/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 PROGRAM_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/04-mutex_24-sound_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 06:57:05,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 06:57:05,991 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 [2023-08-26 06:57:05,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 06:57:05,995 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 06:57:06,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 06:57:06,026 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 06:57:06,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 06:57:06,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 06:57:06,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 06:57:06,031 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 06:57:06,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 06:57:06,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 06:57:06,032 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 06:57:06,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 06:57:06,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 06:57:06,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 06:57:06,033 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 06:57:06,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 06:57:06,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 06:57:06,034 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 06:57:06,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 06:57:06,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 06:57:06,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 06:57:06,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 06:57:06,037 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 06:57:06,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 06:57:06,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:57:06,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 06:57:06,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 06:57:06,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 06:57:06,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 06:57:06,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 06:57:06,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 06:57:06,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 06:57:06,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 06:57:06,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 06:57:06,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 06:57:06,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 06:57:06,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 06:57:06,381 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 06:57:06,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_24-sound_lock.i [2023-08-26 06:57:07,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 06:57:07,895 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 06:57:07,895 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_24-sound_lock.i [2023-08-26 06:57:07,916 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ff7d3d2/a4f2937a13f04a3389c47bbe4f171432/FLAG96a0012c5 [2023-08-26 06:57:07,927 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ff7d3d2/a4f2937a13f04a3389c47bbe4f171432 [2023-08-26 06:57:07,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 06:57:07,931 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 06:57:07,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 06:57:07,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 06:57:07,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 06:57:07,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:57:07" (1/1) ... [2023-08-26 06:57:07,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a96479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:07, skipping insertion in model container [2023-08-26 06:57:07,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:57:07" (1/1) ... [2023-08-26 06:57:07,977 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 06:57:08,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:57:08,365 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 06:57:08,394 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-26 06:57:08,396 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-26 06:57:08,402 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [737] [2023-08-26 06:57:08,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:57:08,491 INFO L206 MainTranslator]: Completed translation [2023-08-26 06:57:08,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08 WrapperNode [2023-08-26 06:57:08,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 06:57:08,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 06:57:08,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 06:57:08,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 06:57:08,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (1/1) ... [2023-08-26 06:57:08,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (1/1) ... [2023-08-26 06:57:08,559 INFO L138 Inliner]: procedures = 263, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2023-08-26 06:57:08,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 06:57:08,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 06:57:08,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 06:57:08,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 06:57:08,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (1/1) ... [2023-08-26 06:57:08,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (1/1) ... [2023-08-26 06:57:08,579 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (1/1) ... [2023-08-26 06:57:08,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (1/1) ... [2023-08-26 06:57:08,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (1/1) ... [2023-08-26 06:57:08,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (1/1) ... [2023-08-26 06:57:08,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (1/1) ... [2023-08-26 06:57:08,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (1/1) ... [2023-08-26 06:57:08,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 06:57:08,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 06:57:08,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 06:57:08,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 06:57:08,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (1/1) ... [2023-08-26 06:57:08,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:57:08,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:57:08,630 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) [2023-08-26 06:57:08,637 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 [2023-08-26 06:57:08,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 06:57:08,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 06:57:08,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 06:57:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 06:57:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 06:57:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 06:57:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 06:57:08,664 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 06:57:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 06:57:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 06:57:08,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 06:57:08,666 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 06:57:08,824 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 06:57:08,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 06:57:08,947 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 06:57:08,953 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 06:57:08,953 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 06:57:08,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:57:08 BoogieIcfgContainer [2023-08-26 06:57:08,955 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 06:57:08,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 06:57:08,957 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 06:57:08,960 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 06:57:08,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:57:07" (1/3) ... [2023-08-26 06:57:08,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a495dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:57:08, skipping insertion in model container [2023-08-26 06:57:08,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:57:08" (2/3) ... [2023-08-26 06:57:08,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a495dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:57:08, skipping insertion in model container [2023-08-26 06:57:08,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:57:08" (3/3) ... [2023-08-26 06:57:08,962 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_24-sound_lock.i [2023-08-26 06:57:08,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 06:57:08,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 06:57:08,992 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 06:57:09,062 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 06:57:09,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 77 transitions, 162 flow [2023-08-26 06:57:09,163 INFO L124 PetriNetUnfolderBase]: 1/76 cut-off events. [2023-08-26 06:57:09,163 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 06:57:09,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 76 events. 