/usr/lib/jvm/java-1.11.0-openjdk-amd64/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-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/25_stack_longest-2-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:20:57,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:20:57,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:20:57,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:20:57,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:20:57,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:20:57,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:20:57,136 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:20:57,137 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:20:57,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:20:57,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:20:57,138 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:20:57,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:20:57,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:20:57,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:20:57,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:20:57,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:20:57,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:20:57,140 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:20:57,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:20:57,140 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:20:57,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:20:57,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:20:57,143 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:20:57,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:20:57,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:20:57,144 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:20:57,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:20:57,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:20:57,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:20:57,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:20:57,145 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:20:57,145 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:20:57,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:20:57,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:20:57,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:20:57,332 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:20:57,333 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:20:57,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/25_stack_longest-2-pthread.i [2023-11-17 11:20:58,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:20:58,536 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:20:58,537 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-2-pthread.i [2023-11-17 11:20:58,549 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b441ac16/1f853036d7134a75a41866c17d8fb1f2/FLAG56f831c8d [2023-11-17 11:20:58,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b441ac16/1f853036d7134a75a41866c17d8fb1f2 [2023-11-17 11:20:58,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:20:58,568 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:20:58,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:20:58,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:20:58,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:20:58,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:58,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7f73f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58, skipping insertion in model container [2023-11-17 11:20:58,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:58,619 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:20:58,895 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-2-pthread.i[31359,31372] [2023-11-17 11:20:58,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:20:58,919 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:20:58,957 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-2-pthread.i[31359,31372] [2023-11-17 11:20:58,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:20:58,981 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:20:58,981 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:20:58,987 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:20:58,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58 WrapperNode [2023-11-17 11:20:58,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:20:58,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:20:58,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:20:58,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:20:58,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:59,016 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:59,039 INFO L138 Inliner]: procedures = 172, calls = 38, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 133 [2023-11-17 11:20:59,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:20:59,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:20:59,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:20:59,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:20:59,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:59,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:59,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:59,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:59,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:59,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:59,068 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:59,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:59,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:20:59,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:20:59,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:20:59,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:20:59,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (1/1) ... [2023-11-17 11:20:59,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:20:59,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:20:59,106 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) [2023-11-17 11:20:59,114 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 [2023-11-17 11:20:59,129 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-17 11:20:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-17 11:20:59,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:20:59,129 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:20:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:20:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:20:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:20:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:20:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:20:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:20:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:20:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:20:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:20:59,132 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:20:59,245 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:20:59,247 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:20:59,485 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:20:59,605 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:20:59,605 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 11:20:59,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:20:59 BoogieIcfgContainer [2023-11-17 11:20:59,606 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:20:59,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:20:59,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:20:59,611 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:20:59,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:20:58" (1/3) ... [2023-11-17 11:20:59,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c5ba5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:20:59, skipping insertion in model container [2023-11-17 11:20:59,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:20:58" (2/3) ... [2023-11-17 11:20:59,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c5ba5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:20:59, skipping insertion in model container [2023-11-17 11:20:59,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:20:59" (3/3) ... [2023-11-17 11:20:59,614 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longest-2-pthread.i [2023-11-17 11:20:59,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:20:59,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:20:59,626 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:20:59,668 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:20:59,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 36 