/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ForkInLoop02-Incrementer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 23:59:08,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 23:59:08,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 23:59:08,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 23:59:08,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-10 23:59:08,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 23:59:08,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 23:59:08,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 23:59:08,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 23:59:08,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 23:59:08,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 23:59:08,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 23:59:08,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 23:59:08,354 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 23:59:08,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 23:59:08,355 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 23:59:08,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 23:59:08,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 23:59:08,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 23:59:08,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 23:59:08,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 23:59:08,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 23:59:08,357 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 23:59:08,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 23:59:08,357 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 23:59:08,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 23:59:08,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 23:59:08,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 23:59:08,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 23:59:08,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 23:59:08,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:59:08,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 23:59:08,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 23:59:08,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 23:59:08,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 23:59:08,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 23:59:08,359 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 23:59:08,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 23:59:08,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 23:59:08,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 23:59:08,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 23:59:08,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 23:59:08,575 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 23:59:08,585 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 23:59:08,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInLoop02-Incrementer.bpl [2022-02-10 23:59:08,586 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInLoop02-Incrementer.bpl' [2022-02-10 23:59:08,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 23:59:08,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 23:59:08,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 23:59:08,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 23:59:08,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 23:59:08,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:08" (1/1) ... [2022-02-10 23:59:08,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:08" (1/1) ... [2022-02-10 23:59:08,642 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 23:59:08,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 23:59:08,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 23:59:08,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 23:59:08,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 23:59:08,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:08" (1/1) ... [2022-02-10 23:59:08,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:08" (1/1) ... [2022-02-10 23:59:08,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:08" (1/1) ... [2022-02-10 23:59:08,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:08" (1/1) ... [2022-02-10 23:59:08,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:08" (1/1) ... [2022-02-10 23:59:08,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:08" (1/1) ... [2022-02-10 23:59:08,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:08" (1/1) ... [2022-02-10 23:59:08,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 23:59:08,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 23:59:08,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 23:59:08,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 23:59:08,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:08" (1/1) ... [2022-02-10 23:59:08,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:59:08,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:08,675 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 23:59:08,685 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 23:59:08,703 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-02-10 23:59:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-10 23:59:08,703 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-10 23:59:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 23:59:08,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 23:59:08,704 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 23:59:08,733 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 23:59:08,734 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 23:59:08,795 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 23:59:08,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 23:59:08,800 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-10 23:59:08,801 INFO L202 PluginConnector]: Adding new model ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:59:08 BoogieIcfgContainer [2022-02-10 23:59:08,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 23:59:08,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 23:59:08,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 23:59:08,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 23:59:08,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:08" (1/2) ... [2022-02-10 23:59:08,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3a363a and model type ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:59:08, skipping insertion in model container [2022-02-10 23:59:08,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:59:08" (2/2) ... [2022-02-10 23:59:08,815 INFO L112 eAbstractionObserver]: Analyzing ICFG ForkInLoop02-Incrementer.bpl [2022-02-10 23:59:08,822 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 23:59:08,822 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 23:59:08,822 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 23:59:08,822 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 23:59:08,851 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-10 23:59:08,883 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:59:08,891 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, 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 23:59:08,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 23:59:08,898 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 10 transitions, 25 flow [2022-02-10 23:59:08,909 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 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 23:59:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 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 23:59:08,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-02-10 23:59:08,914 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:08,915 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-02-10 23:59:08,915 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT] === [2022-02-10 23:59:08,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash 41972228, now seen corresponding path program 1 times [2022-02-10 23:59:08,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:08,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956164693] [2022-02-10 23:59:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:08,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:59:08,974 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 23:59:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:59:08,994 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 23:59:08,995 INFO L629 BasicCegarLoop]: Counterexample is feasible [2022-02-10 23:59:08,996 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2022-02-10 23:59:08,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-02-10 23:59:08,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (0 of 3 remaining) [2022-02-10 23:59:08,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 23:59:09,000 INFO L733 BasicCegarLoop]: Path program histogram: [1] [2022-02-10 23:59:09,001 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-10 23:59:09,001 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-02-10 23:59:09,006 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-10 23:59:09,007 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:59:09,008 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, 