1/76 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2023-08-26 06:57:09,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 77 transitions, 162 flow [2023-08-26 06:57:09,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 69 transitions, 141 flow [2023-08-26 06:57:09,176 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 06:57:09,190 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 69 transitions, 141 flow [2023-08-26 06:57:09,194 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 69 transitions, 141 flow [2023-08-26 06:57:09,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 69 transitions, 141 flow [2023-08-26 06:57:09,220 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-08-26 06:57:09,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:57:09,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2023-08-26 06:57:09,222 INFO L119 LiptonReduction]: Number of co-enabled transitions 630 [2023-08-26 06:57:12,058 INFO L134 LiptonReduction]: Checked pairs total: 2645 [2023-08-26 06:57:12,058 INFO L136 LiptonReduction]: Total number of compositions: 53 [2023-08-26 06:57:12,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 06:57:12,075 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;@20a20cb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 06:57:12,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-26 06:57:12,078 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 06:57:12,078 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 06:57:12,078 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:57:12,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:57:12,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 06:57:12,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-08-26 06:57:12,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:57:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash 244584767, now seen corresponding path program 1 times [2023-08-26 06:57:12,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:57:12,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162480096] [2023-08-26 06:57:12,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:57:12,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:57:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:57:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:57:12,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:57:12,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162480096] [2023-08-26 06:57:12,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162480096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:57:12,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:57:12,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:57:12,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385794995] [2023-08-26 06:57:12,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:57:12,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:57:12,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:57:12,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:57:12,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:57:12,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2023-08-26 06:57:12,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:57:12,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2023-08-26 06:57:12,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:57:12,404 INFO L124 PetriNetUnfolderBase]: 88/202 cut-off events. [2023-08-26 06:57:12,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:57:12,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 202 events. 88/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 804 event pairs, 37 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 400. Up to 117 conditions per place. [2023-08-26 06:57:12,407 INFO L140 encePairwiseOnDemand]: 121/130 looper letters, 30 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2023-08-26 06:57:12,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 36 transitions, 147 flow [2023-08-26 06:57:12,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:57:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:57:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-26 06:57:12,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5871794871794872 [2023-08-26 06:57:12,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-26 06:57:12,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-26 06:57:12,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:57:12,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-26 06:57:12,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,437 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 45 flow. Second operand 3 states and 229 transitions. [2023-08-26 06:57:12,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 36 transitions, 147 flow [2023-08-26 06:57:12,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 36 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:57:12,441 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 94 flow [2023-08-26 06:57:12,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-08-26 06:57:12,445 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-26 06:57:12,445 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 94 flow [2023-08-26 06:57:12,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:57:12,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:57:12,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 06:57:12,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-08-26 06:57:12,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:57:12,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1580540783, now seen corresponding path program 1 times [2023-08-26 06:57:12,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:57:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607240553] [2023-08-26 06:57:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:57:12,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:57:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:57:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:57:12,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:57:12,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607240553] [2023-08-26 06:57:12,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607240553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:57:12,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:57:12,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:57:12,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777016322] [2023-08-26 06:57:12,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:57:12,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:57:12,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:57:12,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:57:12,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:57:12,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 130 [2023-08-26 06:57:12,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:57:12,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 130 [2023-08-26 06:57:12,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:57:12,600 INFO L124 PetriNetUnfolderBase]: 93/214 cut-off events. [2023-08-26 06:57:12,600 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2023-08-26 06:57:12,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 214 events. 93/214 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 843 event pairs, 45 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 539. Up to 166 conditions per place. [2023-08-26 06:57:12,603 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 30 selfloop transitions, 7 changer transitions 2/39 dead transitions. [2023-08-26 06:57:12,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 39 transitions, 216 flow [2023-08-26 06:57:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:57:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:57:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2023-08-26 06:57:12,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2023-08-26 06:57:12,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2023-08-26 06:57:12,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2023-08-26 06:57:12,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:57:12,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2023-08-26 06:57:12,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,608 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 94 flow. Second operand 3 states and 215 transitions. [2023-08-26 06:57:12,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 39 transitions, 216 flow [2023-08-26 06:57:12,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 39 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:57:12,611 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 138 flow [2023-08-26 06:57:12,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2023-08-26 06:57:12,611 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-26 06:57:12,612 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 138 flow [2023-08-26 06:57:12,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:57:12,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:57:12,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 06:57:12,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-08-26 06:57:12,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:57:12,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2134500117, now seen corresponding path program 1 times [2023-08-26 06:57:12,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:57:12,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832817004] [2023-08-26 06:57:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:57:12,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:57:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:57:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:57:12,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:57:12,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832817004] [2023-08-26 06:57:12,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832817004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:57:12,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:57:12,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:57:12,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372169834] [2023-08-26 06:57:12,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:57:12,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:57:12,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:57:12,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:57:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:57:12,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 130 [2023-08-26 06:57:12,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:57:12,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 130 [2023-08-26 06:57:12,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:57:12,755 INFO L124 PetriNetUnfolderBase]: 87/203 cut-off events. [2023-08-26 06:57:12,756 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-08-26 06:57:12,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 203 events. 