/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 -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_pos.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 12:31:03,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 12:31:03,615 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 [2023-08-24 12:31:03,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 12:31:03,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 12:31:03,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 12:31:03,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 12:31:03,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 12:31:03,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 12:31:03,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 12:31:03,657 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 12:31:03,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 12:31:03,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 12:31:03,657 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 12:31:03,658 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 12:31:03,658 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 12:31:03,658 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 12:31:03,658 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 12:31:03,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 12:31:03,659 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 12:31:03,659 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 12:31:03,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 12:31:03,663 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 12:31:03,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 12:31:03,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 12:31:03,666 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 12:31:03,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 12:31:03,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:31:03,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 12:31:03,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 12:31:03,667 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 12:31:03,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 12:31:03,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 12:31:03,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 12:31:03,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 12:31:03,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 12:31:03,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 12:31:03,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 12:31:03,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 12:31:03,948 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 12:31:03,949 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 12:31:03,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_pos.i [2023-08-24 12:31:05,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 12:31:05,247 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 12:31:05,247 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_pos.i [2023-08-24 12:31:05,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2323f7929/a17409ed2f0f4ad1844f4c1a0a0473af/FLAG13054e51e [2023-08-24 12:31:05,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2323f7929/a17409ed2f0f4ad1844f4c1a0a0473af [2023-08-24 12:31:05,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 12:31:05,281 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 12:31:05,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 12:31:05,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 12:31:05,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 12:31:05,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274b19be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05, skipping insertion in model container [2023-08-24 12:31:05,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,327 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 12:31:05,443 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_pos.i[1097,1110] [2023-08-24 12:31:05,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:31:05,558 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 12:31:05,566 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_pos.i[1097,1110] [2023-08-24 12:31:05,571 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-24 12:31:05,573 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-24 12:31:05,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:31:05,614 INFO L206 MainTranslator]: Completed translation [2023-08-24 12:31:05,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05 WrapperNode [2023-08-24 12:31:05,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 12:31:05,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 12:31:05,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 12:31:05,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 12:31:05,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,643 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-08-24 12:31:05,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 12:31:05,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 12:31:05,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 12:31:05,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 12:31:05,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,654 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 12:31:05,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 12:31:05,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 12:31:05,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 12:31:05,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (1/1) ... [2023-08-24 12:31:05,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:31:05,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 12:31:05,724 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) [2023-08-24 12:31:05,737 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 [2023-08-24 12:31:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 12:31:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 12:31:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 12:31:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 12:31:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 12:31:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 12:31:05,754 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 12:31:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 12:31:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 12:31:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 12:31:05,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 12:31:05,756 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 12:31:05,851 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 12:31:05,852 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 12:31:05,941 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 12:31:05,945 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 12:31:05,945 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 12:31:05,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:31:05 BoogieIcfgContainer [2023-08-24 12:31:05,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 12:31:05,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 12:31:05,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 12:31:05,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 12:31:05,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:31:05" (1/3) ... [2023-08-24 12:31:05,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37eca36b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:31:05, skipping insertion in model container [2023-08-24 12:31:05,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:31:05" (2/3) ... [2023-08-24 