/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/JoinTheForkingThread.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 20:33:56,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 20:33:56,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 20:33:56,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 20:33:56,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 20:33:56,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 20:33:56,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 20:33:56,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 20:33:56,484 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 20:33:56,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 20:33:56,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 20:33:56,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 20:33:56,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 20:33:56,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 20:33:56,486 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 20:33:56,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 20:33:56,487 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 20:33:56,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 20:33:56,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 20:33:56,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 20:33:56,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 20:33:56,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 20:33:56,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 20:33:56,488 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 20:33:56,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 20:33:56,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 20:33:56,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 20:33:56,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 20:33:56,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 20:33:56,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 20:33:56,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 20:33:56,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:33:56,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 20:33:56,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 20:33:56,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 20:33:56,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 20:33:56,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 20:33:56,490 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 20:33:56,490 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 20:33:56,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 20:33:56,490 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 20:33:56,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 20:33:56,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 20:33:56,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 20:33:56,699 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 20:33:56,700 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 20:33:56,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/JoinTheForkingThread.bpl [2022-03-15 20:33:56,702 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/JoinTheForkingThread.bpl' [2022-03-15 20:33:56,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 20:33:56,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 20:33:56,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 20:33:56,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 20:33:56,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 20:33:56,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:33:56" (1/1) ... [2022-03-15 20:33:56,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:33:56" (1/1) ... [2022-03-15 20:33:56,751 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 20:33:56,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 20:33:56,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 20:33:56,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 20:33:56,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 20:33:56,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:33:56" (1/1) ... [2022-03-15 20:33:56,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:33:56" (1/1) ... [2022-03-15 20:33:56,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:33:56" (1/1) ... [2022-03-15 20:33:56,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:33:56" (1/1) ... [2022-03-15 20:33:56,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:33:56" (1/1) ... [2022-03-15 20:33:56,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:33:56" (1/1) ... [2022-03-15 20:33:56,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:33:56" (1/1) ... [2022-03-15 20:33:56,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 20:33:56,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 20:33:56,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 20:33:56,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 20:33:56,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:33:56" (1/1) ... [2022-03-15 20:33:56,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:33:56,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:33:56,796 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) [2022-03-15 20:33:56,811 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 [2022-03-15 20:33:56,837 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2022-03-15 20:33:56,837 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2022-03-15 20:33:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2022-03-15 20:33:56,838 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-03-15 20:33:56,838 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-15 20:33:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-15 20:33:56,839 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 20:33:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 20:33:56,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 20:33:56,839 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 20:33:56,879 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 20:33:56,881 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 20:33:56,941 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 20:33:56,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 20:33:56,945 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 20:33:56,946 INFO L202 PluginConnector]: Adding new model JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:33:56 BoogieIcfgContainer [2022-03-15 20:33:56,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 20:33:56,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 20:33:56,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 20:33:56,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 20:33:56,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:33:56" (1/2) ... [2022-03-15 20:33:56,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eb3afe and model type JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:33:56, skipping insertion in model container [2022-03-15 20:33:56,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:33:56" (2/2) ... [2022-03-15 20:33:56,960 INFO L111 eAbstractionObserver]: Analyzing ICFG JoinTheForkingThread.bpl [2022-03-15 20:33:56,964 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 20:33:56,964 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 20:33:56,964 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-03-15 20:33:56,965 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 20:33:56,990 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:33:56,990 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:33:56,995 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:33:56,996 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:33:57,000 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_localVar not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:33:57,000 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_nondet not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:33:57,000 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:33:57,003 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:33:57,005 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_localVar not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:33:57,005 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_nondet not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:33:57,006 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:33:57,019 INFO L148 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-03-15 20:33:57,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 20:33:57,088 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 20:33:57,089 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-03-15 20:33:57,111 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 20:33:57,121 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 25 transitions, 78 flow [2022-03-15 20:33:57,124 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 25 transitions, 78 flow [2022-03-15 20:33:57,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 25 transitions, 78 flow [2022-03-15 20:33:57,147 INFO L129 PetriNetUnfolder]: 1/21 cut-off events. [2022-03-15 20:33:57,147 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-03-15 20:33:57,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 21 events. 