87/203 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 778 event pairs, 41 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 591. Up to 181 conditions per place. [2023-08-26 06:57:12,757 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 27 selfloop transitions, 7 changer transitions 9/43 dead transitions. [2023-08-26 06:57:12,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 43 transitions, 278 flow [2023-08-26 06:57:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:57:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:57:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2023-08-26 06:57:12,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541025641025641 [2023-08-26 06:57:12,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2023-08-26 06:57:12,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2023-08-26 06:57:12,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:57:12,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2023-08-26 06:57:12,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,763 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 138 flow. Second operand 3 states and 211 transitions. [2023-08-26 06:57:12,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 43 transitions, 278 flow [2023-08-26 06:57:12,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 43 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:57:12,765 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 147 flow [2023-08-26 06:57:12,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2023-08-26 06:57:12,766 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-08-26 06:57:12,767 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 147 flow [2023-08-26 06:57:12,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:57:12,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:57:12,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:57:12,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 06:57:12,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-08-26 06:57:12,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:57:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash -92181228, now seen corresponding path program 1 times [2023-08-26 06:57:12,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:57:12,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272168822] [2023-08-26 06:57:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:57:12,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:57:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 06:57:12,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 06:57:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 06:57:12,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 06:57:12,816 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 06:57:12,817 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 8 remaining) [2023-08-26 06:57:12,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-08-26 06:57:12,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-08-26 06:57:12,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2023-08-26 06:57:12,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-08-26 06:57:12,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-08-26 06:57:12,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-08-26 06:57:12,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-08-26 06:57:12,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 06:57:12,820 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-26 06:57:12,825 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 06:57:12,825 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 06:57:12,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:57:12 BasicIcfg [2023-08-26 06:57:12,845 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 06:57:12,846 INFO L158 Benchmark]: Toolchain (without parser) took 4915.38ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 356.5MB in the beginning and 324.0MB in the end (delta: 32.5MB). Peak memory consumption was 111.9MB. Max. memory is 16.0GB. [2023-08-26 06:57:12,847 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 381.7MB. Free memory was 359.0MB in the beginning and 358.9MB in the end (delta: 74.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 06:57:12,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.11ms. Allocated memory is still 381.7MB. Free memory was 356.5MB in the beginning and 329.1MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 06:57:12,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.23ms. Allocated memory is still 381.7MB. Free memory was 329.1MB in the beginning and 326.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 06:57:12,848 INFO L158 Benchmark]: Boogie Preprocessor took 41.86ms. Allocated memory is still 381.7MB. Free memory was 326.8MB in the beginning and 325.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 06:57:12,848 INFO L158 Benchmark]: RCFGBuilder took 352.13ms. Allocated memory is still 381.7MB. Free memory was 325.1MB in the beginning and 311.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 06:57:12,848 INFO L158 Benchmark]: TraceAbstraction took 3888.61ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 310.7MB in the beginning and 324.0MB in the end (delta: -13.3MB). Peak memory consumption was 65.7MB. Max. memory is 16.0GB. [2023-08-26 06:57:12,850 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 381.7MB. Free memory was 359.0MB in the beginning and 358.9MB in the end (delta: 74.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 562.11ms. Allocated memory is still 381.7MB. Free memory was 356.5MB in the beginning and 329.1MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 65.23ms. Allocated memory is still 381.7MB. Free memory was 329.1MB in the beginning and 326.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 41.86ms. Allocated memory is still 381.7MB. Free memory was 326.8MB in the beginning and 325.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 352.13ms. Allocated memory is still 381.7MB. Free memory was 325.1MB in the beginning and 311.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3888.61ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 310.7MB in the beginning and 324.0MB in the end (delta: -13.3MB). Peak memory consumption was 65.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 737]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [737] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 72 PlacesBefore, 25 PlacesAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 630 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 53 TotalNumberOfCompositions, 2645 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 950, independent: 729, independent conditional: 0, independent unconditional: 729, dependent: 221, dependent conditional: 0, dependent unconditional: 221, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 341, independent: 308, independent conditional: 0, independent unconditional: 308, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 950, independent: 421, independent conditional: 0, independent unconditional: 421, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 341, unknown conditional: 0, unknown unconditional: 341] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 934]: Data race detected Data race detected The following path leads to a data race: [L918] 0 int myglobal; [L919] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L920] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L928] 0 int i = __VERIFIER_nondet_int(); [L929] 0 pthread_t id; [L930] 0 pthread_mutex_t *m = &mutex1; [L931] COND TRUE 0 \read(i) [L931] 0 m = &mutex2 [L932] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, i=-2, id={3:0}, m={2:0}, mutex1={1:0}, mutex2={2:0}, myglobal=0, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L923] EXPR 1 myglobal+1 VAL [arg={0:0}, arg={0:0}, mutex1={1:0}, mutex2={2:0}, myglobal=0] [L934] 0 myglobal+1 VAL [arg={0:0}, arg={0:0}, i=-2, id={3:0}, m={2:0}, mutex1={1:0}, mutex2={2:0}, myglobal=0] [L923] 1 myglobal=myglobal+1 VAL [arg={0:0}, arg={0:0}, mutex1={1:0}, mutex2={2:0}, myglobal=1, myglobal=myglobal+1=25] [L934] 0 myglobal+1 VAL [arg={0:0}, arg={0:0}, i=-2, id={3:0}, m={2:0}, 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 [923] and C: myglobal+1 [934] - 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: 936]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 932]: 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: 923]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 923]: 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, 94 locations, 8 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: 3.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 114 IncrementalHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 29 mSDtfsCounter, 114 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=147occurred 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! [2023-08-26 06:57:12,883 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...