/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/03-practical_07-nonterm.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 17:14:38,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 17:14:38,990 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-VariableLbe.epf [2023-08-25 17:14:38,994 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 17:14:38,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 17:14:39,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 17:14:39,026 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 17:14:39,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 17:14:39,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 17:14:39,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 17:14:39,031 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 17:14:39,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 17:14:39,031 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 17:14:39,032 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 17:14:39,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 17:14:39,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 17:14:39,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 17:14:39,033 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 17:14:39,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 17:14:39,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 17:14:39,034 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 17:14:39,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 17:14:39,037 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 17:14:39,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 17:14:39,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 17:14:39,038 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 17:14:39,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 17:14:39,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:14:39,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 17:14:39,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 17:14:39,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 17:14:39,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 17:14:39,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 17:14:39,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 17:14:39,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 17:14:39,040 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 17:14:39,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 17:14:39,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 17:14:39,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 17:14:39,380 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 17:14:39,380 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 17:14:39,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/03-practical_07-nonterm.i [2023-08-25 17:14:40,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 17:14:40,879 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 17:14:40,879 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/03-practical_07-nonterm.i [2023-08-25 17:14:40,899 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3beee104/7b85c97a8980490abc78ef76cd54e5c4/FLAG0195fb97f [2023-08-25 17:14:40,914 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3beee104/7b85c97a8980490abc78ef76cd54e5c4 [2023-08-25 17:14:40,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 17:14:40,920 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 17:14:40,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 17:14:40,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 17:14:40,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 17:14:40,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:14:40" (1/1) ... [2023-08-25 17:14:40,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b5cd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:40, skipping insertion in model container [2023-08-25 17:14:40,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:14:40" (1/1) ... [2023-08-25 17:14:40,977 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 17:14:41,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:14:41,385 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 17:14:41,399 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:14:41,400 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:14:41,418 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-25 17:14:41,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:14:41,482 INFO L206 MainTranslator]: Completed translation [2023-08-25 17:14:41,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41 WrapperNode [2023-08-25 17:14:41,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 17:14:41,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 17:14:41,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 17:14:41,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 17:14:41,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (1/1) ... [2023-08-25 17:14:41,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (1/1) ... [2023-08-25 17:14:41,531 INFO L138 Inliner]: procedures = 262, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-08-25 17:14:41,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 17:14:41,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 17:14:41,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 17:14:41,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 17:14:41,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (1/1) ... [2023-08-25 17:14:41,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (1/1) ... [2023-08-25 17:14:41,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (1/1) ... [2023-08-25 17:14:41,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (1/1) ... [2023-08-25 17:14:41,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (1/1) ... [2023-08-25 17:14:41,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (1/1) ... [2023-08-25 17:14:41,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (1/1) ... [2023-08-25 17:14:41,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (1/1) ... [2023-08-25 17:14:41,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 17:14:41,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 17:14:41,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 17:14:41,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 17:14:41,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (1/1) ... [2023-08-25 17:14:41,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:14:41,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:14:41,607 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) [2023-08-25 17:14:41,627 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 [2023-08-25 17:14:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 17:14:41,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 17:14:41,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 17:14:41,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 17:14:41,640 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 17:14:41,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 17:14:41,641 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 17:14:41,641 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 17:14:41,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 17:14:41,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 17:14:41,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 17:14:41,642 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 