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:51:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:21,227 INFO L225 Difference]: With dead ends: 290864 [2022-02-10 02:51:21,228 INFO L226 Difference]: Without dead ends: 290836 [2022-02-10 02:51:21,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:21,228 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 67 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:21,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1770 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:51:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290836 states. [2022-02-10 02:51:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290836 to 287780. [2022-02-10 02:51:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287780 states, 287779 states have (on average 1.655617678843835) internal successors, (476452), 287779 states have internal predecessors, (476452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:28,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287780 states to 287780 states and 476452 transitions. [2022-02-10 02:51:28,778 INFO L78 Accepts]: Start accepts. Automaton has 287780 states and 476452 transitions. Word has length 57 [2022-02-10 02:51:28,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:28,779 INFO L470 AbstractCegarLoop]: Abstraction has 287780 states and 476452 transitions. [2022-02-10 02:51:28,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:28,779 INFO L276 IsEmpty]: Start isEmpty. Operand 287780 states and 476452 transitions. [2022-02-10 02:51:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:51:28,983 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:28,983 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:28,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:29,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-02-10 02:51:29,184 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:29,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash 546848819, now seen corresponding path program 109 times [2022-02-10 02:51:29,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:29,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044081033] [2022-02-10 02:51:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:29,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:29,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:29,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044081033] [2022-02-10 02:51:29,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044081033] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:29,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427371654] [2022-02-10 02:51:29,446 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:29,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:29,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:29,447 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:29,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-10 02:51:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:29,473 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:51:29,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:29,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:29,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427371654] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:29,828 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:29,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:51:29,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709290018] [2022-02-10 02:51:29,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:29,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:51:29,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:51:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:29,829 INFO L87 Difference]: Start difference. First operand 287780 states and 476452 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:32,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:32,010 INFO L93 Difference]: Finished difference Result 304471 states and 503564 transitions. [2022-02-10 02:51:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:51:32,010 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:51:32,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:32,914 INFO L225 Difference]: With dead ends: 304471 [2022-02-10 02:51:32,915 INFO L226 Difference]: Without dead ends: 304443 [2022-02-10 02:51:32,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:32,915 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 66 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:32,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 1749 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:51:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304443 states. [2022-02-10 02:51:40,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304443 to 299425. [2022-02-10 02:51:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299425 states, 299424 states have (on average 1.6550410120765202) internal successors, (495559), 299424 states have internal predecessors, (495559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299425 states to 299425 states and 495559 transitions. [2022-02-10 02:51:41,894 INFO L78 Accepts]: Start accepts. Automaton has 299425 states and 495559 transitions. Word has length 57 [2022-02-10 02:51:41,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:41,894 INFO L470 AbstractCegarLoop]: Abstraction has 299425 states and 495559 transitions. [2022-02-10 02:51:41,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:41,894 INFO L276 IsEmpty]: Start isEmpty. Operand 299425 states and 495559 transitions. [2022-02-10 02:51:42,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:51:42,104 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:42,104 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:42,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:42,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-02-10 02:51:42,305 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:42,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:42,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1636194881, now seen corresponding path program 110 times [2022-02-10 02:51:42,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:42,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545261211] [2022-02-10 02:51:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:42,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:42,573 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:42,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545261211] [2022-02-10 02:51:42,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545261211] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:42,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305941416] [2022-02-10 02:51:42,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:42,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:42,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:42,574 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:42,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-10 02:51:42,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:42,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:42,601 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:51:42,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:42,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:42,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305941416] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:42,955 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:42,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:51:42,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817229949] [2022-02-10 02:51:42,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:42,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:51:42,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:42,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:51:42,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:42,956 