1/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 15 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 10. Up to 3 conditions per place. [2022-03-15 20:33:57,152 INFO L116 LiptonReduction]: Number of co-enabled transitions 14 [2022-03-15 20:33:57,272 INFO L131 LiptonReduction]: Checked pairs total: 53 [2022-03-15 20:33:57,272 INFO L133 LiptonReduction]: Total number of compositions: 6 [2022-03-15 20:33:57,279 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 19 transitions, 66 flow [2022-03-15 20:33:57,288 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:33:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:33:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-03-15 20:33:57,311 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:33:57,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-03-15 20:33:57,312 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [barErr0ASSERT_VIOLATIONASSERT, fooErr1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:33:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:33:57,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1704907288, now seen corresponding path program 1 times [2022-03-15 20:33:57,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:33:57,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122615770] [2022-03-15 20:33:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:33:57,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:33:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:33:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:33:57,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:33:57,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122615770] [2022-03-15 20:33:57,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122615770] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:33:57,436 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:33:57,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:33:57,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [876036463] [2022-03-15 20:33:57,438 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:33:57,440 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:33:57,446 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2022-03-15 20:33:57,447 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:33:57,449 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:33:57,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:33:57,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:33:57,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:33:57,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:33:57,501 INFO L87 Difference]: Start difference. First operand has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:33:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:33:57,513 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-03-15 20:33:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:33:57,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-03-15 20:33:57,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:33:57,520 INFO L225 Difference]: With dead ends: 9 [2022-03-15 20:33:57,520 INFO L226 Difference]: Without dead ends: 9 [2022-03-15 20:33:57,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:33:57,524 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:33:57,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:33:57,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-03-15 20:33:57,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-03-15 20:33:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:33:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-03-15 20:33:57,550 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2022-03-15 20:33:57,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:33:57,550 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-03-15 20:33:57,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:33:57,552 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-03-15 20:33:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-03-15 20:33:57,552 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:33:57,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:33:57,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 20:33:57,553 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting barErr0ASSERT_VIOLATIONASSERT === [barErr0ASSERT_VIOLATIONASSERT, fooErr1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:33:57,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:33:57,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1313372733, now seen corresponding path program 1 times [2022-03-15 20:33:57,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:33:57,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542137441] [2022-03-15 20:33:57,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:33:57,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:33:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 20:33:57,577 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 20:33:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 20:33:57,611 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 20:33:57,611 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 20:33:57,617 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location barErr0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-03-15 20:33:57,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location barErr0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-03-15 20:33:57,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr1INUSE_VIOLATION (3 of 6 remaining) [2022-03-15 20:33:57,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 6 remaining) [2022-03-15 20:33:57,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2022-03-15 20:33:57,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooThread1of1ForFork1Err0INUSE_VIOLATION (0 of 6 remaining) [2022-03-15 20:33:57,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 20:33:57,622 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-15 20:33:57,629 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 20:33:57,629 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 20:33:57,642 INFO L202 PluginConnector]: Adding new model JoinTheForkingThread.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 08:33:57 BasicIcfg [2022-03-15 20:33:57,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 20:33:57,642 INFO L158 Benchmark]: Toolchain (without parser) took 919.81ms. Allocated memory was 192.9MB in the beginning and 244.3MB in the end (delta: 51.4MB). Free memory was 150.6MB in the beginning and 208.9MB in the end (delta: -58.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:33:57,643 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:33:57,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.18ms. Allocated memory is still 192.9MB. Free memory was 150.5MB in the beginning and 149.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 20:33:57,644 INFO L158 Benchmark]: Boogie Preprocessor took 12.41ms. Allocated memory is still 192.9MB. Free memory was 148.9MB in the beginning and 148.1MB in the end (delta: 795.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 20:33:57,644 INFO L158 Benchmark]: RCFGBuilder took 178.67ms. Allocated memory is still 192.9MB. Free memory was 148.1MB in the beginning and 140.2MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-15 20:33:57,644 INFO L158 Benchmark]: TraceAbstraction took 694.01ms. Allocated memory was 192.9MB in the beginning and 244.3MB in the end (delta: 51.4MB). Free memory was 139.7MB in the beginning and 208.9MB in the end (delta: -69.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:33:57,651 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 0.12ms. Allocated memory is still 192.9MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.18ms. Allocated memory is still 192.9MB. Free memory was 150.5MB in the beginning and 149.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.41ms. Allocated memory is still 192.9MB. Free memory was 148.9MB in the beginning and 148.1MB in the end (delta: 795.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 178.67ms. Allocated memory is still 192.9MB. Free memory was 148.1MB in the beginning and 140.2MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 694.01ms. Allocated memory was 192.9MB in the beginning and 244.3MB in the end (delta: 51.4MB). Free memory was 139.7MB in the beginning and 208.9MB in the end (delta: -69.2MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 29 PlacesBefore, 23 PlacesAfterwards, 25 TransitionsBefore, 19 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 53 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 53, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 53, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 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: 45]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 x := 0; [L18] 0 g := 0; VAL [g=0, x=0] [L20] FORK 0 fork 1 foo(x); VAL [g=0, n=0, x=0] [L29] FORK 1 fork 2 bar(n); VAL [g=0, n=0, n=0, x=0] [L40] 2 res := 23; VAL [g=0, n=0, n=0, res=23, x=0] [L30] 1 g := g + 1; [L31] 1 res := 23; [L44] JOIN 1 join nondet assign localVar; VAL [g=1, localVar=23, n=0, n=0, nondet=1, res=23, res=23, x=0] [L45] 2 assert false; VAL [g=1, localVar=23, n=0, n=0, nondet=1, res=23, res=23, x=0] - UnprovableResult [Line: 26]: 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. - UnprovableResult [Line: 23]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - 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. - UnprovableResult [Line: 26]: 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 5 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 2 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 RESULT: Ultimate proved your program to be incorrect! [2022-03-15 20:33:57,676 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 Received shutdown request...