17:14:41,765 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 17:14:41,767 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 17:14:41,926 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 17:14:41,931 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 17:14:41,931 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-25 17:14:41,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:14:41 BoogieIcfgContainer [2023-08-25 17:14:41,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 17:14:41,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 17:14:41,935 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 17:14:41,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 17:14:41,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:14:40" (1/3) ... [2023-08-25 17:14:41,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4d9b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:14:41, skipping insertion in model container [2023-08-25 17:14:41,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:14:41" (2/3) ... [2023-08-25 17:14:41,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4d9b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:14:41, skipping insertion in model container [2023-08-25 17:14:41,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:14:41" (3/3) ... [2023-08-25 17:14:41,939 INFO L112 eAbstractionObserver]: Analyzing ICFG 03-practical_07-nonterm.i [2023-08-25 17:14:41,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 17:14:41,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-25 17:14:41,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 17:14:42,027 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 17:14:42,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 162 flow [2023-08-25 17:14:42,099 INFO L124 PetriNetUnfolderBase]: 2/76 cut-off events. [2023-08-25 17:14:42,099 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 17:14:42,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 76 events. 2/76 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-08-25 17:14:42,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 77 transitions, 162 flow [2023-08-25 17:14:42,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 70 transitions, 146 flow [2023-08-25 17:14:42,109 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:14:42,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 70 transitions, 146 flow [2023-08-25 17:14:42,119 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 70 transitions, 146 flow [2023-08-25 17:14:42,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 146 flow [2023-08-25 17:14:42,159 INFO L124 PetriNetUnfolderBase]: 2/70 cut-off events. [2023-08-25 17:14:42,159 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 17:14:42,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 70 events. 2/70 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-08-25 17:14:42,161 INFO L119 LiptonReduction]: Number of co-enabled transitions 798 [2023-08-25 17:14:43,938 INFO L134 LiptonReduction]: Checked pairs total: 2580 [2023-08-25 17:14:43,938 INFO L136 LiptonReduction]: Total number of compositions: 48 [2023-08-25 17:14:43,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 17:14:43,958 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=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@411a321a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:14:43,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-25 17:14:43,961 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:14:43,961 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-25 17:14:43,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:14:43,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:14:43,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 17:14:43,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:14:43,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:14:43,966 INFO L85 PathProgramCache]: Analyzing trace with hash 248533150, now seen corresponding path program 1 times [2023-08-25 17:14:43,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:14:43,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188088932] [2023-08-25 17:14:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:14:43,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:14:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:14:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:14:44,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:14:44,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188088932] [2023-08-25 17:14:44,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188088932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:14:44,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:14:44,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 17:14:44,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49979468] [2023-08-25 17:14:44,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:14:44,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:14:44,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:14:44,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:14:44,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:14:44,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 125 [2023-08-25 17:14:44,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:14:44,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 125 [2023-08-25 17:14:44,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:14:44,316 INFO L124 PetriNetUnfolderBase]: 78/181 cut-off events. [2023-08-25 17:14:44,317 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:14:44,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 181 events. 78/181 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 712 event pairs, 33 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 344. Up to 110 conditions per place. [2023-08-25 17:14:44,322 INFO L140 encePairwiseOnDemand]: 115/125 looper letters, 28 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2023-08-25 17:14:44,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 36 transitions, 143 flow [2023-08-25 17:14:44,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:14:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:14:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2023-08-25 17:14:44,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706666666666667 [2023-08-25 17:14:44,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2023-08-25 17:14:44,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2023-08-25 17:14:44,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:14:44,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2023-08-25 17:14:44,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,350 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 56 flow. Second operand 3 states and 214 transitions. [2023-08-25 17:14:44,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 36 transitions, 143 flow [2023-08-25 17:14:44,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 36 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:14:44,354 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 96 flow [2023-08-25 17:14:44,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-08-25 17:14:44,358 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-25 17:14:44,358 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 96 flow [2023-08-25 