INFO L87 Difference]: Start difference. First operand 299425 states and 495559 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:45,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:45,101 INFO L93 Difference]: Finished difference Result 317814 states and 525433 transitions. [2022-02-10 02:51:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:51:45,102 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:51:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:45,952 INFO L225 Difference]: With dead ends: 317814 [2022-02-10 02:51:45,952 INFO L226 Difference]: Without dead ends: 317786 [2022-02-10 02:51:45,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:45,953 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 65 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:45,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1728 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 02:51:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317786 states. [2022-02-10 02:51:52,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317786 to 312437. [2022-02-10 02:51:53,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312437 states, 312436 states have (on average 1.6543644138319529) internal successors, (516883), 312436 states have internal predecessors, (516883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312437 states to 312437 states and 516883 transitions. [2022-02-10 02:51:54,442 INFO L78 Accepts]: Start accepts. Automaton has 312437 states and 516883 transitions. Word has length 57 [2022-02-10 02:51:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:54,442 INFO L470 AbstractCegarLoop]: Abstraction has 312437 states and 516883 transitions. [2022-02-10 02:51:54,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 312437 states and 516883 transitions. [2022-02-10 02:51:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:51:55,217 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:55,217 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:55,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:55,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-02-10 02:51:55,418 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:51:55,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:55,418 INFO L85 PathProgramCache]: Analyzing trace with hash 635599983, now seen corresponding path program 111 times [2022-02-10 02:51:55,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:55,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630194689] [2022-02-10 02:51:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:55,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:51:55,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:55,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630194689] [2022-02-10 02:51:55,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630194689] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:55,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747992458] [2022-02-10 02:51:55,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:55,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:55,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:55,677 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:55,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-10 02:51:55,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-02-10 02:51:55,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:55,704 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:51:55,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:51:55,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:51:56,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747992458] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:56,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:56,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:51:56,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382436823] [2022-02-10 02:51:56,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:56,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:51:56,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:56,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:51:56,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:56,091 INFO L87 Difference]: Start difference. First operand 312437 states and 516883 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:51:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:58,337 INFO L93 Difference]: Finished difference Result 333229 states and 550607 transitions. [2022-02-10 02:51:58,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:51:58,347 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:51:58,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:59,399 INFO L225 Difference]: With dead ends: 333229 [2022-02-10 02:51:59,399 INFO L226 Difference]: Without dead ends: 333195 [2022-02-10 02:51:59,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:51:59,399 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 73 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:59,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 1812 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:51:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333195 states. [2022-02-10 02:52:06,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333195 to 326427. [2022-02-10 02:52:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326427 states, 326426 states have (on average 1.653621341437263) internal successors, (539785), 326426 states have internal predecessors, (539785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326427 states to 326427 states and 539785 transitions. [2022-02-10 02:52:08,632 INFO L78 Accepts]: Start accepts. Automaton has 326427 states and 539785 transitions. Word has length 57 [2022-02-10 02:52:08,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:08,632 INFO L470 AbstractCegarLoop]: Abstraction has 326427 states and 539785 transitions. [2022-02-10 02:52:08,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 326427 states and 539785 transitions. [2022-02-10 02:52:09,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:52:09,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:09,240 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:09,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-02-10 02:52:09,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-02-10 02:52:09,461 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:09,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash -405761819, now seen corresponding path program 112 times [2022-02-10 02:52:09,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:09,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925365861] [2022-02-10 02:52:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:09,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:09,807 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:09,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:09,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925365861] [2022-02-10 02:52:09,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925365861] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:09,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392667] [2022-02-10 02:52:09,807 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:52:09,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:09,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:09,809 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:09,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-10 02:52:09,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:52:09,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:09,843 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:09,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:10,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:10,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392667] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:10,333 