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 23:59:09,008 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-10 23:59:09,009 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 42 flow [2022-02-10 23:59:09,021 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-02-10 23:59:09,022 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:09,022 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-02-10 23:59:09,022 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT] === [2022-02-10 23:59:09,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash 56290799, now seen corresponding path program 1 times [2022-02-10 23:59:09,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:09,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258157218] [2022-02-10 23:59:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:09,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:09,065 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 23:59:09,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:09,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258157218] [2022-02-10 23:59:09,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258157218] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:59:09,066 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:59:09,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 23:59:09,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241922257] [2022-02-10 23:59:09,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:59:09,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 23:59:09,069 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 23:59:09,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 23:59:09,093 INFO L87 Difference]: Start difference. First operand has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:09,159 INFO L93 Difference]: Finished difference Result 101 states and 221 transitions. [2022-02-10 23:59:09,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 23:59:09,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-02-10 23:59:09,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:09,182 INFO L225 Difference]: With dead ends: 101 [2022-02-10 23:59:09,182 INFO L226 Difference]: Without dead ends: 99 [2022-02-10 23:59:09,183 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 23:59:09,185 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:09,187 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 20 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:59:09,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-10 23:59:09,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-02-10 23:59:09,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 2.369565217391304) internal successors, (218), 98 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 218 transitions. [2022-02-10 23:59:09,248 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 218 transitions. Word has length 5 [2022-02-10 23:59:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:09,254 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 218 transitions. [2022-02-10 23:59:09,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 218 transitions. [2022-02-10 23:59:09,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-10 23:59:09,255 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:09,255 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-02-10 23:59:09,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 23:59:09,255 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT] === [2022-02-10 23:59:09,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:09,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1739256278, now seen corresponding path program 1 times [2022-02-10 23:59:09,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:09,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192564160] [2022-02-10 23:59:09,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:09,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:59:09,262 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 23:59:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:59:09,268 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 23:59:09,269 INFO L629 BasicCegarLoop]: Counterexample is feasible [2022-02-10 23:59:09,269 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2022-02-10 23:59:09,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2022-02-10 23:59:09,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2022-02-10 23:59:09,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2022-02-10 23:59:09,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 23:59:09,270 INFO L733 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-10 23:59:09,271 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-10 23:59:09,271 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-02-10 23:59:09,297 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-10 23:59:09,298 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:59:09,299 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, 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 23:59:09,299 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-10 23:59:09,300 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 20 transitions, 61 flow [2022-02-10 23:59:09,352 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-02-10 23:59:09,354 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:09,354 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-02-10 23:59:09,354 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 23:59:09,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash 75380999, now seen corresponding path program 1 times [2022-02-10 23:59:09,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:09,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515359754] [2022-02-10 23:59:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:09,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:09,373 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 23:59:09,373 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:09,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515359754] [2022-02-10 23:59:09,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515359754] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:59:09,374 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:59:09,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 23:59:09,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706017767] [2022-02-10 23:59:09,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:59:09,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 23:59:09,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 23:59:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 23:59:09,376 INFO L87 Difference]: Start difference. First operand has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:09,424 INFO L93 Difference]: Finished difference Result 558 states and 1683 transitions. [2022-02-10 23:59:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 23:59:09,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-02-10 23:59:09,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:09,431 INFO L225 Difference]: With dead ends: 558 [2022-02-10 23:59:09,431 INFO L226 Difference]: Without dead ends: 556 [2022-02-10 23:59:09,432 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 23:59:09,435 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:09,436 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 24 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:59:09,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-02-10 23:59:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2022-02-10 23:59:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 538 states have (on average 3.1226765799256504) internal successors, (1680), 555 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1680 transitions. [2022-02-10 23:59:09,480 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1680 transitions. Word has length 5 [2022-02-10 23:59:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:09,480 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1680 transitions. [2022-02-10 23:59:09,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1680 transitions. [2022-02-10 23:59:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-10 23:59:09,481 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:09,481 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:09,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 23:59:09,481 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 23:59:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:09,482 INFO L85 PathProgramCache]: Analyzing trace with hash -592901609, now seen corresponding path program 1 times [2022-02-10 23:59:09,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:09,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957497169] [2022-02-10 23:59:09,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:09,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:09,534 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 23:59:09,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:09,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957497169] [2022-02-10 