17:14:44,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:14:44,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:14:44,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 17:14:44,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:14:44,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:14:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash -472348082, now seen corresponding path program 1 times [2023-08-25 17:14:44,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:14:44,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772843760] [2023-08-25 17:14:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:14:44,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:14:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:14:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:14:44,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:14:44,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772843760] [2023-08-25 17:14:44,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772843760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:14:44,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:14:44,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 17:14:44,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081209047] [2023-08-25 17:14:44,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:14:44,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:14:44,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:14:44,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:14:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:14:44,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 125 [2023-08-25 17:14:44,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:14:44,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 125 [2023-08-25 17:14:44,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:14:44,535 INFO L124 PetriNetUnfolderBase]: 82/188 cut-off events. [2023-08-25 17:14:44,535 INFO L125 PetriNetUnfolderBase]: For 103/105 co-relation queries the response was YES. [2023-08-25 17:14:44,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 188 events. 82/188 cut-off events. For 103/105 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 718 event pairs, 30 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 468. Up to 137 conditions per place. [2023-08-25 17:14:44,537 INFO L140 encePairwiseOnDemand]: 119/125 looper letters, 28 selfloop transitions, 7 changer transitions 2/39 dead transitions. [2023-08-25 17:14:44,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 39 transitions, 212 flow [2023-08-25 17:14:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:14:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:14:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2023-08-25 17:14:44,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528 [2023-08-25 17:14:44,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2023-08-25 17:14:44,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2023-08-25 17:14:44,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:14:44,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2023-08-25 17:14:44,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,543 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 96 flow. Second operand 3 states and 198 transitions. [2023-08-25 17:14:44,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 39 transitions, 212 flow [2023-08-25 17:14:44,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 39 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 17:14:44,545 INFO L231 Difference]: Finished difference. Result has 29 places, 32 transitions, 140 flow [2023-08-25 17:14:44,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=29, PETRI_TRANSITIONS=32} [2023-08-25 17:14:44,546 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-25 17:14:44,546 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 32 transitions, 140 flow [2023-08-25 17:14:44,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:14:44,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:14:44,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 17:14:44,547 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:14:44,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:14:44,548 INFO L85 PathProgramCache]: Analyzing trace with hash 259383168, now seen corresponding path program 1 times [2023-08-25 17:14:44,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:14:44,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621081001] [2023-08-25 17:14:44,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:14:44,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:14:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:14:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:14:44,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:14:44,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621081001] [2023-08-25 17:14:44,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621081001] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:14:44,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:14:44,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 17:14:44,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504756902] [2023-08-25 17:14:44,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:14:44,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:14:44,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:14:44,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:14:44,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:14:44,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 125 [2023-08-25 17:14:44,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 32 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:14:44,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 125 [2023-08-25 17:14:44,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:14:44,647 INFO L124 PetriNetUnfolderBase]: 77/180 cut-off events. [2023-08-25 17:14:44,647 INFO L125 PetriNetUnfolderBase]: For 142/144 co-relation queries the response was YES. [2023-08-25 17:14:44,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 180 events. 77/180 cut-off events. For 142/144 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 680 event pairs, 26 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 513. Up to 147 conditions per place. [2023-08-25 17:14:44,649 INFO L140 encePairwiseOnDemand]: 120/125 looper letters, 25 selfloop transitions, 7 changer transitions 10/44 dead transitions. [2023-08-25 17:14:44,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 278 flow [2023-08-25 17:14:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:14:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:14:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2023-08-25 17:14:44,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-08-25 17:14:44,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 195 transitions. [2023-08-25 17:14:44,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 195 transitions. [2023-08-25 17:14:44,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:14:44,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 195 transitions. [2023-08-25 17:14:44,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,654 INFO L175 Difference]: Start difference. First operand has 29 places, 32 transitions, 140 flow. Second operand 3 states and 195 transitions. [2023-08-25 17:14:44,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 278 flow [2023-08-25 17:14:44,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 