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:10,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:52:10,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972334265] [2022-02-10 02:52:10,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:10,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:52:10,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:10,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:52:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:52:10,334 INFO L87 Difference]: Start difference. First operand 326427 states and 539785 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:12,496 INFO L93 Difference]: Finished difference Result 332330 states and 549102 transitions. [2022-02-10 02:52:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:52:12,497 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:52:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:13,905 INFO L225 Difference]: With dead ends: 332330 [2022-02-10 02:52:13,906 INFO L226 Difference]: Without dead ends: 332300 [2022-02-10 02:52:13,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:52:13,906 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 63 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:13,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 1708 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:52:14,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332300 states. [2022-02-10 02:52:21,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332300 to 331939. [2022-02-10 02:52:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331939 states, 331938 states have (on average 1.6529713380209556) internal successors, (548684), 331938 states have internal predecessors, (548684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331939 states to 331939 states and 548684 transitions. [2022-02-10 02:52:23,222 INFO L78 Accepts]: Start accepts. Automaton has 331939 states and 548684 transitions. Word has length 57 [2022-02-10 02:52:23,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:23,223 INFO L470 AbstractCegarLoop]: Abstraction has 331939 states and 548684 transitions. [2022-02-10 02:52:23,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:23,223 INFO L276 IsEmpty]: Start isEmpty. Operand 331939 states and 548684 transitions. [2022-02-10 02:52:23,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:52:23,475 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:23,475 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:23,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-02-10 02:52:23,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:23,675 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:23,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:23,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1407460229, now seen corresponding path program 113 times [2022-02-10 02:52:23,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:23,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951675192] [2022-02-10 02:52:23,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:23,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:23,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:23,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951675192] [2022-02-10 02:52:23,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951675192] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:23,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436716509] [2022-02-10 02:52:23,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:52:23,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:23,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:23,943 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:23,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-10 02:52:23,973 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-02-10 02:52:23,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:23,974 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:23,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:24,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:24,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436716509] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:24,332 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:24,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:52:24,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626536053] [2022-02-10 02:52:24,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:24,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:52:24,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:24,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:52:24,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:52:24,333 INFO L87 Difference]: Start difference. First operand 331939 states and 548684 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:26,657 INFO L93 Difference]: Finished difference Result 341404 states and 563872 transitions. [2022-02-10 02:52:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:52:26,658 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:52:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:27,660 INFO L225 Difference]: With dead ends: 341404 [2022-02-10 02:52:27,660 INFO L226 Difference]: Without dead ends: 341374 [2022-02-10 02:52:27,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:52:27,660 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 62 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:27,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1688 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:52:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341374 states. [2022-02-10 02:52:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341374 to 341021. [2022-02-10 02:52:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341021 states, 341020 states have (on average 1.652284323500088) internal successors, (563462), 341020 states have internal predecessors, (563462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:37,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341021 states to 341021 states and 563462 transitions. [2022-02-10 02:52:37,071 INFO L78 Accepts]: Start accepts. Automaton has 341021 states and 563462 transitions. Word has length 57 [2022-02-10 02:52:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:37,072 INFO L470 AbstractCegarLoop]: Abstraction has 341021 states and 563462 transitions. [2022-02-10 02:52:37,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:37,072 INFO L276 IsEmpty]: Start isEmpty. Operand 341021 states and 563462 transitions. [2022-02-10 02:52:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:52:37,334 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:37,334 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:37,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-02-10 02:52:37,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:37,535 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1082517767, now seen corresponding path program 114 times [2022-02-10 02:52:37,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:37,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199912637] [2022-02-10 02:52:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:37,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:38,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:38,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199912637] [2022-02-10 02:52:38,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199912637] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:38,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216464463] [2022-02-10 02:52:38,248 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:52:38,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:38,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:38,249 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:38,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-10 02:52:38,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-10 02:52:38,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:52:38,280 