23:59:09,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957497169] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:09,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111590249] [2022-02-10 23:59:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:09,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:09,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:09,537 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 23:59:09,551 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 23:59:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:09,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 23:59:09,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:09,617 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 23:59:09,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:09,636 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 23:59:09,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111590249] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:09,637 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:09,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-10 23:59:09,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031438275] [2022-02-10 23:59:09,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:09,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:59:09,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:09,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:59:09,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:59:09,638 INFO L87 Difference]: Start difference. First operand 556 states and 1680 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:09,678 INFO L93 Difference]: Finished difference Result 643 states and 1752 transitions. [2022-02-10 23:59:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 23:59:09,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-02-10 23:59:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:09,682 INFO L225 Difference]: With dead ends: 643 [2022-02-10 23:59:09,682 INFO L226 Difference]: Without dead ends: 613 [2022-02-10 23:59:09,683 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:59:09,685 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:09,685 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 31 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:59:09,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-02-10 23:59:09,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 541. [2022-02-10 23:59:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 526 states have (on average 2.946768060836502) internal successors, (1550), 540 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1550 transitions. [2022-02-10 23:59:09,709 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1550 transitions. Word has length 8 [2022-02-10 23:59:09,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:09,710 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 1550 transitions. [2022-02-10 23:59:09,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:09,710 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1550 transitions. [2022-02-10 23:59:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-10 23:59:09,711 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:09,711 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:09,738 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 23:59:09,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:09,942 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 23:59:09,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1555264738, now seen corresponding path program 1 times [2022-02-10 23:59:09,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:09,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722715067] [2022-02-10 23:59:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:09,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:59:09,951 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 23:59:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:59:09,956 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 23:59:09,956 INFO L629 BasicCegarLoop]: Counterexample is feasible [2022-02-10 23:59:09,956 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2022-02-10 23:59:09,956 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (3 of 5 remaining) [2022-02-10 23:59:09,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (2 of 5 remaining) [2022-02-10 23:59:09,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2022-02-10 23:59:09,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (0 of 5 remaining) [2022-02-10 23:59:09,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-10 23:59:09,957 INFO L733 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-10 23:59:09,958 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-10 23:59:09,958 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-02-10 23:59:09,963 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-10 23:59:09,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:59:09,965 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, 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 23:59:09,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-02-10 23:59:09,965 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 25 transitions, 82 flow [2022-02-10 23:59:10,049 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-02-10 23:59:10,056 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:10,056 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-02-10 23:59:10,057 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:59:10,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:10,058 INFO L85 PathProgramCache]: Analyzing trace with hash 99242212, now seen corresponding path program 1 times [2022-02-10 23:59:10,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:10,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172849456] [2022-02-10 23:59:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:10,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:10,095 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 23:59:10,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:10,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172849456] [2022-02-10 23:59:10,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172849456] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:59:10,095 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:59:10,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 23:59:10,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056759963] [2022-02-10 23:59:10,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:59:10,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 23:59:10,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:10,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 23:59:10,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 23:59:10,108 INFO L87 Difference]: Start difference. First operand has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:10,183 INFO L93 Difference]: Finished difference Result 2904 states and 11111 transitions. [2022-02-10 23:59:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 23:59:10,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-02-10 23:59:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:10,203 INFO L225 Difference]: With dead ends: 2904 [2022-02-10 23:59:10,203 INFO L226 Difference]: Without dead ends: 2902 [2022-02-10 23:59:10,204 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 23:59:10,206 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:10,206 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:59:10,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2022-02-10 23:59:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2902. [2022-02-10 23:59:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2861 states have (on average 3.88255854596295) internal successors, (11108), 2901 states have internal predecessors, (11108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 11108 transitions. [2022-02-10 23:59:10,301 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 11108 transitions. Word has length 5 [2022-02-10 23:59:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:10,301 INFO L470 AbstractCegarLoop]: Abstraction has 2902 states and 11108 transitions. [2022-02-10 23:59:10,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 11108 transitions. [2022-02-10 23:59:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-10 23:59:10,303 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:10,303 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:10,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-10 23:59:10,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:59:10,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:10,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1587158147, now seen corresponding path program 1 times [2022-02-10 23:59:10,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:10,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306397895] [2022-02-10 23:59:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:10,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:10,346 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 23:59:10,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:10,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306397895] [2022-02-10 