transitions, 76 flow [2023-11-17 11:20:59,724 INFO L124 PetriNetUnfolderBase]: 5/38 cut-off events. [2023-11-17 11:20:59,725 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:20:59,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 5/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2023-11-17 11:20:59,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 36 transitions, 76 flow [2023-11-17 11:20:59,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 36 transitions, 76 flow [2023-11-17 11:20:59,735 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:20:59,745 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 36 transitions, 76 flow [2023-11-17 11:20:59,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 36 transitions, 76 flow [2023-11-17 11:20:59,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 36 transitions, 76 flow [2023-11-17 11:20:59,756 INFO L124 PetriNetUnfolderBase]: 5/38 cut-off events. [2023-11-17 11:20:59,756 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:20:59,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 5/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2023-11-17 11:20:59,757 INFO L119 LiptonReduction]: Number of co-enabled transitions 240 [2023-11-17 11:21:02,096 INFO L134 LiptonReduction]: Checked pairs total: 272 [2023-11-17 11:21:02,096 INFO L136 LiptonReduction]: Total number of compositions: 31 [2023-11-17 11:21:02,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:21:02,111 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@89fb2d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:21:02,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:21:02,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:21:02,115 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-11-17 11:21:02,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:21:02,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:21:02,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-17 11:21:02,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 11:21:02,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:21:02,119 INFO L85 PathProgramCache]: Analyzing trace with hash 361093655, now seen corresponding path program 1 times [2023-11-17 11:21:02,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:21:02,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829078696] [2023-11-17 11:21:02,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:21:02,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:21:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:21:02,216 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:21:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:21:02,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:21:02,252 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:21:02,253 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 11:21:02,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-17 11:21:02,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 11:21:02,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:21:02,254 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 11:21:02,259 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:21:02,259 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:21:02,270 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-17 11:21:02,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:21:02 BasicIcfg [2023-11-17 11:21:02,275 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:21:02,276 INFO L158 Benchmark]: Toolchain (without parser) took 3707.60ms. Allocated memory is still 306.2MB. Free memory was 257.2MB in the beginning and 175.8MB in the end (delta: 81.4MB). Peak memory consumption was 83.0MB. Max. memory is 8.0GB. [2023-11-17 11:21:02,276 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory was 143.4MB in the beginning and 143.3MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:21:02,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.36ms. Allocated memory is still 306.2MB. Free memory was 257.2MB in the beginning and 236.8MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:21:02,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.10ms. Allocated memory is still 306.2MB. Free memory was 236.8MB in the beginning and 234.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:21:02,277 INFO L158 Benchmark]: Boogie Preprocessor took 29.54ms. Allocated memory is still 306.2MB. Free memory was 234.1MB in the beginning and 232.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:21:02,277 INFO L158 Benchmark]: RCFGBuilder took 535.59ms. Allocated memory is still 306.2MB. Free memory was 232.6MB in the beginning and 198.0MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-11-17 11:21:02,278 INFO L158 Benchmark]: TraceAbstraction took 2667.33ms. Allocated memory is still 306.2MB. Free memory was 197.4MB in the beginning and 175.8MB in the end (delta: 21.7MB). Peak memory consumption was 23.2MB. Max. memory is 8.0GB. [2023-11-17 11:21:02,279 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory was 143.4MB in the beginning and 143.3MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 417.36ms. Allocated memory is still 306.2MB. Free memory was 257.2MB in the beginning and 236.8MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.10ms. Allocated memory is still 306.2MB. Free memory was 236.8MB in the beginning and 234.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.54ms. Allocated memory is still 306.2MB. Free memory was 234.1MB in the beginning and 232.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 535.59ms. Allocated memory is still 306.2MB. Free memory was 232.6MB in the beginning and 198.0MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2667.33ms. Allocated memory is still 306.2MB. Free memory was 197.4MB in the beginning and 175.8MB in the end (delta: 21.7MB). Peak memory consumption was 23.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 34 PlacesBefore, 12 PlacesAfterwards, 36 TransitionsBefore, 11 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 5 FixpointIterations, 0 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 31 TotalNumberOfCompositions, 272 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 272, independent: 272, independent conditional: 0, independent unconditional: 272, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 130, independent: 130, independent conditional: 0, independent unconditional: 130, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 130, independent: 130, independent conditional: 0, independent unconditional: 130, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 272, independent: 142, independent conditional: 0, independent unconditional: 142, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 130, unknown conditional: 0, unknown unconditional: 130] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 736]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L688] 0 int memory[(2*960+1)]; [L689] 0 int next_alloc_idx = 1; [L690] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 int top; [L746] 0 pthread_mutex_t m2 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L747] 0 int state = 0; [L765] 0 pthread_t t; VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, t={5:0}, top=0] [L766] COND TRUE 0 1 [L766] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, t={5:0}, top=0] [L753] 1 case 0: [L754] CALL 1 EBStack_init() [L706] 1 top = 0 [L754] RET 1 EBStack_init() [L755] 1 state = 1 [L756] 1 case 1: [L758] CALL 1 push_loop() [L739] 1 int r = -1; [L740] 1 int arg = __VERIFIER_nondet_int(); [L741] COND TRUE 1 1 [L742] CALL, EXPR 1 push(arg) [L715] 1 int oldTop = -1, newTop = -1; [L716] CALL, EXPR 1 index_malloc() [L693] 1 int curr_alloc_idx = -1; [L695] COND FALSE 1 !(next_alloc_idx+2-1 > (2*960+1)) [L699] 1 curr_alloc_idx = next_alloc_idx [L700] 1 next_alloc_idx += 2 [L703] 1 return curr_alloc_idx; [L716] RET, EXPR 1 index_malloc() [L716] 1 newTop = index_malloc() [L717] COND FALSE 1 !(newTop == 0) [L720] 1 memory[newTop+0] = d [L722] 1 oldTop = top [L723] 1 memory[newTop+1] = oldTop [L725] 1 top = newTop [L728] 1 return 1; [L742] RET, EXPR 1 push(arg) [L742] 1 r = push(arg) [L743] CALL 1 __VERIFIER_atomic_assert(r) [L736] EXPR 1 !r || !isEmpty() [L736] CALL, EXPR 1 isEmpty() [L709] COND FALSE 1 !(top == 0) [L712] 1 return 0; [L736] RET, EXPR 1 isEmpty() [L736] EXPR 1 !r || !isEmpty() [L736] COND TRUE 1 !(!(!r || !isEmpty())) [L736] 1 reach_error() VAL [\old(r)=1, m2={4:0}, m={3:0}, next_alloc_idx=3, r=1, state=1, top=1] - UnprovableResult [Line: 766]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 58 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-17 11:21:02,294 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...