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:38,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:38,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:52:38,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216464463] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:38,636 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:38,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:52:38,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901364299] [2022-02-10 02:52:38,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:38,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:52:38,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:52:38,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:52:38,636 INFO L87 Difference]: Start difference. First operand 341021 states and 563462 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:40,526 INFO L93 Difference]: Finished difference Result 351321 states and 580004 transitions. [2022-02-10 02:52:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:52:40,527 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:52:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:41,958 INFO L225 Difference]: With dead ends: 351321 [2022-02-10 02:52:41,959 INFO L226 Difference]: Without dead ends: 351291 [2022-02-10 02:52:41,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:52:41,959 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 61 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:41,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 1668 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:52:42,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351291 states. [2022-02-10 02:52:50,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351291 to 350946. [2022-02-10 02:52:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350946 states, 350945 states have (on average 1.6515465386314094) internal successors, (579602), 350945 states have internal predecessors, (579602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350946 states to 350946 states and 579602 transitions. [2022-02-10 02:52:53,436 INFO L78 Accepts]: Start accepts. Automaton has 350946 states and 579602 transitions. Word has length 57 [2022-02-10 02:52:53,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:52:53,436 INFO L470 AbstractCegarLoop]: Abstraction has 350946 states and 579602 transitions. [2022-02-10 02:52:53,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:53,436 INFO L276 IsEmpty]: Start isEmpty. Operand 350946 states and 579602 transitions. [2022-02-10 02:52:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-10 02:52:53,797 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:52:53,797 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:52:53,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-02-10 02:52:54,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-02-10 02:52:54,020 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:52:54,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:52:54,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1841232823, now seen corresponding path program 115 times [2022-02-10 02:52:54,021 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:52:54,021 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759847664] [2022-02-10 02:52:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:52:54,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:52:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:52:54,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:52:54,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759847664] [2022-02-10 02:52:54,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759847664] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:52:54,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188377324] [2022-02-10 02:52:54,347 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:52:54,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:52:54,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:52:54,348 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:52:54,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-10 02:52:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:52:54,382 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-10 02:52:54,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:52:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:52:54,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:52:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 02:52:54,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188377324] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:52:54,766 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:52:54,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2022-02-10 02:52:54,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849952926] [2022-02-10 02:52:54,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:52:54,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 02:52:54,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:52:54,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 02:52:54,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:52:54,766 INFO L87 Difference]: Start difference. First operand 350946 states and 579602 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:52:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:52:57,205 INFO L93 Difference]: Finished difference Result 362155 states and 597593 transitions. [2022-02-10 02:52:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:52:57,207 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-10 02:52:57,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:52:58,665 INFO L225 Difference]: With dead ends: 362155 [2022-02-10 02:52:58,666 INFO L226 Difference]: Without dead ends: 362125 [2022-02-10 02:52:58,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-02-10 02:52:58,666 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 69 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 02:52:58,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1735 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 02:52:59,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362125 states. [2022-02-10 02:53:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362125 to 361759. [2022-02-10 02:53:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361759 states, 361758 states have (on average 1.6507444203030754) internal successors, (597170), 361758 states have internal predecessors, (597170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361759 states to 361759 states and 597170 transitions. [2022-02-10 02:53:08,520 INFO L78 Accepts]: Start accepts. Automaton has 361759 states and 597170 transitions. Word has length 57 [2022-02-10 02:53:08,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:08,520 INFO L470 AbstractCegarLoop]: Abstraction has 361759 states and 597170 transitions. [2022-02-10 02:53:08,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 361759 states and 597170 transitions. [2022-02-10 02:53:09,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-10 02:53:09,340 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:09,340 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:09,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-02-10 02:53:09,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:09,555 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:09,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:09,556 INFO L85 PathProgramCache]: Analyzing trace with hash -113606565, now seen corresponding path program 116 times [2022-02-10 02:53:09,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:09,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326670044] [2022-02-10 02:53:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:09,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 51 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:09,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:09,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326670044] [2022-02-10 