17:14:44,657 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 149 flow [2023-08-25 17:14:44,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2023-08-25 17:14:44,658 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2023-08-25 17:14:44,658 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 149 flow [2023-08-25 17:14:44,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:14:44,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:14:44,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:14:44,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 17:14:44,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:14:44,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:14:44,660 INFO L85 PathProgramCache]: Analyzing trace with hash 303408517, now seen corresponding path program 1 times [2023-08-25 17:14:44,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:14:44,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740200406] [2023-08-25 17:14:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:14:44,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:14:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:14:44,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:14:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:14:44,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:14:44,724 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:14:44,725 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 9 remaining) [2023-08-25 17:14:44,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-08-25 17:14:44,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-08-25 17:14:44,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-08-25 17:14:44,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-08-25 17:14:44,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-08-25 17:14:44,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-08-25 17:14:44,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-08-25 17:14:44,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-08-25 17:14:44,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 17:14:44,728 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-25 17:14:44,733 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 17:14:44,734 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 17:14:44,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 05:14:44 BasicIcfg [2023-08-25 17:14:44,761 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 17:14:44,763 INFO L158 Benchmark]: Toolchain (without parser) took 3841.99ms. Allocated memory was 343.9MB in the beginning and 429.9MB in the end (delta: 86.0MB). Free memory was 318.9MB in the beginning and 328.1MB in the end (delta: -9.3MB). Peak memory consumption was 76.2MB. Max. memory is 16.0GB. [2023-08-25 17:14:44,764 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 343.9MB. Free memory is still 321.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 17:14:44,764 INFO L158 Benchmark]: CACSL2BoogieTranslator took 560.51ms. Allocated memory is still 343.9MB. Free memory was 318.3MB in the beginning and 291.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-25 17:14:44,764 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.92ms. Allocated memory is still 343.9MB. Free memory was 291.1MB in the beginning and 289.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 17:14:44,765 INFO L158 Benchmark]: Boogie Preprocessor took 20.88ms. Allocated memory is still 343.9MB. Free memory was 289.0MB in the beginning and 287.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 17:14:44,769 INFO L158 Benchmark]: RCFGBuilder took 367.39ms. Allocated memory is still 343.9MB. Free memory was 287.4MB in the beginning and 273.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-25 17:14:44,770 INFO L158 Benchmark]: TraceAbstraction took 2827.05ms. Allocated memory was 343.9MB in the beginning and 429.9MB in the end (delta: 86.0MB). Free memory was 273.3MB in the beginning and 328.1MB in the end (delta: -54.9MB). Peak memory consumption was 32.1MB. Max. memory is 16.0GB. [2023-08-25 17:14:44,774 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 343.9MB. Free memory is still 321.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 560.51ms. Allocated memory is still 343.9MB. Free memory was 318.3MB in the beginning and 291.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.92ms. Allocated memory is still 343.9MB. Free memory was 291.1MB in the beginning and 289.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.88ms. Allocated memory is still 343.9MB. Free memory was 289.0MB in the beginning and 287.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 367.39ms. Allocated memory is still 343.9MB. Free memory was 287.4MB in the beginning and 273.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2827.05ms. Allocated memory was 343.9MB in the beginning and 429.9MB in the end (delta: 86.0MB). Free memory was 273.3MB in the beginning and 328.1MB in the end (delta: -54.9MB). Peak memory consumption was 32.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 72 PlacesBefore, 28 PlacesAfterwards, 70 TransitionsBefore, 25 TransitionsAfterwards, 798 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 48 TotalNumberOfCompositions, 2580 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 982, independent: 805, independent conditional: 0, independent unconditional: 805, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 380, independent: 354, independent conditional: 0, independent unconditional: 354, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 982, independent: 451, independent conditional: 0, independent unconditional: 451, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 380, unknown conditional: 0, unknown unconditional: 380] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 931]: Data race detected Data race detected The following path leads to a data race: [L917] 0 int myglobal; [L918] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L919] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L928] 0 pthread_t id; [L929] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, id={3:0}, mutex1={1:0}, mutex2={2:0}, myglobal=0, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L922] EXPR 1 myglobal+1 VAL [arg={0:0}, arg={0:0}, mutex1={1:0}, mutex2={2:0}, myglobal=0] [L922] 1 myglobal=myglobal+1 VAL [arg={0:0}, arg={0:0}, mutex1={1:0}, mutex2={2:0}, myglobal=1] [L931] 0 myglobal+1 VAL [arg={0:0}, arg={0:0}, id={3:0}, mutex1={1:0}, mutex2={2:0}, myglobal=1] [L931] 0 myglobal+1 VAL [arg={0:0}, arg={0:0}, id={3:0}, mutex1={1:0}, mutex2={2:0}, myglobal=1, myglobal=myglobal+1=25] Now there is a data race on ~myglobal~0 between C: myglobal=myglobal+1 [922] and C: myglobal+1 [931] - UnprovableResult [Line: 931]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 933]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 934]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 929]: 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: 922]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 922]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 9 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: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 16 mSDtfsCounter, 121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=3, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2023-08-25 17:14:44,817 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...