12:31:05,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37eca36b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:31:05, skipping insertion in model container [2023-08-24 12:31:05,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:31:05" (3/3) ... [2023-08-24 12:31:05,951 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_1_pos.i [2023-08-24 12:31:05,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 12:31:05,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 12:31:05,962 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 12:31:06,002 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 12:31:06,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 59 transitions, 126 flow [2023-08-24 12:31:06,065 INFO L124 PetriNetUnfolderBase]: 2/58 cut-off events. [2023-08-24 12:31:06,065 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 12:31:06,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 2/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-08-24 12:31:06,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 59 transitions, 126 flow [2023-08-24 12:31:06,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 44 transitions, 91 flow [2023-08-24 12:31:06,075 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 12:31:06,083 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 44 transitions, 91 flow [2023-08-24 12:31:06,088 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 44 transitions, 91 flow [2023-08-24 12:31:06,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 91 flow [2023-08-24 12:31:06,107 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2023-08-24 12:31:06,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:31:06,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-08-24 12:31:06,108 INFO L119 LiptonReduction]: Number of co-enabled transitions 192 [2023-08-24 12:31:07,642 INFO L134 LiptonReduction]: Checked pairs total: 188 [2023-08-24 12:31:07,642 INFO L136 LiptonReduction]: Total number of compositions: 42 [2023-08-24 12:31:07,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 12:31:07,656 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;@39e91f0b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 12:31:07,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 12:31:07,677 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 12:31:07,678 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-24 12:31:07,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:31:07,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:31:07,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-24 12:31:07,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 12:31:07,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:31:07,682 INFO L85 PathProgramCache]: Analyzing trace with hash 221098, now seen corresponding path program 1 times [2023-08-24 12:31:07,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:31:07,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218458597] [2023-08-24 12:31:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:31:07,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:31:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 12:31:07,785 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 12:31:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 12:31:07,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 12:31:07,811 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 12:31:07,811 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 12:31:07,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 12:31:07,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-24 12:31:07,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 12:31:07,813 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 12:31:07,829 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 12:31:07,829 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 12:31:07,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 12:31:07 BasicIcfg [2023-08-24 12:31:07,841 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 12:31:07,842 INFO L158 Benchmark]: Toolchain (without parser) took 2561.01ms. Allocated memory is still 369.1MB. Free memory was 324.0MB in the beginning and 344.4MB in the end (delta: -20.5MB). Peak memory consumption was 197.8MB. Max. memory is 16.0GB. [2023-08-24 12:31:07,842 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 369.1MB. Free memory was 346.8MB in the beginning and 346.7MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 12:31:07,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.84ms. Allocated memory is still 369.1MB. Free memory was 324.0MB in the beginning and 305.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 12:31:07,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.81ms. Allocated memory is still 369.1MB. Free memory was 305.1MB in the beginning and 303.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 12:31:07,843 INFO L158 Benchmark]: Boogie Preprocessor took 24.66ms. Allocated memory is still 369.1MB. Free memory was 303.0MB in the beginning and 300.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 12:31:07,843 INFO L158 Benchmark]: RCFGBuilder took 276.56ms. Allocated memory is still 369.1MB. Free memory was 300.9MB in the beginning and 288.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 12:31:07,844 INFO L158 Benchmark]: TraceAbstraction took 1893.54ms. Allocated memory is still 369.1MB. Free memory was 287.3MB in the beginning and 344.4MB in the end (delta: -57.2MB). Peak memory consumption was 160.0MB. Max. memory is 16.0GB. [2023-08-24 12:31:07,845 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 369.1MB. Free memory was 346.8MB in the beginning and 346.7MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 331.84ms. Allocated memory is still 369.1MB. Free memory was 324.0MB in the beginning and 305.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.81ms. Allocated memory is still 369.1MB. Free memory was 305.1MB in the beginning and 303.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.66ms. Allocated memory is still 369.1MB. Free memory was 303.0MB in the beginning and 300.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 276.56ms. Allocated memory is still 369.1MB. Free memory was 300.9MB in the beginning and 288.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 1893.54ms. Allocated memory is still 369.1MB. Free memory was 287.3MB in the beginning and 344.4MB in the end (delta: -57.2MB). Peak memory consumption was 160.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 47 PlacesBefore, 9 PlacesAfterwards, 44 TransitionsBefore, 5 TransitionsAfterwards, 192 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 42 TotalNumberOfCompositions, 188 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 174, independent: 159, independent conditional: 0, independent unconditional: 159, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 112, independent: 102, independent conditional: 0, independent unconditional: 102, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 174, independent: 57, independent conditional: 0, independent unconditional: 57, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 112, unknown conditional: 0, unknown unconditional: 112] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={5:0}, mutex1={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=0] [L685] 1 int t = __VERIFIER_nondet_int(); [L687] COND TRUE 1 t == 42 [L688] 1 glob1 = 1 [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(t == 0) [L19] COND TRUE 1 !(cond) [L19] 1 reach_error() VAL [\old(cond)=0, cond=0, glob1=1, mutex1={3:0}] - UnprovableResult [Line: 698]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 81 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-24 12:31:07,857 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...