02:53:09,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326670044] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:09,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764373127] [2022-02-10 02:53:09,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:53:09,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:09,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:09,630 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:09,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-10 02:53:09,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:53:09,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:09,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:53:09,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 51 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:09,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 51 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:09,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764373127] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:09,916 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:09,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2022-02-10 02:53:09,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129965141] [2022-02-10 02:53:09,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:09,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 02:53:09,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:09,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 02:53:09,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:53:09,917 INFO L87 Difference]: Start difference. First operand 361759 states and 597170 transitions. Second operand has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:12,558 INFO L93 Difference]: Finished difference Result 472993 states and 775220 transitions. [2022-02-10 02:53:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:53:12,558 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-02-10 02:53:12,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:14,437 INFO L225 Difference]: With dead ends: 472993 [2022-02-10 02:53:14,437 INFO L226 Difference]: Without dead ends: 472975 [2022-02-10 02:53:14,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:53:14,438 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 160 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:14,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 206 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:53:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472975 states. [2022-02-10 02:53:25,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472975 to 361756. [2022-02-10 02:53:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361756 states, 361755 states have (on average 1.6507470525631989) internal successors, (597166), 361755 states have internal predecessors, (597166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361756 states to 361756 states and 597166 transitions. [2022-02-10 02:53:27,381 INFO L78 Accepts]: Start accepts. Automaton has 361756 states and 597166 transitions. Word has length 60 [2022-02-10 02:53:27,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:27,381 INFO L470 AbstractCegarLoop]: Abstraction has 361756 states and 597166 transitions. [2022-02-10 02:53:27,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:27,381 INFO L276 IsEmpty]: Start isEmpty. Operand 361756 states and 597166 transitions. [2022-02-10 02:53:28,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-10 02:53:28,181 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:28,182 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:28,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:28,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:28,383 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:28,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1895988005, now seen corresponding path program 117 times [2022-02-10 02:53:28,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:28,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427132076] [2022-02-10 02:53:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:28,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:28,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:28,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427132076] [2022-02-10 02:53:28,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427132076] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:28,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420554264] [2022-02-10 02:53:28,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:53:28,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:28,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:28,461 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:28,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-10 02:53:28,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 02:53:28,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:28,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:53:28,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:28,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:28,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420554264] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:28,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:28,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:53:28,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138436020] [2022-02-10 02:53:28,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:28,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:53:28,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:28,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:53:28,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:53:28,768 INFO L87 Difference]: Start difference. First operand 361756 states and 597166 transitions. Second operand has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 22 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:33,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:33,212 INFO L93 Difference]: Finished difference Result 583455 states and 953094 transitions. [2022-02-10 02:53:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-10 02:53:33,212 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 22 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-02-10 02:53:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:35,115 INFO L225 Difference]: With dead ends: 583455 [2022-02-10 02:53:35,115 INFO L226 Difference]: Without dead ends: 583435 [2022-02-10 02:53:35,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3845 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2722, Invalid=7378, Unknown=0, NotChecked=0, Total=10100 [2022-02-10 02:53:35,116 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 700 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:35,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 572 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:53:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583435 states. [2022-02-10 02:53:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583435 to 407733. [2022-02-10 02:53:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407733 states, 407732 states have (on average 1.64335396780238) internal successors, (670048), 407732 states have internal predecessors, (670048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407733 states to 407733 states and 670048 transitions. [2022-02-10 02:53:49,362 INFO L78 Accepts]: Start accepts. Automaton has 407733 states and 670048 transitions. Word has length 60 [2022-02-10 02:53:49,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:53:49,362 INFO L470 AbstractCegarLoop]: Abstraction has 407733 states and 670048 transitions. [2022-02-10 02:53:49,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 22 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:49,362 INFO L276 IsEmpty]: Start isEmpty. Operand 407733 states and 670048 transitions. [2022-02-10 02:53:50,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-10 