23:59:10,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306397895] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:10,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35067631] [2022-02-10 23:59:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:10,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:10,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:10,359 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 23:59:10,360 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 23:59:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:10,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 23:59:10,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:10,414 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 23:59:10,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:10,435 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 23:59:10,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35067631] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:10,436 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:10,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-10 23:59:10,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083641927] [2022-02-10 23:59:10,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:10,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:59:10,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:10,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:59:10,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:59:10,437 INFO L87 Difference]: Start difference. First operand 2902 states and 11108 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:10,542 INFO L93 Difference]: Finished difference Result 4458 states and 15343 transitions. [2022-02-10 23:59:10,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 23:59:10,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-02-10 23:59:10,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:10,564 INFO L225 Difference]: With dead ends: 4458 [2022-02-10 23:59:10,564 INFO L226 Difference]: Without dead ends: 4364 [2022-02-10 23:59:10,564 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:59:10,566 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:10,566 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 36 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:59:10,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2022-02-10 23:59:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 3766. [2022-02-10 23:59:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3728 states have (on average 3.6555793991416308) internal successors, (13628), 3765 states have internal predecessors, (13628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 13628 transitions. [2022-02-10 23:59:10,664 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 13628 transitions. Word has length 8 [2022-02-10 23:59:10,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:10,665 INFO L470 AbstractCegarLoop]: Abstraction has 3766 states and 13628 transitions. [2022-02-10 23:59:10,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:59:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 13628 transitions. [2022-02-10 23:59:10,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-10 23:59:10,667 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:10,667 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:10,686 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 23:59:10,886 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,SelfDestructingSolverStorable7 [2022-02-10 23:59:10,886 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONASSERT === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:59:10,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:10,887 INFO L85 PathProgramCache]: Analyzing trace with hash -266683199, now seen corresponding path program 1 times [2022-02-10 23:59:10,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:10,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549296102] [2022-02-10 23:59:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:10,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:59:10,893 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 23:59:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:59:10,902 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 23:59:10,902 INFO L629 BasicCegarLoop]: Counterexample is feasible [2022-02-10 23:59:10,902 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location fooErr0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-02-10 23:59:10,902 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-02-10 23:59:10,902 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2022-02-10 23:59:10,902 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (2 of 6 remaining) [2022-02-10 23:59:10,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2022-02-10 23:59:10,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2022-02-10 23:59:10,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-10 23:59:10,903 INFO L733 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-10 23:59:10,905 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 4 thread instances [2022-02-10 23:59:10,906 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 23:59:10,919 INFO L202 PluginConnector]: Adding new model ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:59:10 BasicIcfg [2022-02-10 23:59:10,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 23:59:10,919 INFO L158 Benchmark]: Toolchain (without parser) took 2302.21ms. Allocated memory was 183.5MB in the beginning and 291.5MB in the end (delta: 108.0MB). Free memory was 142.5MB in the beginning and 168.4MB in the end (delta: -25.9MB). Peak memory consumption was 82.1MB. Max. memory is 8.0GB. [2022-02-10 23:59:10,919 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 183.5MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:59:10,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.73ms. Allocated memory is still 183.5MB. Free memory was 142.5MB in the beginning and 141.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:59:10,920 INFO L158 Benchmark]: Boogie Preprocessor took 9.04ms. Allocated memory is still 183.5MB. Free memory was 141.0MB in the beginning and 140.0MB in the end (delta: 926.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:59:10,920 INFO L158 Benchmark]: RCFGBuilder took 148.38ms. Allocated memory is still 183.5MB. Free memory was 140.0MB in the beginning and 132.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-10 23:59:10,920 INFO L158 Benchmark]: TraceAbstraction took 2115.08ms. Allocated memory was 183.5MB in the beginning and 291.5MB in the end (delta: 108.0MB). Free memory was 131.5MB in the beginning and 168.4MB in the end (delta: -36.8MB). Peak memory consumption was 71.6MB. Max. memory is 8.0GB. [2022-02-10 23:59:10,921 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 0.10ms. Allocated memory is still 183.5MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.73ms. Allocated memory is still 183.5MB. Free memory was 142.5MB in the beginning and 141.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.04ms. Allocated memory is still 183.5MB. Free memory was 141.0MB in the beginning and 140.0MB in the end (delta: 926.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 148.38ms. Allocated memory is still 183.5MB. Free memory was 140.0MB in the beginning and 132.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2115.08ms. Allocated memory was 183.5MB in the beginning and 291.5MB in the end (delta: 108.0MB). Free memory was 131.5MB in the beginning and 168.4MB in the end (delta: -36.8MB). Peak memory consumption was 71.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - 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 - 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 - 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 - CounterExampleResult [Line: 31]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 newid := 0; VAL [newid=0] [L18] 0 n := 0; VAL [n=0, newid=0] [L21] FORK 0 fork newid foo(); VAL [n=0, newid=0] [L30] 1 n := n + 1; VAL [n=1, newid=0] [L22] 0 newid := newid + 1; VAL [n=1, newid=1] [L21] FORK 0 fork newid foo(); VAL [n=1, newid=1] [L30] 2 n := n + 1; VAL [n=2, newid=1] [L22] 0 newid := newid + 1; VAL [n=2, newid=2] [L21] FORK 0 fork newid foo(); VAL [n=2, newid=2] [L30] 3 n := n + 1; VAL [n=3, newid=2] [L31] 1 assert n <= 2; VAL [n=3, newid=2] - UnprovableResult [Line: 20]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 21 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 9 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 22 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=579occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 72 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 67 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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 - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 26 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3766occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 598 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 67 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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 proved your program to be incorrect! [2022-02-10 23:59:10,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...