02:53:50,177 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:53:50,177 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:53:50,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-02-10 02:53:50,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2022-02-10 02:53:50,378 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:53:50,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:53:50,378 INFO L85 PathProgramCache]: Analyzing trace with hash 746071963, now seen corresponding path program 118 times [2022-02-10 02:53:50,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:53:50,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895255379] [2022-02-10 02:53:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:53:50,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:53:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:53:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 38 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:50,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:53:50,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895255379] [2022-02-10 02:53:50,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895255379] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:53:50,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041120672] [2022-02-10 02:53:50,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:53:50,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:53:50,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:53:50,452 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:53:50,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-10 02:53:50,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:53:50,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:53:50,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:53:50,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:53:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 38 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:50,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:53:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 38 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:53:50,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041120672] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:53:50,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:53:50,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:53:50,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65550510] [2022-02-10 02:53:50,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:53:50,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:53:50,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:53:50,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:53:50,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:53:50,748 INFO L87 Difference]: Start difference. First operand 407733 states and 670048 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:53:55,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:53:55,436 INFO L93 Difference]: Finished difference Result 533256 states and 872133 transitions. [2022-02-10 02:53:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 02:53:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-02-10 02:53:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:53:58,064 INFO L225 Difference]: With dead ends: 533256 [2022-02-10 02:53:58,064 INFO L226 Difference]: Without dead ends: 533247 [2022-02-10 02:53:58,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=951, Invalid=2589, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 02:53:58,065 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 533 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:53:58,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 552 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:53:58,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533247 states. [2022-02-10 02:54:09,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533247 to 443222. [2022-02-10 02:54:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443222 states, 443221 states have (on average 1.646731540247416) internal successors, (729866), 443221 states have internal predecessors, (729866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443222 states to 443222 states and 729866 transitions. [2022-02-10 02:54:12,256 INFO L78 Accepts]: Start accepts. Automaton has 443222 states and 729866 transitions. Word has length 60 [2022-02-10 02:54:12,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:12,256 INFO L470 AbstractCegarLoop]: Abstraction has 443222 states and 729866 transitions. [2022-02-10 02:54:12,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 443222 states and 729866 transitions. [2022-02-10 02:54:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-10 02:54:12,564 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:12,564 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:12,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-02-10 02:54:12,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-02-10 02:54:12,764 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:12,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1913512233, now seen corresponding path program 119 times [2022-02-10 02:54:12,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:12,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739686825] [2022-02-10 02:54:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:12,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 31 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:12,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:12,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739686825] [2022-02-10 02:54:12,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739686825] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:12,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296946656] [2022-02-10 02:54:12,836 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:54:12,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:12,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:12,837 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:12,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-10 02:54:12,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 02:54:12,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:12,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:54:12,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 31 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:13,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 31 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:13,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296946656] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:13,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:13,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:54:13,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465018698] [2022-02-10 02:54:13,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:13,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:54:13,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:13,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:54:13,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:54:13,636 INFO L87 Difference]: Start difference. First operand 443222 states and 729866 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:17,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:17,047 INFO L93 Difference]: Finished difference Result 559456 states and 912212 transitions. [2022-02-10 02:54:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 02:54:17,047 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-02-10 02:54:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:19,199 INFO L225 Difference]: With dead ends: 559456 [2022-02-10 02:54:19,200 INFO L226 Difference]: Without dead ends: 559445 [2022-02-10 02:54:19,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=776, Invalid=2304, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 02:54:19,200 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 526 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:19,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 427 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:54:19,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559445 states. [2022-02-10 02:54:31,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559445 to 448411. [2022-02-10 02:54:32,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448411 states, 448410 states have (on average 1.6474810998862648) internal successors, (738747), 448410 states have internal predecessors, (738747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448411 states to 448411 states and 738747 transitions. [2022-02-10 02:54:36,051 INFO L78 Accepts]: Start accepts. Automaton has 448411 states and 738747 transitions. Word has length 60 [2022-02-10 02:54:36,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:54:36,051 INFO L470 AbstractCegarLoop]: Abstraction has 448411 states and 738747 transitions. [2022-02-10 02:54:36,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:36,052 INFO L276 IsEmpty]: Start isEmpty. Operand 448411 states and 738747 transitions. [2022-02-10 02:54:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-10 02:54:36,464 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:54:36,465 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:54:36,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-02-10 02:54:36,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-02-10 02:54:36,688 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:54:36,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:54:36,689 INFO L85 PathProgramCache]: Analyzing trace with hash -29618661, now seen corresponding path program 120 times [2022-02-10 02:54:36,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:54:36,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294427303] [2022-02-10 02:54:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:54:36,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:54:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:54:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 30 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:36,790 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:54:36,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294427303] [2022-02-10 02:54:36,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294427303] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:54:36,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47274286] [2022-02-10 02:54:36,790 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:54:36,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:54:36,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:54:36,791 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:54:36,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-10 02:54:36,865 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 02:54:36,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:54:36,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:54:36,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:54:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 30 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:37,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:54:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 30 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:54:37,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47274286] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:54:37,246 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:54:37,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:54:37,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474471229] [2022-02-10 02:54:37,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:54:37,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:54:37,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:54:37,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:54:37,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:54:37,247 INFO L87 Difference]: Start difference. First operand 448411 states and 738747 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:54:42,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:54:42,862 INFO L93 Difference]: Finished difference Result 608019 states and 992777 transitions. [2022-02-10 02:54:42,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-10 02:54:42,863 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-02-10 02:54:42,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:54:45,897 INFO L225 Difference]: With dead ends: 608019 [2022-02-10 02:54:45,897 INFO L226 Difference]: Without dead ends: 608005 [2022-02-10 02:54:45,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=634, Invalid=2018, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 02:54:45,898 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 364 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:54:45,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 407 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:54:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608005 states. [2022-02-10 02:54:59,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608005 to 451302. [2022-02-10 02:55:00,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451302 states, 451301 states have (on average 1.6482990288078245) internal successors, (743879), 451301 states have internal predecessors, (743879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:03,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451302 states to 451302 states and 743879 transitions. [2022-02-10 02:55:03,810 INFO L78 Accepts]: Start accepts. Automaton has 451302 states and 743879 transitions. Word has length 60 [2022-02-10 02:55:03,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:55:03,810 INFO L470 AbstractCegarLoop]: Abstraction has 451302 states and 743879 transitions. [2022-02-10 02:55:03,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 451302 states and 743879 transitions. [2022-02-10 02:55:04,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-10 02:55:04,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:55:04,778 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:55:04,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-02-10 02:55:04,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-02-10 02:55:04,991 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 02:55:04,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:55:04,992 INFO L85 PathProgramCache]: Analyzing trace with hash 706127959, now seen corresponding path program 121 times [2022-02-10 02:55:04,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:55:04,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312808689] [2022-02-10 02:55:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:55:04,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:55:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:05,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:55:05,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312808689] [2022-02-10 02:55:05,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312808689] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:55:05,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763280651] [2022-02-10 02:55:05,094 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:55:05,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:05,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:55:05,096 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:55:05,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-10 02:55:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:55:05,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 02:55:05,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:55:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:05,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:55:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:55:05,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763280651] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:55:05,462 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:55:05,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-02-10 02:55:05,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231296642] [2022-02-10 02:55:05,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:55:05,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 02:55:05,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:55:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 02:55:05,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:55:05,464 INFO L87 Difference]: Start difference. First operand 451302 states and 743879 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:55:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:55:10,522 INFO L93 Difference]: Finished difference Result 614992 states and 1007908 transitions. [2022-02-10 02:55:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 02:55:10,522 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-02-10 02:55:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:55:12,539 INFO L225 Difference]: With dead ends: 614992 [2022-02-10 02:55:12,539 INFO L226 Difference]: Without dead ends: 614975 [2022-02-10 02:55:12,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=542, Invalid=1810, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 02:55:12,540 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 323 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:55:12,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 360 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:55:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614975 states. [2022-02-10 02:55:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614975 to 452850. [2022-02-10 02:55:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452850 states, 452849 states have (on average 1.648564974196697) internal successors, (746551), 452849 states have internal predecessors, (746551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-10 02:55:30,161 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 02:55:30,162 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 02:55:30,163 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-10 02:55:30,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-02-10 02:55:30,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:55:30,388 WARN L594 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (379396 states constructed, input type DoubleDeckerAutomaton). [2022-02-10 02:55:30,390 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 02:55:30,390 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 02:55:30,391 INFO L732 BasicCegarLoop]: Path program histogram: [121, 2, 2, 1] [2022-02-10 02:55:30,393 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 02:55:30,393 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 02:55:30,413 INFO L202 PluginConnector]: Adding new model loop-lockstep-example.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 02:55:30 BasicIcfg [2022-02-10 02:55:30,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 02:55:30,413 INFO L158 Benchmark]: Toolchain (without parser) took 622982.64ms. Allocated memory was 184.5MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 149.4MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 4.5GB. Max. memory is 8.0GB. [2022-02-10 02:55:30,414 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.16ms. Allocated memory is still 184.5MB. Free memory was 150.4MB in the beginning and 150.4MB in the end (delta: 74.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 02:55:30,414 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.28ms. Allocated memory is still 184.5MB. Free memory was 149.3MB in the beginning and 147.8MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-10 02:55:30,414 INFO L158 Benchmark]: Boogie Preprocessor took 18.39ms. Allocated memory is still 184.5MB. Free memory was 147.8MB in the beginning and 146.8MB in the end (delta: 939.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 02:55:30,414 INFO L158 Benchmark]: RCFGBuilder took 250.93ms. Allocated memory is still 184.5MB. Free memory was 146.7MB in the beginning and 138.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-10 02:55:30,414 INFO L158 Benchmark]: TraceAbstraction took 622684.35ms. Allocated memory was 184.5MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 137.6MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 4.5GB. Max. memory is 8.0GB. [2022-02-10 02:55:30,414 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 0.16ms. Allocated memory is still 184.5MB. Free memory was 150.4MB in the beginning and 150.4MB in the end (delta: 74.7kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.28ms. Allocated memory is still 184.5MB. Free memory was 149.3MB in the beginning and 147.8MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.39ms. Allocated memory is still 184.5MB. Free memory was 147.8MB in the beginning and 146.8MB in the end (delta: 939.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 250.93ms. Allocated memory is still 184.5MB. Free memory was 146.7MB in the beginning and 138.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 622684.35ms. Allocated memory was 184.5MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 137.6MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 4.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while ReachableStatesComputation was computing reachable states (379396 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (379396 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (379396 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 41 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 622.5s, OverallIterations: 126, TraceHistogramMax: 6, PathProgramHistogramMax: 121, EmptinessCheckTime: 15.3s, AutomataDifference: 169.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, PartialOrderReductionTime: 0.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17665 SdHoareTripleChecker+Valid, 27.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17665 mSDsluCounter, 92728 SdHoareTripleChecker+Invalid, 22.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 97742 mSDsCounter, 3275 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68605 IncrementalHoareTripleChecker+Invalid, 71880 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3275 mSolverCounterUnsat, 6811 mSDtfsCounter, 68605 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14005 GetRequests, 10301 SyntacticMatches, 256 SemanticMatches, 3448 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38735 ImplicationChecksByTransitivity, 29.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=451302occurred in iteration=125, InterpolantAutomatonStates: 3313, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 354.8s AutomataMinimizationTime, 126 MinimizatonAttempts, 1749109 StatesRemovedByMinimization, 125 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 52.1s InterpolantComputationTime, 10812 NumberOfCodeBlocks, 10812 NumberOfCodeBlocksAsserted, 564 NumberOfCheckSat, 15815 ConstructedInterpolants, 0 QuantifiedInterpolants, 95767 SizeOfPredicates, 232 NumberOfNonLiveVariables, 10002 ConjunctsInSsa, 3104 ConjunctsInUnsatCore, 370 InterpolantComputations, 4 PerfectInterpolantSequences, 4311/20467 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 [2022-02-10 02:55:30,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 !SESSION 2022-02-10 02:45:04.861 ----------------------------------------------- eclipse.buildId=unknown java.version=11.0.12 java.vendor=Debian BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/loop-lockstep-example.bpl Command-line arguments: -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/loop-lockstep-example.bpl !ENTRY org.eclipse.osgi 4 0 2022-02-10 02:55:30.652 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/846002554/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/846002554/.metadata/.log.